Wolfram Koeller
Professor
Department of Plant Pathology

Address, Phone, Fax

E-Mail: wk11@cornell.edu

Ph.D. 1979 Biochemistry
Philipps University, Marburg, Germany
Diploma 1976 Chemistry
Philipps University, Marburg, Germany

Division of Effort
Research - 100%, Fungicide resistance, ecology of adaptive population responses

Complete CV – html | pdf

Academic Ranks:

Professor 2000 – present Cornell University
Associate Professor 1992 - 2000 Cornell University
Assistant Professor 1986 - 1992 Cornell University
Senior Research Scientist 1982 - 1986 Bayer, Monheim, Germany
Visiting Research Fellow 1980 – 1982 Washington State University,
Pullman


Professional Experience

2000 - present Professor of Plant Pathology, Cornell University
1992 - 2000 Associate Professor of Plant Pathology, Cornell University
1986 – 1992 Assistant Professor of Plant Pathology, Cornell University
1982 - 1986 Senior Research Scientist (Fungicide Biochemistry and Resistance)
Bayer AG - Pesticide Division, Leverkusen, Germany
1980 - 1981 Visiting Fellow
Washington State University, Pullman, WA
1979 Research Associate
Philipps-University Marburg, Germany
1976 - 1979 Research Assistant
Philipps-University Marburg, Germany
1974 - 1976 Teaching Assistant
Philipps-University Marburg, Germany


Major Professional Assignments, Honors, and Awards

2002 Lee M. Hutchins Award of The American Phytopathological
Society.

1991 - 1997 Associate Editor, Phytopathology.

1980 - 1982 Postdoctoral Fellow of the German Research Foundation (DFG)



PROGRAM OVERVIEW AND OBJECTIVES

The future control of plant diseases relies on four general avenues: chemical disease control agents with minimal effects on non-target organisms, breeding of disease-resistant cultivars including transgenics, development of effective biocontrol agents and employment of cultural practices minimizing the severity of epidemics. The effectiveness of these tactics is continuously challenged by adaptive responses of pathogen populations toward their changing environments.
The long-term goal of my research on Resistance to Site-specific Antifungal Agents is to contribute to the sustained effectiveness of plant disease management. Primary focus is on current and future site-specific fungicides. Our program on fungicide resistance pursues a holistic approach: results from population and molecular studies are employed in the development of resistance management strategies. Our primary model pathogen is Venturia inaequalis , a typical ascomycete causing apple scab. More recently, we have added Magnaporthe grisea and Colletotrichum graminicola to our arsenal of pathogen models.
Two major questions govern our applied part of the program: Can older site-specific fungicides with previous histories of resistance still be integrated into effective disease management programs, and how can the relative risk of new site-specific fungicides be predicted in order to slow the process of adaptive population responses down ? The fundamental research thrust of the program is to better understand the mechanisms by which populations of the same species adapt to their continuously changing environments. The development of fungicide resistance provides a model to study and better understand the adaptive evolution of population structures.
A second thrust is to explore, whether specific targets of chemical interference with the infection of plants would be less prone to adaptive population responses leading to resistance. My program has been continuously engaged in this question, with fungal cutinases serving as a model. Cutinases as secreted enzymes are involved in the penetration of host surfaces by attacking plant pathogens. Highly specific inhibitors of cutinases are expected to act as 'antipenetrants' protecting plants from fungal attack at the initial stage of host-pathogen interactions. The cutinase target is attractive, because inhibitors would interfere with a highly specialized step in plant infection rather than with fungal growth and reproduction. Our work on cutinases stands as an example for combining conceptual advances in the understanding of host-pathogen interactions with practical applications.



REPRESENTATIVE ACADEMIC RESPONSIBILITIES


Current Division of Effort

Research 100%


Primary Departmental Program Area:

Resistance to anti-fungal agents
· Mechanisms of resistance to fungicides
· Management and risk assessment of resistance to fungicides
· Modes of action of fungicides
· Characterization of novel target sites for future fungicides


Post-Doctoral Associates

2001 – 2002 Cruz Avila-Adame Ph. D. Plant Pathology
Cornell University
1998 – 2000 Tie Bang Wang Ph. D. Plant Genetics
Iwate University, Morioka, Japan
1995 - 1998 Desen Zheng Ph. D. Plant Genetics and Breeding
Fujian Agricultural University, China
1995 - 1998 Gilberto Olaya Ph. D. Plant Pathology
Cornell University
1991 - 1993 Chenglin Yao Ph. D. Plant Pathology
Texas A&M
1990 - 1991 Katherine L. Reynolds Ph. D. Plant Pathology
Cornell University
1988 - 1989 Franzine D. Smith Ph. D. Microbiology
University of Massachusetts

Visiting Scientists

1995 - 96 GeHyeong Lee Ph. D. Chemist
Korea Institute of Chemical Technology
1993 Luigi Toti Ph. D. Botany
Eidgenössische Technische Hochschule Zürich
1992 - 93 Maja Bodmer M. S. Plant Pathology
Eidgenössische Forschungsanstalt Wädenswil,
Switzerland
1992 - 93 Urs Hilber Ph. D. Plant Pathology
Universität Basel, Switzerland
1991 - 93 Toshihide Saishoji Kureha Chemical Industry Co.,
Tokyo, Japan



Teaching and Advising Responsibilities:

Courses

1996 - 2001 PP 709: Phytomycology
Lecture and Lab "Chemical Control - Resistance Management”.
1993 - 2001 PP 701: Concepts of Plant Pathology: Organismal Aspects
Lecture "Converting knowledge of pathogenesis into methods of disease
control: Chemical control of plant diseases."
1987 - present PP 900: Dissertation Research



Graduate Field Membership:

Field of Plant Pathology

Graduate Majors

1992 - 2001 Diana M. Parker - Ph. D. - Plant Pathology
"Cutinase Action in Plant Disease Control."
1996 - 2001 Cruz-Avila Adame - Ph. D. - Plant Pathology
"Mechanism of Resistance of Strobilurin Fungicides."
1995 - 1996 Chao-Yun Fan - M.S. - Molecular Plant Pathology
"Role of Serine Hydrolases in Plant Infection."
1987 - 1991 Frances Trail - Ph. D. - Molecular Plant Pathology
"Diversity of Cutinases from Plant Pathogenic Fungi: Evidence for the Role
of Cutinase in Tissue Specificity."

Graduate Minors

1997 – 2000 Frank Wong - Ph. D. - Plant Pathology, Committee Member
(Chair: W. F. Wilcox)
1992 - 1995 Ker-Chung Kou - Ph. D. - Plant Pathology, Committee Member
(Chair: H. C Hoch)

Undergraduate Minors

2001 Andrea Damon – B. S. - Hobart and William Smith College,
Honor Thesis

1988 Jus Wubben – Agric. Engineer – Wageningen Agricultural University,
Netherlands
Honor Thesis



REPRESENTATIVE PROFESSIONAL ACTIVITIES


Professional Societies:

1987 - present American Phytopathological Society

1992 - present American Chemical Society


Editorial Boards:

1991 - 1997 Associate Editor of PHYTOPATHOLOGY


Committee Assignments:

International/National

2003 Organizing Committee Chair of the Symposium “Fungicide
Resistance in North America”.
2003 CAST Symposium: Management of Pest Resistance: Strategies Using Crop Management, Biotechnology and Pesticides
Moderator of Session: Have models helped ?
2003 Steering Committee: CAST Symposium: Management of Pest
Resistance: Strategies Using Crop Management, Biotechnology
and Pesticides
2003 8th International Congress of Plant Pathology, Christchurch, NZ
Organizer of Discussion Session “Chemical Control”
2000 Organizer and Chair of the APS Symposium: “Pathogen
Resistance”
1999 Co-chair of the symposium "Fungicide Resistance" at the 2nd
PanPacific Congress "Pesticide Chemistry" in Hawaii.
1997 - 2000 Founder and chair of the new APS Subject Committee "Pathogen
Resistance"
1998 Invited expert at a hearing of the National Research Council
Working Group "The future of pesticides in the United States"
1996 Organizer of the APS Forum "Fungicide resistance - Organization
of an APS representation"
1996 Workshop Chair (Pest Resistance Management) at the 3rd IPM
Conference, January 7-11, Washington DC.
1994 Co-chair of the symposium "Fungal Hydrolases and Pathogenicity"
at the 5th International Mycological Congress, Vancouver, BC
1994 Discussion Leader of Session "Fungicide Mode of Action"
Eighth International Congress of Pesticide Chemistry, Washington,
DC
1994 - 1995 Program Committee: "ACS Special Conference: Molecular
Genetics and Ecology of Pesticide Resistance"
1994 - 1998 Chair of the Working Group 'Pest Resistance Management', an
ESCOP Subcommittee on Pest Management Strategies
1994 Workshop Chair (IPM and Pesticide Resistance) at the 2nd IPM
Conference, April 19-22, 1994, Las Vegas
1992 - 1994 Secretary of the 'Western Regional Coordinating Committee on
Resistance and Resistance Management to Pesticides in Pests and
Beneficial Organisms' (WRCC 60)
1991 - 1994 Invited member of the working group 'Pest Resistance
Management', an ESCOP Subcommittee on Pest Management
Strategies
1991 - 1997 Associate Editor of PHYTOPATHOLOGY
1990 Invited member of the IOPRM Fungicide Resistance Working
Group
1990 Chair of Session "Mechanisms of Tolerance and Resistance"
Seventh International IUPAC Congress of Pesticide Chemistry,
Hamburg, Germany
1989 Participant of the 'USDA/States NAPIAP Fungicide Resistance
Assessment Panel' (P. L. Sanders, Project Coordinator)
1987 - 2000 Appointed member of the 'Western Regional Coordinating
Committee on Resistance and Resistance Management to Pesticides
in Pests and Beneficial Organisms' (WRCC 60)



University and College

2003 Ad hoc Committee: Promotion to Full Professor with tenure
2001 - present Member of CALS Senate
1998 Member of the search committee "Associate University Librarian
and Director of Mann Library"
1993 Ad hoc Committee: Promotion to Associate Professor with tenure
1992 CALS Strategic Planning -
Member of the Special Committee on Graduate Education
1991 - 1995 Member of the Cornell Faculty Council of Representatives
1990 Long Range Plan for IPM - Leader of Narration Preparation
"The development of safer pesticides"





Geneva Experiment Station

2001 - present Member and Chair of the Faculty “Nominations and Election
Committee”
2001 Chair of ad-hoc Committee: “Space Allocation of Genomics at
Geneva”
1999 Member of the search committee "Geneva Librarian"
1998 - 2001 Member and Chair of the Faculty “Library Committee”
1998 - 2000 Member of the Geneva Genomics Group
1998 - 2000 Faculty advisory committee "Cornell Agriculture and Food
Techology Park”
1998 Member of the search committee "Environmental Saftey and
Health Officer at Geneva"
1996 - 1998 Member of the Faculty "Graduate Student Committee"
1993 Member of the search committee "Geneva Librarian"
1991 Member of the search committee "Assistant Librarian"
1991 - 1993 Member and Chair of the Faculty “Library Committee”



Department

2002 Member of the faculty search committee "Virologist"
position
2001 - present Organizing Committee of the Plant Pathology Seminar Series
1998 - 2000 Member of the faculty search committee "Tree and Small Fruit"
position
1994 Geneva Representative “Task Force Committee on Plant
Pathology Teaching”
1990 - 1993 Geneva Representative Graduate Student Selection Committee
1990 - 1991 Organizer of the Plant Pathology Seminar Series
1987 - 1999 OSHA Representative
1987 - 1999 APS-News Reporter



REPRESENTATIVE PROFESSIONAL CONTRIBUTIONS

Invited presentations (past 10 years)

*Indicates invited Lectures at National and International Scientific Meetings


September 23, 2003 St. Johann BASF Symposium Biosciences: “New
Germany Technologies for Efficient Bioproduct
Development.”
Key note lecture: “Fungicide Resistance:
Challenges and Opportunities”.
*August 13, 2003 Charlotte, NC APS Annual Meeting. Symposium
“ Fungicide Mode of Action and
Deployment for Resistance Management”
Key note lecture “Fungicide Mode of
Action”.
*April 10, 2003 Indianapolis, IN CAST Symposium: Management of Pest
Resistance: Strategies Using Crop Management, Biotechnology and Pesticides
Key note lecture “Pathogens”
Februaury 27, 2003 Lake George, NY Cornell Cooperative Extension, Northeastern
NY Area Fruit Program
“Recent developments in pathogen fungicide
resistance: Example of apple scab”
*February 5, 2003 Christchurch, NZ 8th International Congress of Plant Pathology
“Possible mechanisms in strobilurin resistance”
January 16, 2003 Rochester, NY Cornell Cooperative Extension, Workshop for
Apple Consultants. Discussion leader:
“Status and management of fungicide
resistance”
*December 10, 2002 Grand Rapids, MI Great Lakes Expo – Fruit, Vegetable & Farm
Market
Ken Kropf Memorial Lecture: “Risk of
resistance of apple scab to strobilurins”.
*October 24, 2002 Orlando, FL Pesticides in the Molecular Age
A Satellite to the 11 th North American ISSX
Meeting
“Discovery of Targets for New Fungicides”
October 8, 2002 Geneva, NY Plant Pathology Seminars
“Resistance to fungicides: Any light in the
tunnel ?”

*October 3, 2002, Bromont Quebec NED-APS Meeting
Symposium: Fungicide Resistance Management
“Evolution, development, and management of
fungicide resistance”
Sept. 18-22 2002 Jealott’s Hill, GB Syngenta QoI Technical Workshop
Invited Expert Penal
*July 30, 2002 Milwaukee, WI 2002 Annual APS Meeting
Symposium: Strobilurins and Turfgrass
Diseases “A tricky class of fungicides:
Challenges for in vitro fungicide sensitivity
testing.”
May 8, 2002 New Brunswick, Syngenta/Rutgers Strobilurin (QoI) Resistance
NJ Workshop
“Experience with Fungicide Resistance in
Agricultural Crops”
April 10, 2002 Grand Rapids, MI Bayer Workshop for Crop Consultants
“Fungicide resistance in the
Management of Apple Scab”
March 4, 2002 Limburgerhof, BASF Internal Workshop
Germany “Fungicide Resistance – Risk Assessment and
Management”
*February 12 2001 Ventura, CA Gordon Research Conference, Agricultural
Science, Diversity Exploration in
Agricultural Science “Prospects for new
fungicides”
*April 5 2001 Sendai, Japan 11th Symposium on Fungicide Resistance
Phytopathological Society of Japan
“Resistance in apple scab to DMI and
strobilurin fungicides”
April 9 2001 Odawara, Japan Nippon Soda Co.
Internal Seminar Series
“Resistance to strobilurin fungicides”
May 7 2001 East Lansing, MI Michigan State University, Center for
Integrated Plant Systems, Workshop
Fungicide and Antibiotic Resistance
“ Fungicide resistance: Management
strategies”.
*August 14, 2000 New Orleans, LA APS Annual Meeting
“Fungicide resistance: Management Strategies”
*October 27, 1999 Honolulu 2nd Pan-Pacific Conference on Pesticide
Science "Resistance to Strobilurin
Fungicides"
September 15, 1999 Ithaca, NY Cornell Plant Pathology Seminar Series
"Chemotherapy of Plant Diseases".
July 12-15, 1999 Chile, Argentina Lecture series:
Brazil "Management of Fungicide Resistance".
February 14, 1999 Geneva, NY IPM Fruit School
"Management of resistance to DMI
fungicides"
*November 18, 1998 Las Vegas, NV APS Annual Meeting - Turf Working Group
"Management of fungicide resistance"
*August 7, 1998 Edingburg, UK 7th International Congress of Plant
Pathology "Mode of action studies with real
plant pathogens"
May 25, 1998 Princeton, NY Cyanamid Seminar Series
"Fungicide resistance"
January 20, 1998 Springhouse, PA Rohm and Haas Seminar Series
"Cutinase - Opportunities for plant disease
control"
*January 22, 1998 Miami, FL 5th FRAC Banana Working Group Meeting
"Status qou of DMI resistance"
June 17, 1998 St. Louis, MO Monsanto Internal Symposium
"Management of fungicide resistance - How
can the principles be applied to transgenic
traits ?"
*November 12, 1997 San José, Annual Meeting APS, Caribbean Division
Costa Rica "Status Quo and Future of Fungicide
Resistance"
*August 27, 1997 Orlando, FL ACS National Meeting
"Modes of action and management of
resistance"
February 7, 1997 Ballston, NY CCE Northeast NY Area Tree Fruit Schools
"Managing resistance in apple scab disease:
Present and potential fungicide strategies"
February 6, 1997 Plattsburg, NY CCE Northeast NY Area Tree Fruit Schools
"Managing resistance in apple scab disease:
Present and potential fungicide strategies"
July 22, 1996 Rahway, NJ Merck Research Laboratories Seminars
"Characteristics of fungicides for the control
of cereal diseases."
*July 1, 1996 Wädenswil Symposium on Soil, Mycorrhiza, Pathogens,
Switzerland Agriculture
"Nature and management of resistance to
DMI fungicides"
Febuary 6, 1996 ResearchTriangle Rhone-Poulenc
Park, NC "Dodine as tool for the management of DMI
resistance in apple scab control."
December 15, 1995 East Lansing, MI MSU Pesticide Research Center
"Status of DMI resistance in apple scab
control."
November 14, 1995 Ithaca, NY Cornell 1995 Production Agriculture
Inservice Education Week
"Fruit - New fungicide Chemistry."
*August 15, 1995 Pittsburg, PA 1995 APS Annual Meeting
Colloqium: Practical Aspects of Fungicide
Resistance Management.
"General overview and introduction."
*June 21, 1995 Big Sky, Montana ACS Special Conference
Molecular Genetics and Ecology of
Pesticide Resistance
"Relative merits of strategies for the
management of fungicide resistance."
*May 19, 1995 Reinhardsbrunn 11th International Symposium "Modern
Germany Fungicides and Antifungal Compounds"
"Recent developments in DMI resistance."
*May 16, 1995 Reinhardsbrunn 11th International Symposium "Modern
Germany Fungicides and Antifungal Compounds"
"Targets for plant protection - Can cutinase
be counted in ?"
May 8, 1995 Rahway, NJ Merck Research Laboratories Seminars
"Target site for anti-fungals."
May 8, 1995 Rahway, NJ Merck Research Laboratories Seminars
"Cutinase and plant disease control."
*August 19, 1994 Vancouver, BC Fifth International Mycological Congress
"Role of cutinase in the invasion of plants"
*July 7, 1994 Washington, DC Eighth IUPAC International Congress of
Pesticide Chemistry
"Managing resistance to sterol
demethylation inhibitors"
June 18, 1994 Chinju, Korea Gyeongsang National University
"Role of fungal cutinases in plant infection"
June 16, 1994 Seoul, Korea Korea Research Institute of Chemical
Technology
"Antifungal chemicals in the control of plant
diseases"
June 1, 1994 Limburgerhof, BASF Seminar Series
Germany "Management of DMI resistance"
May 30, 1994 Leverkusen, Bayer AG seminar Series
Germany "Function of cutinase isozymes"
May 11, 1994 Wädenswil, Swiss Federal Research Station for
Switzerland Horticulture – Seminar Series
Role of cutinase in plant infection"

May 7, 1994 Rahway, NJ Merck-Symposium "Antifungal Discovery
for Crop Protection: Molecular and
Biochemical Approaches"
"Chemical control of plant pathogens: past,
present, and future"
April 18, 1994 Las Vegas, NV WRCC-60 Workshop
"Status of fungicide resistance"
December 13, 1993 Indianapolis, IN DowElanco Apple Scab Resistance
Management Workshop
"Resistance management in apple scab
control."
October 13, 1993 Ithaca, NY Plant Pathology Seminar Series
"Recent progress of the development of
fungicides and future prospects."
October 7, 1993 Geneva, NY Plant Pathology Seminar Series
"Recent progress of the development of
fungicides and future prospects."
September 15, 1993 St. Louis, MO ALS-Inhibitor Herbicide Resistance
Working Group
"Status and Management of Fungicide
Resistance."
August 26, 1993 San Jose, Costa Rohm & Haas Banana Taskforce Meeting
Rica "Fungicide Resistance Management."
*August 5, 1993 Montreal, Canada 6th International Congress of Plant
Pathology "Recent progress of the
development of fungicides and
future prospects."
*April 13, 1993 East Lansing, MI MSU Pesticide Research Center Annual
Conference "Fungicide resistance - How did
it start and where do we stand ?"
January 28, 1993 Pultneyville, NY 1993 Lake Ontario Fruit School
"Dodine and sterol inhibitor resistance:
Why? Where? When?"

PUBLICATIONS

RESEARCH AND EXTENSION PUBLICATIONS

Refereed Journal Articles and Invited Reviews

Turechek, W. W., and Köller, W.  2004.  Managing resistance of Venturia inaequalis to the strobilurin fungicides.  Plant Health Progress doi: 10.1094/PHP-2004-0908-01-RS.

Köller, W.  2004.  Pathogens.  Pages 17-19 in: Management of Pest Resistance: Strategies Using Crop Management, Biotechnology, and Pesticides.  CAST Special Publication No. 24, Ames, Iowa.

Köller, W., Parker, D. M., Turecheck, W. W., Avila-Adame, C., and Cronshaw, K.  2004.  A two-phase resistance response of Venturia inaequalis populations to the QoI fungicides kresoxim-methyl and trifloxystrobin.  Plant Dis. 88:537-544.

Avila-Adame, C., Olaya, G., and Köller, W.  2003.  Characterization of Colletotrichum graminicola isolates resistant to strobilurin-related fungicides.  Plant Dis. 87:1426-1432.

Avila-Adame, C., and Köller, W.  2003.  Insertional mutagenesis of Magnaporthe grisea toward decreased responsiveness of alternative respiration to inhibition by azoxystrobin.  J. Gen. Plant Pathol. 69: 126-130.

Avila-Adame, C., and Köller, W.  2003. Characterization of spontaneous mutants of Magnaporthe grisea  expressing stable resistance to the Qo inhibiting fungicide azoxystrobin. Curr. Genet. 42: 332-338.

Avila-Adame, C., and Köller, W.  2003.  Impact of alternative respiration and target-site mutantions on responses of germinating conidia of Magnaporthe grisea to QoI-inhibiting fungicides.  Pest Managem. Sci 59:303-309.

Köller, W.  2003.  Fungicides, sterol biosynthesis inhibitors.  Pages 628-640 in:  The Encyclopedia of Agrochemicals.  Plimmer, J. R., ed., John Wiley, New York. Avila-Adame, C., and Köller, W.  2002.  Interrelation between alternative respiration and target site mutations in resistance to QoI fungicides.  Pages 829-834 in: The BCPC Conference Pests & Diseases 2002, Conference Proceedings, Vol. 2, British Crop Protection Council, Farnham, Surrey, UK.

Avila-Adame, C., and Köller, W.  2002.  Disruption of the alternative oxidase gene in Magnaporthe grisea and its impact on host infection.  Mol. Plant-Microbe Interact. 15:493-500.

Köller, W., Avila-Adame, C., Olaya, G., and Zheng, D.  2002.  Resistance to strobilurin fungicides.  Pages 215-229 in: Pesticide Science: Pesticide Resistance. J. M. Clark and I. Yamaguchi, eds.  American Chemical Society, Washington, DC.

Köller, W., and Wilcox, W.F.  2001.  Evidence for the predisposition of fungicide-resistant isolates of Venturia inaequalis to a preferential selection for resistance to other fungicides.  Phytopathology 91: 776-781.

Köller, W., Avila-Adame, C., Olaya, G., and Zheng, D.  2001.  Resistance to strobilurin fungicides.  Pages 215-229 in: Pesticide Science: Pesticide Resistance. J. M. Clark and I. Yamaguchi, eds.  American Chemical Society, Washington, DC.

Köller, W.  2001.  The plant cuticle.  Pages 281-285 in:  The Encyclopedia of Plant Pathology. 

Maloy, O.C., and Murray, T.D., eds., John Wiley, New York.

Köller, W.  2001.  Fungal cutinases.  Pages 285-289 in:  The Encyclopedia of Plant Pathology. 

Maloy, O.C., and Murray, T.D., eds., John Wiley, New York.

Köller, W.  2001.  Fungicide resistance.  Pages 483 - 488 in:  The Encyclopedia of Plant Pathology.  Maloy, O.C., and Murray, T.D., eds., John Wiley, New York.

Zheng, D., Olaya, G., and Köller, W.  2000.  Characterization of Venturia inaequalis  mutants resisting the strobilurin fungicide kresoxim-methyl.  Curr. Genet.38: 148-155.

Köller, W., and Wilcox, W.F.  2000.  Interactive effects of dodine and the DMI fungicide fenarimol in the control of apple scab.  Plant Dis. 84: 863-870.

Olaya, G., and Köller, W.  1999.  Diversity of kresoxim-methyl sensitivities in baseline populations of Venturia inaequalis.  Pestic. Sci.: 1083-1088.

Köller, W., and Wilcox, W.F.  1999.  Evaluation of tactics for managing resistance of Venturia inaequalis  to sterol demethylation inhibitors.  Plant Dis.83: 857-863.

Köller, W.  1999.  Chemical approaches to managing plant pathogens.  Pages 337-376 in:  Handbook of Pest Management.  J.R. Ruberson, ed., Marcel Dekker, New York.

Olaya, G., and Köller, W.  1999.  Baseline sensitivities of Venturia inaequalis  populations to the strobilurin fungicide kresoxim-methyl.  Plant Dis. 83: 274-278.

Köller, W., Wilcox, W.F., and Jones, A.L.  1999.  Quantification, persistence and status of dodine resistance in New York and Michigan orchard populations of Venturia inaequalis.  Plant Dis. 83: 66-70.

Olaya, G., Zheng, D., and Köller, W.  1998.  Differential responses of germinating Venturia inaequalis  conidia to kresoxim-methyl.  Pestic. Sci. 54: 230-236.

Fan, C.-Y., and Köller, W.  1998.  Diversity of cutinases from plant pathogenic fungi:  Differential and sequential expression of cutinolytic esterases by Alternaria brassicicola.  FEMS Microbiol. Lett. 158:  33-38.

Parker, D. M., and Köller, W.  1998.  Cutinase and other lipolytic esterases protect bean leaves from infection by Rhizoctonia solani.  Molec. Plant-Micr. Interac. 11: 514-522.

 Zheng, D., and Köller, W.  1997.  Characterization of the mitochondrial cytochrome b  gene from Venturia inaequalis.  Curr. Genet.32: 361-366.

Köller, W., Wilcox, W. F., Barnard, J., Jones, A. L., and Braun, G.  1997.  Detection and quantification of population shifts of Venturia inaequalis  to sterol demethylation inhibitors.  Phytopathology 87: 184-190.

Köller, W, and Yao, C.  1996.  Targets for plant protection - Can cutinase be counted in ?.  Pages 163-172 in:  Modern Antifungal Compounds.  H. Lyr, P. E. Russel and H. D. Sisler, eds., Intercept Ltd., Andover.

Köller, W.  1996.  Recent developments in DMI resistance.  Pages 301-311 in:  Modern Antifungal Compounds.  H. Lyr, P. E. Russel and H. D. Sisler, eds., Intercept Ltd., Andover.

Köller, W., Yao, C., Trail, F., and Parker, D. M.  1995.  Role of cutinases in the invasion of plants.  Can. J. Bot. 73 (Suppl.1): S1109-S1118.

Köller, W.  1995.  Managing resistance to sterol demethylation inhibitors.  Pages 340-349 in:  Eighth International Congress of Pesticide Chemistry - Options 2000.  N.N. Ragsdale, P.C. Kearny and J.R. Plimmer, eds., American Chemical Society, Washington, DC.

Beresniewicz, M. M., Taylor, A. G., Goffinet, M. C, and Köller, W.  1995.  Chemical nature of a semipermeable layer in seed coats of leek, onion (Liliaceae), tomato and pepper (Solanaceae).  Seed Sci. Technol. 23: 135-145.

Yao, C., and Köller, W.  1995.  Diversity of cutinase from plant pathogenic fungi:  Different cutinases are expressed during saprophytic and pathogenic stages of Alternaria brassicicola.  Molec. Plant-Micr. Interac. 8: 122-130.

Köller, W., Smith, F. D., Reynolds, K. L., Wilcox, W. F. and Burr, J. A.  1995.  Seasonal changes of sensitivities to sterol demethylation inhibitors in Venturia inaequalis  populations.  Mycol. Res. 99: 689-692.

Parker, D. M., Hilber, U. W., Bodmer, M., Smith, F. D.,  Yao, C., and Köller, W.  1995.  Production and transformation of conidia of Venturia inaequalis.  Phytopathology 85: 87-91.

Köller, W.  1994.  Chemical Control of Apple Scab - Status Quo and Future.  Norwegian J. Agric. Sci. Suppl. 17: 149-170.

Yao, C., and Köller, W.  1994.  Diversity of cutinase from plant pathogenic fungi:  Cloning and analysis of a cutinase gene from Alternaria brassicicola.  Physiol. Molec. Plant Pathol. 44: 81-92.

Hilber, U. W., Smith, F. D., and Köller, W.  1994.  Biolistic transformation of conidia of Botryotinia fuckeliana .  Curr. Genet. 25: 124-127.

Trail, F., and Köller, W.  1993.  Diversity of cutinases from plant pathogenic fungi:  Purification and characterization of two cutinases from Alternaria brassicicola.  Physiol. Molec. Plant Pathol. 42: 205-220.

Liyanage, H. D., Köller, W., McMillan, R. T., and Kistler, H. C.  1993.  Variation in cutinase from two sub-populations of Colletotrichum gloeosporioides  from citrus.  Phytopathology 83: 113-116.

 Köller, W.  1992.  Role of target research in the discovery of fungicides.  Pages 255-310 in:  Target Sites of Fungicide Action.  W. Köller, ed., CRC-Press, Boca Raton.

Köller, W.  1992.  Antifungal target sites in sterol function and biosynthesis.  Pages 119-206 in: Target Sites of Fungicide Action.  W. Köller, ed., CRC-Press, Boca Raton.

Köller, W., Smith, F. D., and Reynolds, K. L.  1991.  Phenotypic instability of flusilazole sensitivities of Venturia inaequalis,  Plant Pathol. 40: 608-611.

Köller, W., Parker, D. M., and Becker, C. M.  1991.  Role of cutinase in the penetration of apple leaves by Venturia inaequalis.  Phytopathology 81: 1375 - 1379.

Köller, W., Parker, D. M., and Reynolds, K. L.  1991.  Baseline sensitivities of Venturia inaequalis  to sterol demethylation inhibitors.  Plant Dis. 75: 726-728.

Smith, F. D., Parker, D. M., and Köller, W.  1991.  Sensitivity distribution of Venturia inaequalis  to the sterol demethylation inhibitor flusilazole:  Baseline sensitivity and implications for resistance monitoring.  Phytopathology 81: 392-396.

Köller, W.  1991.  Fungicide resistance in plant pathogens.  Pages 679-720 in:  CRC Handbook of Pest Management in Agricultue, 2nd Ed., Vol. 2.  D. Pimentel, ed.  CRC-Press, Boca Raton.

Köller, W.  1991.  The plant cuticle: A first barrier to be overcome by fungal plant pathogens.  Pages 219-246 in:  The Fungal Spore and Disease Initiation in Plants and Animals.  G. T. Cole and H. C. Hoch, eds.  Plenum Press, New York.

Trail, F., and Köller, W.  1990.  Diversity of cutinases from plant pathogenic fungi:  Evidence for a relationship between enzyme properties and tissue specificity.  Physiol. Molec. Plant Pathol. 37: 495-508.

Smith, F. D., and Köller, W.  1990.  The expression of resistance of Ustilago avenae  to the sterol demethylation inhibitor triadimenol is an induced response.  Phytopathology 80: 584-590.

Köller, W., Trail, F., and Parker, D. M.  1990.  Ebelactones inhibit cutinases produced by fungal pathogens.  J. Antibiotics 43: 734-735.

Köller, W., and Wubben, J. P.  1989.  Variable resistance factors of fungicides acting as sterol demethylation inhibitors.  Pestic. Sci. 26: 133-145.

Köller, W., and Parker, D. M.  1989.  Purification and characterization of cutinase from Venturia inaequalis.  Phytopathology 79: 278-283.

Köller, W.  1988.  Sterol demethylation inhibitors: Mechanism of action and resistance.  Pages 79-88 in:  Fungicide Resistance in North America.  C. J. Delp, ed.  APS-Press, St. Paul.

Köller, W., and Scheinpflug, H.  1987.  Fungal resistance to sterol biosynthesis inhibitors: A new challenge.  Plant Dis. 71: 1066-1074.

Krämer, W., Berg, D., and Köller, W.  1987.  Chemical synthesis and fungicidal resistance.  Pages 291-305 in: Combating Resistance to Xenobiotics - Biological and Chemical Approaches.  Ford et al., eds.  Ellis Horwood, Chichester.

Köller, W.  1987.  Isomers of sterol synthesis inhibitors:  Fungicidal effects and plant growth regulator activities.  Pestic. Sci. 18: 129-147.

Köller, W.  1987.  Plant growth regulator activities of stereochemical isomers of triadimenol.  Physiol. Plant. 71: 309-315.

Hippe, S., and Köller, W.  1986.  Ultrastructure and sterol composition of laboratory strains of Ustilago avenae  resistant to triazole fungicides.  Pestic. Biochem. Physiol. 26: 209-219.

Kolattukudy, P. E., and Köller, W.  1983.  Fungal penetration of the first line defensive barriers of plants.  Pages 79-100 in:  Biochemical Plant Pathology.  J. A. Callow, ed.  John Wiley, Chichester.

Espelie, K. E., Köller, W., and Kolattukudy, P. E.  1983.  9,16-Dihydroxy-10-oxo-hexadecanoic acid, a novel component in Citus  cutin.  Chem. Phys. Lipids 32: 13-26.

Köller, W., Allan, C. R., and Kolattukudy, P. E.  1982.  Protection of Pisum sativum  from Fusarium solani  f. sp. pisi  by inhibition of cutinase with organophophorus pesticides.  Phytopathology 72: 1425-1430.

Köller, W., Allan, C. R., and Kolattukudy, P. E.  1982.  Inhibition of cutinase and prevention of fungal penetration into plants by benomyl - A possible protective mode of action.  Pestic. Biochem. Physiol. 18: 15-25.

Köller, W., and Kolattukudy, P. E.  1982.  Mechanism of action of cutinase: Chemical modification of the catalytic triad characteristic for serine hydrolases.  Biochemistry 21: 3083-3090.

Köller, W., Allan, C. R., and Kolattukudy, P. E.  1982.  Role of cutinase and cell wall degrading enzymes in infection of Pisum sativum  by Fusarium solani  f. sp. pisi.  Physiol. Plant Pathol. 20: 47-60.

Frevert, J., Köller, W., and Kindl, H.  1980.  Occurence and biosynthesis of glyoxysomal enzymes in ripening cucumber seeds.  Hoppe-Seyler's Z. Physiol. Chem. 361: 1557-1565.

 Köller, W., and Kindl, H.  1980.  19S cytosolic malate synthase - A small pool characterized by rapid turnover.  Hoppe-Seyler's Z. Physiol. Chem. 361: 1437-1444.

 Kindl, H., Köller, W., and Frevert, J.  1980.  Cytosolic precursor pools during glyoxysome biosynthesis.  Hoppe-Seylers Z. Physiol. Chem. 361: 465-467.

 Köller, W., and Kindl, H.  1979.  Rates of de novo  synthesis of malate synthase and albumins during the very early phase of germination.  Z. Naturforsch. 34c: 1237-1242.

 Köller, W., Frevert, J., and Kindl, H.  1979.  Incomplete glyoxysomes appearing at a late stage of maturation of cucumber seeds.  Z. Naturforsch. 34c: 1232-1236.

Köller, W., Frevert, J., and Kindl, H.  1979.  Albumins, glyoxysomal enzymes and globulins in dry seeds of Cucumis sativus : Qualitative and quantitative analysis.  Hoppe-Seyler's Z. Physiol. Chem. 360: 167-176.

Köller, W., and Kindl, H.  1978.  Studies supporting the concept of glyoxyperoxisomes as intermediary organelles in transformation of glyoxysomes into peroxisomes.  Z. Naturforsch. 33c: 962-968.

Köller, W., and Kindl, H.  1978.  The appearance of several malate synthase containing cell structures during the stage of glyoxysome biosynthesis.  FEBS-Lett. 88: 83-86.

Köller, W., and Kindl, H.  1977.  Glyoxylate cycle enzymes of the glyoxysomal membrane from cucumber cotyledones.  Arch. Biochem. Biophys. 181: 236-248.

Abstracts

*,  invited lectures at national and international scientific meetings

* Köller, W.  2003.  Fungicide modes of action.  Phytopathology 93: S113.

* Köller, W.  2003.  Possible mechanisms in strobilurin resistance. 8th International Congress of Plant Pathology, Abstracts Volume 1 – Invited Papers, p.83.Köller, W.  2002.  Discovery of Targets for New Fungicides.  Book of Abstracts “Pesticides in the Molecular Age: A Satellite to the 11th North American ISSX Meeting.

Avila-Adame, C., and Köller, W.  2002.  Resistance of Colletotrichum graminicola to QoI inhibitors.  Phytopathology 92:S61.

Parker, D. M., and Köller, W.  2002.  Direct inhibition of fungal pathogens by a synergistic mixture of cutinase and Tween 20.  Phytopathology 92:S63.

* Köller, W.  2001.  Resistance in apple scab to DMIs and strobilurin fungicides.  Abstracts of the 11th Symposium of Research Committee on Fongicide Resistance, The Phytopathological Society of Japan.  pp 55- 65.

Avila-Adame, C., and Köller, W.  2001.  Disruption of the alternative oxidase gene in Magnaporthe grisea and its impact in pathogenicity.  Abstracts of the 10th International Congress “Molecular Plant-Microbe Interaction”, Abstract 352.

* Köller, W.  2001.  Resistance in Apple Scab to DMI and strobilurin fungicides.  Abstracts of the 11th Symposium of Research Committee on Fungicide Resistance, Phytopathological Society of Japan, pg. 55-66.

Avila-Adame, C., and Köller, W.  2000.  Impact of alternative respiration on Magnaporthe grisea sensitivity to strobilurin fungicides.  Phytopathology 90: S3.

Wang, T.B., and Köller, W.  2000.  A gene encoding a putative GDP/GTP exchange protein (GTP) for Rho 1 is a determinant of Magnaporthe grisea sensitivity to fenhexamid. Phytopathology 90: S82.

* Köller, W. 2000. Fungicide resistance: Management strategies. Phytopathology 90: S100.

Parker, D.M., and Köller, W.  1999.  Cutinase protects bean and cabbage leaves from infection by Sclerotinia sclerotiorum.  Phytopathology 89 (Suppl.), 59.

Avila-Adame, C., and Köller, W.  1999.  Strobilurin-sensitive mutants of Magnaporthe grisea  generated by restriction enzyme-mediated integration (REMI).  Phytopathology 89 (Suppl.), 4.

* Köller, W.  1998.  Mode of action of fungicides in real plant pathogens.  Abstracts 7th International Congress of Plant Pathology, Vol. 1, 5.5.1.S.

* Köller, W.  1997.  Status quo and future of fungicide resistance.  Annual Meeting APS - Caribbean Division, Abstract Book, pg. 95.

Olaya, G., and Köller, W.  1997.  Inheritance of resistance to the sterol inhibitor fungicide fenarimol in Venturia inequalis.  Phytopathology 87:S71.

Parker, D.M., and Köller, W.  1997.  Lipolytic esterases protect bean leaves from infection by Rhizoctonia solani.  Phytopathology 87:S75.

 Zheng, D., and Köller, W.  1997.  Characterization of the mitochondrial cytochrome b gene encoding the target site of strobilurin fungicides fromVenturia inequalis.  Phytopathology 87:S109.

* Köller, W.  1996.  Modes of action and management of resistance.  Abstracts of Papers American Chemical Society.  121 (1-2), Agro abstract # 61.

* Köller, W.  1995.  Targets for plant protection - Can cutinase be counted in ? 11th International Symposium Modern Fungicides andAntifungal Compounds", Reinhardsbrunn, Germany.  Book of Abstracts.

* Köller, W.  1995.  Recent developments in DMI resistance. 11th International Symposium Modern Fungicides andAntifungal Compounds", Reinhardsbrunn, Germany.  Book of Abstracts.

* Köller, W., and Wilcox, W. F.  1995.  Relative merits of strategies for the management of fungicide resistance.  Molecular Genetics and Ecology of Pesticide Resistance, ACS, Division of Agrochemicals, Special Conference VI, Big Sky, Montana, Conference Abstract Book: p. 26.

Matteson, M.C., Burr, T.J., Corral-Garcia, M.R., Parker, D., and Köller, W.  1995.  Russet of apple fruit induced by isolates of Rhodotorula glutinis  and Aureobasidium pullulans.  Phytopathology 85: 1558.

Köller, W.  1994.  Resistance to sterol demethylation inhibitors in the control of apple scab.  Second National Integrated Pest Management/Symposium/Workshop, Las Vegas, Nevada.  Proceedings p. 161.

* Köller, W.  1994.  Managing resistance to sterol demethylation inhibitors.  Eighth IUPAC International Congress of Pesticide Chemistry.  Book of Abstracts, Vol. 1, p. 494.

* Köller, W.  1994.  Role of cutinases in the invasion of plants.  Fifth International Mycological Congress.  Abstracts p. 111.

* Köller, W.  1993.  Recent progress in the development of fungicides and future prospects. 

            6th International Congress of Plant Pathology, Montreal, Abstracts p. 26.

 Bodmer, M., Hilber, U. W., and Köller, W.  1993.  Fitness of Venturia inaequalis  strains with different sensitivities to DMI fungicides.  6th International Congress of Plant Pathology, Montreal, Abstracts p. 56.

 Yao, C., and Köller, W.  1993.  Cloning and analysis of one cutinase gene from Alternaria brassicicola.  6th International Congress of Plant Pathology, Montreal, Abstracts p. 157.

 Hilber, U. W., Bodmer, M., and Köller, W.  1993.  Biolistic transformation of Botryotinia fuckeliana  and Venturia inaequalis.  6th International Congress of Plant Pathology, Montreal, Canada.  Abstracts p. 158.

Trail, F., and Köller, W.  1992.  Purification and characterization of two cutinases from Alternaria brassicicola.  Phytopathology 82: 1085.

Parker, D. M., and Köller, W.  1992.  Sporulation of Venturia inaequalis  on solid media.  Phytopathology 82: 1132.

Trail, F., and Köller, W.  1991.  Cutinase diversity in plant pathogenic fungi and its role in tissue specificity.  Sixteenth Fungal Genetics Conference, Asilomar Conference Center, Pacific Grove, CA, Program p 38.

Reynolds, K. L., and Köller, W.  1991.  Sensitivity of two populations of Venturia inaequalis  to dodine and flusilazole.  Phytopathology 81: 1138.

Smith, F. D., and Köller, W.  1990.  The effect of flusilazole on the germination of conidia of flusilazole-sensitive and resistant isolates of Venturia inaequalis.  Phytopathology 80: 1000.

Trail, F., and Köller, W.  1990.  A role for cutinase in the expression of tissue specificity by fungal pathogens.  Phytopathology 80: 1055.

 Muimba-Kangolongo, A., Bergstrom, G. C., Köller, W., and Nelson, E. B.  1990.  Pith discoloration is correlated with fungal ergosterol content in anthracnose stalk rot of maize.  Phytopathology 80: 1069.

 Köller, W.  1990.  The dynamics of molecular responses of a Ustilago avenae  mutant resistant to DMI-fungicides.  Seventh International Congress of Pesticide Chemistry, Hamburg, Book of Abstracts 04E-09.

* Köller, W.  1990.  Biochemical basis of resistance to fungicides.  Fourth International Mycological Congress, Regensburg, Germany, Abstracts IIF-289/4.

 Köller, W.  Biochemistry of fungicides acting as sterol demethylation inhibitors.  Abstracts 1990 CIC Congress, 49.

Smith, F. D., Köller, W., and Parker, D. M.  1989.  Baseline sensitivity of three populations of Venturia inaequalis  to flusilazole.  Phytopathology 79: 1171.

Köller, W., and Smith, F. D.  1989.  The expression of resistance of Ustilago avenae  to triadimenol is an induced response.  Phytopathology 79: 1170.

Trail, F., and Köller, W.  1989.  Diversity of cutinases from fungal pathogens.  Phytopathology 79: 1151.

Smith, D., and Köller, W.  1988.  Growth and sterol content of strains of Ustilago avenae  resistant and sensitive to triadimenol.  Phytopathology 78: 1511.

 Köller, W.  1988.  Cutinase from Venturia inaequalis.  Phytopathology 78: 1557.

* Köller, W.  1988.  Targets for novel fungicides.  5th International Congress of Plant Pathology, Kyoto, Japan, Abstracts of Papers: IX 3-6.

 Köller, W.  1988.  Resistance of Ustilago avenae  to sterol demethylation inhibitors.  5th International Congress of Plant Pathology, Kyoto, Japan, Abstracts of Papers: IX 1-91.

Köller, W.  1987.  Triadimenol enantiomers inhibit sterol biosynthesis in plants.  Plant Physiol. 83 (Suppl.): 67.

 Köller, W., and Kindl, H.  1978.  Protein bodies of cucumber seeds and seedlings.  Abstracts Botanikertagung Marburg 1978: 185.

 Köller, W., and Kindl, H.  1978.  Is malate synthase associated with the ER during the biosynthesis of glyoxysomes?  Abstracts Botanikertagung Marburg 1978: 183.

 Köller, W., and Kindl, H.  1977.  Dynamics and properties of two malate synthases bound to different types of membranes of cucumber cotyledons.  Hoppe-Seyler's Z. Physiol. Chem. 358: 1233.

Books

Köller, W., ed.  1992.  Target Sites of Fungicide Action.  CRC-Press, Boca Raton.  328 pp.  ISBN 0-8493-6855-3.

Köller, W., Meineke, I., Pfriem, S., and Würthwein, E. U.  1978.  Chemie in Experimenten - Ein Praktikum für Biologen.  Otto Salle Verlag, Frankfurt.  248 pp.  ISBN 3-7935-5079-6

Patents

 Köller, W., (Cornell University).  2000.  Esterases as inducers of plant defense reactions and agents for the control of plant diseases.  US Patent 6,080,565.

 Maurer, F., Sommer, H., Köller, W., Brandes, W., and Reinecke, P., (Bayer AG).  1987.  Preparation of pyridyl phosphate esters as agrochemical fungicides.  Chem. Abstr. 107: 231426n.

 Schwamborn, M., Kühle, E., Klauke, E., Brandes, W., and Köller, W., (Bayer AG).  1986.  Fungizide Mittel auf pyrimidin-Derivat-Basis.  Chem. Abstr. 105: 2232n.

 Schwamborn, M., Kühle, E., Brandes, W., and Köller, W., (Bayer AG).  1986.  Fungizide Mittel auf Triazin-Derivat-Basis.  Chem. Abstr. 105: 97504q.

Technical Publications

Rosenberger, D, Turechek, B., and Köller, W.  2004.  Revising scab control strategies.  Scaffolds Fruit Journal 13 (1):4-6.

Turecheck, B., and Köller, W.  2003.  Apple scab: Are the SIs used up, and how do the strobilurins help out ?  Scaffolds Fruit Journal 12(6):3-6.Rosenberger, D., Köller, W., and Turecheck, B.  2002.  Managing fungicide resistance in apple orchards.  Scaffolds Fruit Journal 11(4):1-4.

Rosenberger, D., Köller, W., and Turechek, B. 2002. Resistance is futile. American Fruit Grower 122(9):32-33

Köller, W.  1999.  Editorial - Funding of apple research by the apple growers.  New York Fruit Quarterly 6 (4): 1.

 Köller, W., and Wilcox, W.F.  1999.  Sustained control of apple scab:  Fungicide options, fungicide resistance and FQPA  New York Fruit Quarterly 6 (4): 14-18.

 Köller, W.  1998.  Current status quo of DMI resistance.  Summary and Recommendations - FRAC Banana Working Group pgs 4-6.

 Wilcox, W., and Köller, W.  1997.  Apple scab fungicide resistance - Where do we stand ?  Scaffolds Fruit Journal 6, No. 4,  4-5.

 Köller, W., Wilcox, W.F., and Olson, B. D.  1996.  Managing resistance of apple scab to sterol inhibitor fungicides.  Down to Earth 51:  20-24.

Wilcox, W., and Köller, W.  1996.  Apple scab resistance to sterol inhibitor fungicides ?  Scaffolds Fruit Journal 5, April 8:  5-7.

 Köller, W., and Wilcox, W.F.  1995.  Scab control and fungicide resistance.  What have we learned over the years ?  New York Fruit Quarterly 3: 12-17.

 Wilcox, W., and Köller, W.  1995.  Resistance risks / management strategies for SI fungicides.  American Fruit Grower, March 1995:  30-36.

 Köller, W., and Dennehy, T.J.  1994.  Pest resistance management and IPM.  Second National Integrated Pest Management/Symposium/Workshop, Las Vegas, Nevada.  Proceedings pp. 153-154.

 Köller, W.  1993.  Guest Editorial - APS and fungicide resistance.  Phytopathology NEWS 27: 170-171.

 Wilcox, W. F., and Köller, W.  1993.  Resistance risks and management strategies for SI fungicides used to control apple scab.  New York Fruit Quarterly 1: 9-11.

 Köller, W.  1991.  Management of resistance of apple scab.  Fruit Research Summaries:  Projects in Support of Integrated Pest Management Production Systems.  Joint Meeting of the Pomology Liaison Board, Apple Research Marketing Order Committee and the Statewide Fruit Industry Committee, NYSAES, Geneva, NY, pg. 25.

 Köller, W.  1991.  Mode of action of fungicides and fungicides of the future.  Proceedings of the 1st Nelson J. Shaulis Viticulture Symposium, 33-37.

  Smith, F. D., Köller, W., and Parker, D. M.  1989.  Baseline sensitivity of three populations of Venturia inaequalis  to flusilazole.  Resistant Pest Management Vol. 2 (No.1):  40.

  Köller, W.  1989.  Biochemistry of fungal resistance to sterol demethylation inhibitors.  Resistant Pest Management Vol. 1 (No.1):  14.