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Plant Pathology

Department of Plant Pathology


Plant Pathology Seminars

Autumn 2023

PLNTPTH 8899.  Seminars are Mondays, 9:10-10:05 am EST.  In-person in Kottman Hall 244 (Columbus) and Selby Hall 206 (Wooster).  Open to all interested.  Zoom link sent to the department listserv, or contact the seminar coordinators, Dr. Horacio-Lopez Nicora (, and Dr. Soledad Benitez Ponce (

August 25, 2023
Department Meet and Great

September 1
Dr. Monica Lewandowski, Professional Practice Assoc. Professor, Dept of Plant Pathology, Ohio State (presenting from Columbus)
Graduate Program Information and Deadlines: New and Current Students, Candidacy Exams, Graduation.

September 8
Dr. Tracy Hawk, Postdoctoral Scholar (Jacobs Lab) (speaker in Columbus)

Septmber 15
Dr. Sarah Lebeis, Dept of Plant, Soil and Microbial Sciences, Michigan State (speakerr in Wooster)
Harnessing microbiomes to improve plant health and resilience

September 22
Jeremy Held, Penn State (PPGSA student exchange program)

September 29
Dr. Angel Rebollar-Alviter, Universidad Autonoma, Chapingo, Mexico (via Zoom) (OSU alum)

October 6
Dr. Karin Jordan,  Assistant Dean of Graduate Development and Engagement, Graduate School (speaker in Columbus)
Mentoring Up

October 13
Autumn break (no classes, university offices open)

October 20
Dr. Daniel Hasegawa, Research Entomologist, USDA-ARS Crop Improvement and Protection Research, Salinas CA (speaker in Wooster)

October 27
Dr. Chatchawan Jantasuriyarat, Kasetsart University (OSU alum) (speaker in Columbus)

November 3
Taylor Klass, PhD candidate (Dr. Jacobs, advisor) (speaker in Columbus)

November 10
Veterans Day. No classes, university closed

November 17
Piao Yang, PhD Exit Seminar (Dr. Xia, advisor) (speaker in Columbus)

November 24
Holiday. No classes, university closed. (Thanksgiving break weekend)

December 1
Dr. Soledad Benitez Ponce, Associate Professor, Dept of Plant Pathology, Ohio State (speaker in Wooster)


Autumn 2022

August 29, 2022
Dr. Monica Lewandowski, Department of Plant Pathology, Ohio State
Important Grad Updates

Sept. 12, 2022..  
Dr. Zhengyin Xu, Visiting Scholar, Department of Plant Pathology, Ohio State (Dr. Guo-Liang Wang Lab) and Postdoctoral fellow, Department of Resources and Environment Shanghai Jiao Tong University, China (Dr. Gonyou Chen Lab)
Tales of the TALEs: the Arm Race between Rice and Xanthomonas oryzae

Sept. 19, 2022
Dr. Jonathan Jacobs, Assistant Professor, Department of Plant Pathology, Ohio State
Evolution of Xanthomonas from the leaf to the environment

Sept. 26, 2022

Oct. 3, 2022
Freddy Magdama, CIBE in ESPOL
An integrated approach to mitigate a possible incursion of Fusarium Tropical Race 4

October 10, 2022
Dr. Amer Fayed, USDA-NIFA
Phytopathologists and the roads less/more traveled: Reflections from the field

October 17, 2022
Dr. Jenny Wilson, USDA-ARS Corn, Soybean and Wheat Quality Research Unit
Poleroviruses: from model pathosystem to emerging threat

October 24, 2022
Ilse Huerta, University of Guanajuato, Mexico
Social science basics for plant pathologists

October 31, 2022
Linda Weber, PhD candidate, Plant Pathology, Ohio State
PhD Exit Seminar Pathogenicity and genomic characterization of Phytophthora sansomeana and the implications for disease management in soybean (Dr. Dorrance, advisor)

November 7, 2022
Dr. Devin Coleman Derr, USDA-ARS Plant Gene Expression Center
Drought and the crop root microbiome

November 14, 2022
Dr. Erik Ohlson, USDA-ARS Corn, Soybean and Wheat Quality Research Unit
Managing maize lethal necrosis using host resistance

November 21, 2022
Dimitre Mollov, USDA-ARS Horticultural Crops Disease and Pest Management Research Unit
Virus discovery and detection: challenges and opportunities

November 28, 2022
Malaika Ebert, North Dakota State University
Pulse Pathology in North Dakota

December 5, 2022
Soumya Ghosh, PhD candidate, PhD candidate, Plant Pathology, Ohio State
Mechanisms of tree defense against pathogenic attack

Spring 2022

PLNTPTH 8899.  Seminars are Mondays, 1:00-1:55 pm. All are welcome to connect via Zoom.
For Zoom link, contact Dr. Chris Taylor (

January 24
Dr. David Mackey, Department of Horticulture and Crop Science and Department of Molecular Genetics
Dynamic nutrient acquisition from a hydrated apoplast supports biotrophic growth of a bacterial pathogen of maize

January 31
David Wirt (Embedded Clinical Counselor; CFAES, Columbus) and A. Schaad (Embedded Clinical Therapist; CFAES, Wooster)
Title: “Counseling and Consultation Services Overview & Techniques to Manage Stress”

February 7
Cindy Morris, Research Director, Department of Plant Health and Environment, INRAE France. Joint seminar with IDI
Title: “From agrosystems to the Earth system: expanding the scope of the life history of plant pathogens”. (Host: Jonathan Jacobs)

February 14
Justine Beaulieu, Graduate Student Exchange, Department of Plant Pathology, University of California, Davis
Title: Plant Pathology and Climate Change: Managing Fusarium Diseases in Processing Tomatoes in the Face of Water Scarcity. (Hosts: Nathan Heiden and Amy Miller).

February 21
Leslie A. Holland, Assistant Professor & Extension Specialist Fruit Crops Pathology, University of Wisconsin-Madison
Title: “Re-investigating cranberry fruit rot and false blossom in Wisconsin marshes”. (Host: Francesca Hand)

February 28
Kai-Shu Ling, Vegetable Research Plant Pathologist, USDA, Charleston, SC
Title: “Emerging viruses and viroids in greenhouse tomato and their management” (Host: Ye Xia)

March 7
Greg Tylka, Professor, Department of Plant Pathology and Microbiology ISU
(Host: Horacio Lopez-Nicora)

March 14 - No seminar, spring break

March 21
Zachary Noel, Assistant Professor, Auburn University
(Host: Mitchell Roth)

March 28
Nathan Heiden, PhD candidate, Plant Pathology, OSU
Title: “Plant Health Management in Simplified Hydroponics

April 4
Omope Carter Daboiku, Farm Manager, Edgemont Solar Garden and Central State University Extension Beginning Farmer Incubator
Title: "Choose Wisely" (Host: Enrico Bonello)

April 11
Hailing Jin, Professor, Department of Microbiology & Plant Pathology, University of California, Riverside
Title: “
Innovative approaches for plant protection” (Host: Guo-Liang Wang)

April 18
Juan Luis González-Girón, Cornell Graduate Student Exchange
(Host Nathan Heiden and Amy Miller, could be an in person visit)

April 25
Tiffany Lowe-Power, Assistant Professor, Department of Plant Pathology, University of California, Davis. Joint seminar with Infectious Diseases Institute. Title: “Functional Diversity of the Ralstonia solanacearum Species Complex”. (Host: Jonathan Jacobs)

Autumn 2021

PLNTPTH 8899.  Seminars are Mondays, 10:20-11:15 am. All are welcome to connect via Zoom.
For Zoom link, contact Dr. Ye Xia (
Seminar coordinators: Dr. Ye Xia and Dr. Chris Taylor.

Aug 30
Dr. Monica Lewandowski, Assistant Professor, Department of Plant Pathology, Ohio State
“Graduate Updates for 2021-2022: What to do, and when"

Sep 6th Labor day, no class.

Sep 13, Dr. Enrico Bonello, Professor, Department of Plant Pathology, Ohio State
“Artificial intelligence or artificial stupidity? Machine learning in forest and agricultural crop health in the 21st century”

Sep 20, Dr. Jason Zurn, Postdoctoral researcher, Kansas State University
“Leveraging Genomic and Germplasm Resources to Improve Disease Resistance”

Sep 27, Dr. XiuFang Xin, Professor, Chinese Academy of Sciences
“Understanding the crosstalk between pathogen-recognizing immune pathways in plants”

Oct 4th, Dr. Christine Sprunger, Assistant Professor, School of Environment and Natural Resources, Ohio State
“Rhizosphere Dynamics drive soil health and plant performance in agroecosystems”

Oct 11th, Dr. Ying Wang, Assistant Professor, Mississippi State University
“Potato spindle tuber viroid, a small probe for understanding plant RNA-based machinery”

Oct 18th,  Dr. Zhengqing Fu, Associate Professor, Department of Biological Sciences, University of South Carolina
“Transcriptional Coactivators and Coordination of Plant Growth and Defense”

Oct 25th, Dr. Lirong Zeng, Associate Professor, University of Nebraska-Lincoln;
Dr. Anna Conrad, Research Plant Pathologist, Forest Service, Northern Research Station;
Dr. Cláudio M. Vrisman, Biology Characterization Scientist for Fungicides, Corteva Agriscience;
Dr. Spencer Debenport, Applications Manager at Roche Company
Alumni Career Conversations

Nov 1st, Dr. Michelle L. Jones, Professor, Deprtment of Horticulture and Crop Science, Ohio State
“Identifying plant growth promoting bacteria that improve abiotic stress tolerance in greenhouse crops”

Nov 8th, Dr. Feng Qu, Professor, Ohio State
“Artificial selection, natural selection, genes, and viruses”

Nov 15th, Dr. Doug Karcher, Professor and Chair, Deprtment of Horticulture and Crop Science, Ohio State
“Turf Talk with Doug Karcher”.

Nov 22nd, Dr. Roger Innes, Professor, Department of Biology, Indiana University Bloomington
“Extracellular RNA in Plants:  Where Does It Come From and What Does It Do?”

Nov 29th, Dr. Yuelin Zhang, Professor, Departments of Botany, University of British Columbia, Canada
“Salicylic Acid in Plant Immunity”

Dec 6th, Dr. Carmit Ziv, Research Group Leader, Institute of Postharvest and Food Sciences, Israel
"Cold tolerance of postharvest phytopathogenic fungi"


Spring 2021

PLNTPTH 8899.  Seminars are Mondays, 12:40-1:35 pm. For Zoom link, contact Dr. Feng Qu (
Seminar coordinators: Dr. Francesca Hand and Dr. Feng Qu

Soybean pathologist candidate

1/18/2021 - No seminar, Martin Luther King Day

Soybean pathologist candidate


Satyanarayana Tatineni, Research plant pathologist, USDA ARS, University of Nebraska, Lincoln
Biology and disease management of Wheat streak mosaic virus

Patrick Ewing, USDA Integrated Cropping Systems Research Station, Brookings, SD. (Host: Soledad Benitez Ponce)

James N. Culver, Professor, University of Maryland
Reprogramming the Plant Vascular System: A Viral Approach to Systemic Disease

Robert V. Tauxe, Director, Division of Foodborne, Waterborne, and Environmental Diseases, NCEZID, DDID, CDC (Host: F. Hand)
Foodborne infections in the United States and improvements in foodborne outbreak detection and investigation

Olufemi (Femi) J. Alabi, Associ Prof, Texas A & M University
Retooling Extension Plant Pathology to Address Plant Virus Disease Outbreaks


Shin-Yi Marzano, Molecular Biologist, USDA ARS, Toledo, OH

Neha Potnis, Assistant Professor. Department of Entomology and Plant Pathology, Auburn University (Host, J. Jacobs)
Uncovering the basis of host adaptation in a stealthy plant pathogenic bacterium, Xanthomonas

Peter Moffett, University of Sherbrooke, Canada

Jiyang Wang, Visitng scholar, Department of Plant Pathology, Ohio State

Caleb Kime, M.S. student, Plant Pathology, Ohio State (P. Bonello, advisor)

4/26/2021 - Final exams, No Seminar


Autumn 2020

PLNTPTH 8899.  Seminars are Mondays, 10:20-11:15 am. For Zoom link, contact Dr. Francesca Hand (

Seminar coordinators: Dr. Francesca Hand and Dr. Feng Qu

Drs. Monica Lewandowski/Jason Slot, Department of Plant Pathology, Ohio State.  Graduate Program Updates


Felipe Dalla Lana da Silva, Plant Pathology Ph.D. candidate, Ohio State (P.A. Paul, advisor).  Exit seminar

Dr. Caroline Roper, University of California, Riverside

Dr. Sarah Hovinga, BAYER Biologics

Dr. Larry Madden, Department of Plant Pathology, Ohio State

Margery Daughtrey, Cornell University

Dr. JoAnne Crouch, USDA-ARS (Beltsville, Maryland)

Dr. Katie Gold, Cornell University

Dr. Nicole Ward Gauthier, University of Kentucky

Student exchange seminar, Penn State

Student exchange seminar, University of California, Davis

Dr. Barbara Kowalcyk, Department of Food Science and Technology, Ohio State

Student exchange seminar, Michigan State University


Spring 2020

PLNTPTH 8899.  Seminars are Mondays, 1:00-1:55 pm.  Alternate day/time: Fridays, 1:50-2:45 pm.

Subject to change.

Jan. 6, 2020
Ranjana Rawal, Horticulture and Crop Science PhD student

Jan. 13, 2020
Phillip Martins, Penn State graduate student (Kari Peters, advisor). Part of a graduate student seminar exchange with Penn State.

Jan 20, 2020
Holiday, Martin Luther King, Jr. Day.  No seminar.

Friday, Jan. 24
Lisa Vaillancourt, Professor, University of Kentucky
Evidence for a special role of the signal peptidase in the establishment of biotrophy by the maize anthracnose pathogen Colletotrichum graminicola

Friday, Jan. 31
1:50-2:45 pm, Kottman 244 (Columbus) - Fisher 121 (Wooster)
Matthew Kasson, Interim Director of the International Culture Collection of (Vesicular) Arbuscular Mycorrhizal Fungi (INVAM)
Assistant Professor of Forest Pathology, West Virginia University
Deciphering fungus-arthropod interactions: from ambrosia fungi to cicada-killing “zygomycetes”

Monday, Feb. 3
1:00-1:55 pm - Fisher 121 (Wooster) videolinked to Kottman 244 (Columbus)
Ying-Yu Liao, PhD student, University of Florida (advisor, Mathews Paret) - Graduate Student Exchange Seminar
Magnesium nanomaterial, a novel alternative to bacterial spot of tomato disease management

Monday, Feb. 10

Monday, Feb. 17
1:00-1:55 pm, Kottman 244 (Columbus) - Fisher 121 (Wooster)
Alison Bennett, Assistant Professor - Evolution, Ecology and Organismal Biology, Ohio State

March 2

Week of March 9-13, Spring Break
No seminar

Monday March 16 (Postponed to April 23)
1:00-1:55 pm, Fisher 121 (Wooster) videolinked to Kottman 244 (Columbus)
Rebecca Kimmelfield, PhD candidate, Translational Plant Sciences (Christopher Taylor, advisor)
Exit Seminar

Monday, March 23 - Cancelled.
1:00-1:55 pm, Fisher 121 (Wooster) videolinked to Kottman 244 (Columbus)
Chris Peritore-Galve, Cornell University - Graduate Student Exchange Seminar

Friday, March 27
1:50-2:45 pm, Kottman 244 (Columbus) and Fisher 121 (Wooster)
Jean Ristaino, North Carolina State University

March 30

Monday, April 6, 2020
1:00-1:55 pm, Kottman 244 (Columbus) - Fisher 121 (Wooster)
Coralie Farinas, PhD candidate, Plant Pathology, Ohio State
PhD Exit seminar

April, 13, 2020

Monday April 20, 2020
1:00-1:55 pm, Fisher 121 (Wooster) videolinked to Kottman 244 (Columbus)
Michael Goodin, University of Kentucky