Pathogen Biology and Genetics (PBG)
|PBG Research Area Committee Members as of: 1/1/21|
|Chair, Martha Vaughan, USDA-ARS, Peoria, IL|
|Vice-Chair, Lisa Vaillancourt, University of Kentucky|
|Marike Boenisch, University of Minnesota|
|Guixia Hao, USDA-ARS, IL|
Research in this area includes studies that address mycotoxin biosynthesis in vivo or in planta, host/parasite interactions, and host resistance mechanisms that target the pathogen. Research in PBG should complement and be linked to whole plant research that will lead to disease control and/or toxin reduction strategies.
- Identify important genes, proteins or small molecules produced during the plant-fungal interaction that may be used to develop FHB resistance or to reduce DON contamination in barley and wheat.
- Develop new understanding about molecular regulators (transcriptome, proteome, metabolome, epigenetic factors) of fungal development (e.g., asexual and sexual development, growth and development, infection structures) during initial infection that may be utilized to boost FHB resistance. This would include mechanisms controlling fungal secretion (ER, Golgi, endosomes, exosomes), and regulators which may be targeted to prevent FHB disease and toxin contaminations in wheat and barley.
- Develop an improved understanding of plant-pathogen interactions in relation to abiotic factors, and identify genes or genetic variants that contribute to pathogen adaptation to wheat and barley agroecosystems. Identify molecular mechanisms of fungal adaptation to abiotic and biotic factors influencing FHB and toxin production.
- Develop novel RNAi based strategies targeting critical genes for fungal growth, pathogenesis, and/or mycotoxin biosynthesis to control FHB and mycotoxin contamination.
- Identify epiphytic or endophytic microbes or microbial communities or viruses that may be useful for development of effective biological control practices for FHB.
- Investigate how genotypic and phenotypic diversity in populations of FHB-causing Fusarium, including diversity of Fusarium species complexes, influences the management of FHB. Priority aspects of pathogen diversity include fungicide sensitivity, mycotoxin profiles, and ability to cause severe disease on widely used sources of genetic resistance in wheat and barley. (Collaborative Goal with MGMT)
- Document how cropping system factors (climate, residue management, crop rotation) influence both the frequencies of Fusarium species causing FHB within an area and the risk of severe disease. (Collaborative Goal with MGMT)
Current version of Action Plan (Updated: 5/31/19)
|Summary of Funding|
|FY20 (2020-21)||FY20 (2020-21)|
|Number of Projects:||8||8|
|Number of PIs:||8||8|
|Total Award Amount:||$337,023||$302,708|
|% of Total Funding:||3.66%||3.50%|
- Population Genetic Structure and Chemotype Diversity of Fusarium graminearum Populations from Wheat in Canada and North Eastern United States
Canadian Journal of Plant Pathology,Toxins (2021), Volume 13, Issue 3
- The Fusarium graminearum isolates obtained from wheat and wild grasses in northeastern New York display comparable range of phenotypes, including virulence on crop hosts
Journal of Plant Pathology, Published Online: January 7, 2021
- The Fusarium graminearum t-SNARE Sso2 Is Involved in Growth, Defense, and DON Accumulation and Virulence
Molecular Plant Microbe Interactions, June 2020, Volume 33, Issue 7, Pages 888-901
- Structure and diversity of Fusarium communities inhabiting non-cultivated grass inflorescences in New York State
Can. J. Plant Pathol. : in press
- Regional and field-specific differences in Fusarium species and mycotoxins associated with blighted North Carolina wheat
International Journal of Food Microbiology, June 2020, Volume 323
- Variable interactions between non-cereal grasses and Fusarium graminearum
Canadian Journal of Plant Pathology, May 2019, Volume 41, Issue 3, Pages 450-456
- Population Genetics of Fusarium graminearum at the Interface of Wheat and Wild Grass Communities in New York
Phytopathology, May 2019, Volume 109, No. 12, Pages 2124-2131
- Surface interactions of Fusarium graminearum on barley
Published in Molecular Plant Pathogology,(2018)19(6), pp. 1332–1342 DOI: 10.1111/mpp.12616
- Report: 2008 USWBSI PBG Planning Meeting
- Gene Sequencing Data - Fusarium graminearum Genomics
- Histology of Fusarium Head Blight - Selected References (PDF)