The 66th Annual Conference on Soilborne Plant Pathogens
and The 51st California Nematology Workshop
Tuesday March 23 – Wednesday March 24, 2021
ALL TIMES LISTED ARE FOR THE LOS ANGELES, CALIFORNIA TIME ZONE, WHICH IS PACIFIC DAYLIGHT TIME (PDT; UTC-7 hours)
Tuesday March 23, 2021
7:30-8:00 am Practice for presenters. Presenters will be sent a separate zoom meeting link.
8:00-8:15 am Opening Remarks: Tim Paulitz
8:15-9:00 am Keynote Talk: Career Retrospectives of Soilborne Pathogens
Thomas Gordon, UC Davis. Fusarium oxysporum: Where it comes from and what it does. trgordon@ucdavis.edu
9:00-10:45 am Session I. Session Chair: Kelley Paugh, UC Davis. krpaugh@ucdavis.edu (six 15-minute talks below)
Fusarium avenaceum colonization of wild oat (Avena fatua L.) caryopses induces proteome-wide defense responses in the pathogen and host. Patricia Okubara, USDA-ARS. pokubara@wsu.edu
Evaluating resistance-based management strategies for Fusarium falciforme, an emerging vine decline pathogen of California processing tomato. Alyssa Brackrog, UC Davis. albrackrog@ucdavis.edu
Soil quantification of Fusarium oxysporum f. sp. vasinfectum race 4 and infection response in cotton cultivars. Jennifer Chagoya, Texas A&M. jcchagoya@ag.tamu.edu
Screening cotton cultivars for resistance to Fusarium wilt disease. Jessica Dotray, Texas A&M. jessica.dotray@ag.tamu.edu
Effect of rotation crop on survival of Fusarium oxysporum f. sp. lycopersici and development of Fusarium wilt in tomato. Kelley Paugh, UC Davis. krpaugh@ucdavis.edu
Root-knot nematode management in a pepper-squash plasticulture system using fumigant and non-fumigant nematicides. Chinaza Nnamdi, University of Georgia. Chinaza.Nnamdi@uga.edu
5 MIN LIGHTNING TALK. Nematicide use-decline: Exploring the past to understand the present. Ole Becker, UC Riverside. obecker@ucr.edu
Brief discussion (10-minutes)
10:45-11:00 am Break
11:00 am-1:20 pm Session II. STUDENT PRESENTATIONS. Session Chair: JP Dundore-Arias, CSU Monterey Bay. jdundorearias@csumb.edu (eight 15-minute talks below)
Tim Paulitz will announce the winners of the student competition (5 minutes).
Wheat rhizosphere bacteriome reveals genotype-specific recruitment and suppression against Rhizoctonia solani AG8. Christine Dilla-Ermita, Washington State University. c.ermita@wsu.edu
Identifying inoculum reservoirs for Ceratocystis fimbriata in sweetpotato production systems. Madison Stahr, NC State University. mnstahr@ncsu.edu
The role of irrigation in disease development and management of Macrophomina charcoal rot on strawberries. Lindsey Pedroncelli, UC Riverside. lpedr004@ucr.edu
Influence of spatial planting arrangement of winter rye cover crop on corn seedling disease and corn productivity. Sarah Kurtz, Iowa State University. smkurtz@iastate.edu
Evaluating the spatiotemporal dynamics of soilborne Fusarium oxysporum f. sp. vasinfectum race 4 inoculum. Roy Davis, Texas A&M. davi64345@tamu.edu
Comparison of egg hatching rates of Meloidogyne species and screening of soybean germplasm for resistance to M. enterolobii. Tanner Schwarz, NC State University. tschwar@ncsu.edu
Understanding soil fungus-soybean cyst nematode egg interactions through microscopic and transcriptomic examinations. Dong-gyu Kim, University of Minnesota. kimx4617@umn.edu
Pyramiding cover crop rotation of sunn hemp or rye with tillage practices for suppression of plant parasitic nematodes, fungal soilborne diseases and weeds in a bare-ground vegetable production system. Josiah Marquez, University of Georgia. Josiah.Marquez@uga.edu
5 MIN LIGHTNING TALK. Mining the mycobiome of the soybean cyst nematode for biological control. Kathryn Bushley, University of Minnesota. kbushley@umn.edu
Brief discussion (10-minutes)
:00-5:00 pm Meeting of the California Nematology Workgroup (separate meeting; optional). M\Zoom meeting link: https://ucanr.zoom.us/j/97832916071?pwd=aTAzcEtObzY4RXMrUUt1bmhOWDZqUT09 Meeting ID: 978 3291 6071 Passcode: 888515
Wednesday March 24, 2021
7:45-8:00 am Please click the meeting link so you can open up zoom and troubleshoot any issues before the event starts. We plan on starting promptly at 8 am. Presenters will be sent a separate link.
8:00-8:45 am Keynote Talk: Career Retrospectives of Soilborne Pathogens
Becky Westerdahl, UC Davis. From Temik to transgenic: A nematological odyssey.bbwesterdahl@ucdavis.edu
8:45-10:45 am Session III. Session Chair: Andreas Westphal, UC Riverside- Parlier. andreas.westphal@ucr.edu (Seven 15-minute talks below)
Host status of selected vegetable crops for a California Meloidogyne floridensis population. Antoon Ploeg, UC Riverside. antoon.ploeg@ucr.edu
The host-specific impact of root exudates on virulence of potato cyst nematode, Globodera pallida. Joanna Kud, University of Idaho. jkud@uidaho.edu
Use of remote sensing technology to evaluate the effectiveness of different fungicides to manage Phomopsis stem canker of sunflower. Ruchika Kashyap, South Dakota State University. Ruchika.Ruchika@jacks.sdstate.edu
Effects of fumigants and biofumigants on replant disease of American ginseng (Panax quinquefolius L.). Amy Fang Shi, University of Guelph. fshi@uoguelph.ca
Impact of acetaminophen on soil borne plant pathogens in soils containing Solanum melongena. Nathan McLain, UC Riverside. nmcla001@ucr.edu
Novel species of actinobacteria isolated from acid forest soil with high activity against fungal phytopathogens. Magdalena Świecimska, Nicolaus Copernicus University, Toruń. magda.swiecimska@gmail.com
Bacteria and fungi that correlate with Huanglongbing (HLB) tolerance in Florida. James Borneman, UC Riverside. borneman@ucr.edu
5 MIN LIGHTNING TALK. Our fourth prune springtime without replant problems, bacterial canker or fumigants. Michael McKenry, UC Riverside emeritus. mvmckenry83@gmail.com
Brief discussion (10-minutes)
10:45-11:00 am Break
11:00-1:15 pm Session IV. Session Chair: Peter Henry, USDA-ARS, Salinas. peter.henry@usda.gov (eight 15-minute talks below)
Genomic diversity of Agrobacterium tumefaciens strains isolated from walnut orchards in California. Amisha Poret-Peterson, USDA-ARS. Amisha.poretpeterson@usda.gov
Novel and available genetics to manage soilborne pathogens using grafted vegetable plants. Frank Louws, NC State University. fjlouws@ncsu.edu
Biochar induced bacterial and fungal microbiome promotes plant growth and mediates systemic resistance in tomato against soilborne disease. Amit Jaiswal, Purdue University. jaiswal3@purdue.edu
Root rot mitigation in pulse crops. Carmen Murphy, Montana State University. carmenmurphy@montana.edu
The impacts of biofungicides on Pythium species and their associated microbiome in the soil. Emma Gachomo, UC Riverside. egachomo@ucr.edu
Leveraging comparative genomics to develop Methylobacterium spp. biocontrol products for Pythium spp. and Fusarium virguliforme in soy. Allison Jack, NewLeaf Symbiotics. ajack@newleafsym.com
The unknown relationship between potato mop-top virus and its soil-borne vector. Jennifer Rushton, Colorado State University. J.Rushton@colostate.edu
Soil-borne disease diagnosis and management: recent advances and future directions. Kandiah Pakeerathan, University of Jaffna. pakeerathank@univ.jfn.ac.lk
5 MIN LIGHTNING TALK. Effect of 6-Methoxy-2-benzoxazolinone on Pythium species and corn seedling growth and disease. Jyotsna Acharya, Iowa State University. jacharya@iastate.edu
Brief discussion (10-minutes)
The Conference on Soilborne Plant Pathogens would like to thank our corporate sponsors for their support. Their contributions went to cover student scholarships, lunches, and food for the social.
