Source: UNIVERSITY OF CALIFORNIA, RIVERSIDE submitted to NRP
THREAT AND SPREAD OF NEW AND NOVEL SOUTH AMERICAN CA. LIBERIBACTER SPECIES
Sponsoring Institution
Agricultural Research Service/USDA
Project Status
ACTIVE
Funding Source
USDA COOPERATIVE AGREEMENT
Reporting Frequency
Annual
Accession No.
0444482
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
(N/A)
Project Start Date
Jun 1, 2023
Project End Date
Sep 30, 2025
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
UNIVERSITY OF CALIFORNIA, RIVERSIDE
(N/A)
RIVERSIDE,CA 92521
Performing Department
(N/A)
Non Technical Summary
(N/A)
Animal Health Component
30%
Research Effort Categories
Basic
60%
Applied
30%
Developmental
10%
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
21113101130100%
Knowledge Area
211 - Insects, Mites, and Other Arthropods Affecting Plants;

Subject Of Investigation
1310 - Potato;

Field Of Science
1130 - Entomology and acarology;
Goals / Objectives
1) Screen R. capsici populations and their host plants in agricultural fields in Brazil for Ca. Liberibacter capsica infection and determine if plants infected with Ca. Liberibacter capsica have plant disease symptoms. 2) Screen psyllid species in agricultural fields that share host plants and a geographic range with R. capsici and R. solanicola for Ca. Liberibacter spp. infection; screen host plants of relevant Russelliana spp. for Ca. Liberibacter spp. infection and presence of disease symptoms. 3) Determine the efficacy of psyllid traps for monitoring Russelliana spp. and their associated pathogens; determine host plant associations by sequencing gut contents.
Project Methods
Psyllids and host plant samples will be collected from agricultural fields and surrounding weed reservoirs in the State of São Paulo, Brazil. Specimens will be shipped to Cooperator for non-destructive DNA extractions on psyllids and voucher preparation DNA will be used for identifying bacterial plant pathogens by sequencing 16S, and for molecular gut content analysis to assess landscape movements of psyllids prior to their capture.