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ARS Home » Southeast Area » Fort Pierce, Florida » U.S. Horticultural Research Laboratory » Subtropical Plant Pathology Research » Research » Publications at this Location » Publication #400835

Research Project: Mitigation of Domestic, Exotic, and Emerging Diseases of Subtropical and Temperate Horticultural Crops

Location: Subtropical Plant Pathology Research

Title: Sida golden mosaic virus, an emerging pathogen of snap beans (Phaseolus vulgaris L.) in the southeastern United States

item GAUTAM, SAURABH - University Of Georgia
item BUCK, JAMES - University Of Georgia
item DUTTA, BHABESH - University Of Georgia
item COOLONG, TIMOTHY - University Of Georgia
item SANCHEZ, TATIANA - University Of Florida
item SMITH, HUGH - University Of Florida
item Adkins, Scott
item SRINIVASAN, RAJAGOPALBABU - University Of Georgia

Submitted to: Viruses
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/25/2023
Publication Date: 1/26/2023
Citation: Gautam, S., Buck, J.W., Dutta, B., Coolong, T., Sanchez, T., Smith, H.A., Adkins, S.T., Srinivasan, R. 2023. Sida golden mosaic virus, an emerging pathogen of snap beans (Phaseolus vulgaris L.) in the southeastern United States. Viruses. 15:357.

Interpretive Summary: Sida golden mosaic virus (SiGMV) is an economically important whitefly-transmitted virus infecting snap beans in Georgia and Florida. This study, using field-collected SiGMV isolates examined the putative host range, vector-mediated transmission, and SiGMV-modulated effects on host -vector interactions that could influence SiGMV epidemics, as well as analyzed the phylogenetic relationships of SiGMV with related viruses reported from Sida spp. These results will help growers, crop consultants, entomologists, virologists and regulatory scientists.

Technical Abstract: Sida golden mosaic virus (SiGMV) was first detected from snap bean (Phaseolus vulgaris L.) in Florida in 2006 and Georgia in 2018. Since then, it has caused significant economic losses to snap bean growers in Georgia. Host range studies confirmed that SiGMV can infect seasonal crops and perennial weed species including snap bean, hollyhock, marsh mallow, okra, prickly sida, and tobacco. SiGMV symptoms and accumulation varied between hosts. The whitefly vector, Bemisia tabaci, was able to complete its life cycle on all plant species irrespective of SiGMV infection status. Whiteflies efficiently back-transmitted SiGMV from infected prickly sida, hollyhock, marsh mallow, and okra to snap beans. Complete DNA-A sequences from this study shared 97% nucleotide identity with SiGMV sequences reported from Florida and phylogenetically it was found to be closely related with sida viruses reported from the New World. These results suggest that SiGMV, a New World begomovirus, has a broad host range that allow its establishment in the farmscapes/landscapes of the southeastern United States and is an emerging threat to snap bean and possibly other crops. This is important information for growers and crop consultants, and also entomologists, virologists and regulatory scientists.