|Pappu, H. - UNIV OF GA|
|Jain, R. - UNIV OF GA|
|Rey, M. - UNIV OF WITWATERSRAND|
Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: March 17, 1998
Publication Date: N/A
Technical Abstract: A symptomless, seedborne potyvirus was isolated from guar germplasm in Griffin, GA. The host range and serology were similar to those reported for guar green-sterile virus (GGSV) and guar symptomless virus. Biological, serological, and molecular comparisons of the Georgia isolate and the South African GGSV indicate they are similar to each other and are closely related to bean common mosaic potyvirus (BCMV). The Georgia isolate is seed-transmitted at a rate of 94% in guar line PI 340385. Sequence analysis of the capsid protein (CP) gene and the 3' untranslated region (UTR) showed that both isolates are highly homologous (96% identity at the CP sequence level). GenBank searches indicated that both were most closely related to various strains of BCMV. The highest CP sequence and 3'UTR identities of 91% and 93%, respectively, were with those of BCMV-NL4. On the basis of the above criteria, both isolates from guar should be considered as strains of BCMV.