Submitted to: American Phytopathological Society Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 3/20/2003
Publication Date: 7/1/2003
Citation: Idris, A.M., Brown, T.K., French, R.C., Stenger, D.C. 2003. Variation among isolates of pepper golden mosaic virus suggests a begomovirus species complex. American Phytopathological Society Annual Meeting. Phytopathology 93 (supplement):538 Interpretive Summary:
Technical Abstract: Three isolates of Pepper golden mosaic virus (PepGMV) differ in symptom expression on pepper: PepGMV-Sinaloa (S; formerly SGMV) caused bright golden mosaic, PepGMV-Mosaic (Mo) caused yellow-green mosaic, and PepGMV-Distortion (D) caused mild mosaic and foliar distortion. The bipartite genome of each isolate was sequenced and compared to two other PepGMV isolates (-Tam and -CR). Nt sequence identity for the five isolates ranged between 92.2-96.0% (DNA-A) and 87.6-99.6 (DNA-B). Cloned DNA-A and DNA-B components of PepGMV-S, -Mo, and -D were infectious by biolistic inoculation to pepper, and each isolate¿s distinct symptom phenotype was reproduced. PepGMV-S and -Mo were transmissible between pepper and tomato by Bemisia tabaci biotype B whereas, PepGMV-D was not. However, PepGMV-D DNA-A was whitefly transmissible when co-inoculated to pepper with either DNA-B of PepGMV-S or -Mo. These results indicate that PepGMV exhibits significant variation in both genotype and phenotype, such that PepGMV may be viewed as a species complex.