Watermelon chlorotic stunt virus from the Sudan and Iran: Sequence comparisons and identification of a whitefly-transmission determinant

Authors
Kheyr-Pour, A Bananej, K Dafalla, GA Caciagli, P Noris, E Ahoonmanesh, A Lecoq, H Gronenborn, B
Citation
A. Kheyr-pour et al., Watermelon chlorotic stunt virus from the Sudan and Iran: Sequence comparisons and identification of a whitefly-transmission determinant, PHYTOPATHOL, 90(6), 2000, pp. 629-635
Citations number
56
Categorie Soggetti
Plant Sciences
Journal title
PHYTOPATHOLOGY
ISSN journal
0031949X → ACNP
Volume
90
Issue
6
Year of publication
2000
Pages
629 - 635
Database
ISI
SICI code
0031-949X(200006)90:6<629:WCSVFT>2.0.ZU;2-A
Abstract
The genomes of two Watermelon chlorotic stunt virus (WmCSV) isolates, one f rom the Sudan and one from Iran, were cloned and sequenced. Sequence relati onship with other geminiviruses characterizes WmCSV as a typical Eastern He misphere geminivirus with a bipartite genome. The two geographically distan t WmCSV isolates from Africa and the Middle East share a very high overall sequence similarity: 98% between their DNA-A and 96% between their DNA-B co mponents, and their respective capsid proteins are identical. A single amin o acid change in the capsid protein (N131D) renders WmCSV whitefly nontrans missible. This region of the capsid is also implicated in transmission by B emisia tabaci of Tomato yellow leaf curl virus.