AL2 and L2 are related proteins encoded by geminiviruses of the Begomovirus and Curtovirus genera, respectively. Both are pathogenicity determinants that cause enhanced susceptibility when expressed in transgenic plants. To understand how geminiviruses defeat host mechanisms that limit infectivity, we searched for cellular proteins that interact with AL2 and L2. Here, we present evidence that t...

Abstract Five grapevine viruses, including geminivirus A (GGVA), Syrah virus 1 (GSyV-1), Cabernet Sauvignon reovirus (GCSV), F (GVF) and Red Globe (GRGV) have been detected in four South Australian vineyards using metagenomic high throughput sequencing for the first time Australia. Most of them were present asymptomatic grapevines some with leafroll disease that infected by several other leafro...

Pseudorecombinants made by exchanging the cloned, infectious genome components (DNAs A and B) of potato yellow mosaic geminivirus (PYMV) and the common strain (cs) of tomato golden mosaic geminivirus (csTGMV) are not infectious in their common host Nicotiana benthamiana. In an N. benthamiana leaf disc assay neither PYMV DNA A nor TGMV DNA A transreplicated each other's DNA B component. The abil...