| an unusual alphasatellite associated with monopartite begomoviruses attenuates symptoms and reduces betasatellite accumulation. | the oman strain of tomato yellow leaf curl virus (tylcv-om) and its associated betasatellite, an isolate of tomato leaf curl betasatellite (tolcb), were previously reported from oman. here we report the isolation of a second, previously undescribed, begomovirus [tomato leaf curl oman virus (tolcomv)] and an alphasatellite from that same plant sample. this alphasatellite is closely related (90 % shared nucleotide identity) to an unusual dna-2-type ageratum yellow vein singapore alphasatellite (ay ... | 2010 | 21084498 |