Nemchinov Lev G, Grinstead Samuel
USDA/ARS, Beltsville Agricultural Research Center, Molecular Plant Pathology Laboratory, Beltsville, MD 20705.
USDA/ARS, Beltsville Agricultural Research Center, National Germplasm Resources Laboratory, Beltsville, MD 20705.
Plant Dis. 2020 Dec;104(12):3115-3117. doi: 10.1094/PDIS-04-20-0906-SC. Epub 2020 Oct 15.
Recently, alfalfa virus S (AVS), a new species in the family , was identified in alfalfa samples originating from Sudan, northern Africa. Here, we report on the identification and complete genomic sequence of an AVS isolate found in 7-day-old seedlings grown from alfalfa seeds acquired from China. The Chinese isolate of AVS differed in its nucleotide sequence from the Sudanese isolate by 8.6%. The detection of AVS in alfalfa seedlings developed from the germinated seeds may indicate a potential role of seed transmission in the distribution of this virus. The results obtained suggest that AVS may be far more widespread than previously thought.
最近，在源自北非苏丹的苜蓿样本中发现了苜蓿病毒S（AVS），它是该科的一个新物种。在此，我们报告了从中国获取的苜蓿种子培育出的7日龄幼苗中发现的一株AVS分离株的鉴定结果和完整基因组序列。AVS的中国分离株与苏丹分离株的核苷酸序列存在8.6%的差异。在由发芽种子培育出的苜蓿幼苗中检测到AVS，这可能表明种子传播在该病毒传播中具有潜在作用。所得结果表明，AVS的分布可能比之前认为的更为广泛。
