Potato yellow mosaic virus (PYMV) is one of the most important begomoviruses infecting tomatoes in the Caribbean basin. Viruses of this group are transmitted by whiteflies of the Bemisia tabaci cryptic species complex. Within this complex, the whitefly referred to as Middle East-Asia Minor 1 (MEAM1) is globally spread and recognised as a highly efficient begomovirus vector. This study reports the whole genome of a PYMV isolate infecting tomatoes in Táchira state, Venezuela. The DNA-A of this isolate shared the highest nucleotide identity (93.5%) with a PYMV isolate from Solanum americanum. The PYMV isolate described here revealed a putative recombination event involving PYMV and tomato chlorotic leaf distortion virus. Additionally, the PYMV transmission by the whitefly MEAM1 was evaluated. At 60 days post inoculation, the transmission efficiency was 83.6, 88.2 and 100% when using one, five and 20 adults per plants, respectively.

中文翻译：

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一种新型重组马铃薯黄花叶病毒株的烟粉虱载体基因组特征及传播效率

马铃薯黄花叶病毒 (PYMV) 是感染加勒比海地区西红柿的最重要的豆类病毒之一。该组的病毒由粉虱（Bemisia tabaci）隐匿种复合体的粉虱传播。在这个复合体中，被称为中东-小亚细亚 1 (MEAM1) 的粉虱在全球范围内传播并被公认为高效的 begomovirus 载体。这项研究报告了委内瑞拉塔奇拉州感染西红柿的 PYMV 分离株的全基因组。该分离株的 DNA-A 与来自美国茄属的 PYMV 分离株具有最高的核苷酸同一性 (93.5%)。此处描述的 PYMV 分离株揭示了涉及 PYMV 和番茄褪绿叶变形病毒的假定重组事件。此外，还评估了粉虱 MEAM1 的 PYMV 传输。在接种后 60 天，