Beuch Ulrike, Berlin Sofia, Åkerblom Jonas, Nicolaisen Mogens, Nielsen Steen Lykke, Crosslin James M, Hamm Philip B, Santala Johanna, Valkonen Jari P T, Kvarnheden Anders
Department of Plant Biology, Uppsala BioCenter, Linnean Center of Plant Biology in Uppsala, Swedish University of Agricultural Sciences, Box 7080, 750 07, Uppsala, Sweden.
Arch Virol. 2015 May;160(5):1345-51. doi: 10.1007/s00705-015-2381-7. Epub 2015 Mar 10.
Nearly complete sequences of RNA-CP and 3'-proximal RNA-TGB were determined for 43 samples of potato mop-top virus (PMTV) originating from potato tubers and field soil from Sweden, Denmark and the USA. The results showed limited diversity and no strict geographical grouping, suggesting only a few original introductions of PMTV from the Andes. Two distinguishable types of RNA-CP and RNA-TGB were found in the samples, but no specific combination of them correlated with spraing symptoms in tubers. Lack of positive selection in the coding sequences indicates that there is no specific molecular adaptation of PMTV to new vectors or hosts.
对来自瑞典、丹麦和美国的43份马铃薯帚顶病毒（PMTV）样本进行了RNA - CP和3'端近端RNA - TGB的几乎完整序列测定，这些样本源自马铃薯块茎和田间土壤。结果显示多样性有限且无严格的地理分组，表明PMTV仅从安第斯山脉有少数几次原始引入。在样本中发现了两种可区分的RNA - CP和RNA - TGB类型，但它们之间没有特定组合与块茎的线条症状相关。编码序列中缺乏正选择表明PMTV对新载体或宿主没有特定的分子适应性。
