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論文資訊
- 類型：已發表論文
- 日期：2013-06-26
摘要
The 遺傳 variability of a Cucurbit aphid-borne yellows 病毒 (CABYV) (genus Polero病毒, family Luteoviridae) 族群 was evaluated by determining the nucleotide sequences of two genomic regions of CABYV isolates collected in open-field melon and squash crops during three consecutive years in Murcia (southeastern Spain). A 系統發育 analysis showed the existence of two major clades. The sequences did not cluster according to host, year, or locality of collection, and nucleotide similarities among isolates were 97 to 100 and 94 to 97% within and between clades, respectively. The ratio of nonsynonymous to synonymous nucleotide substitutions reflected that all open reading frames have been under purifying selection. Estimates of the 族群's 遺傳 多樣性 were of the same magnitude as those previously reported for other
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