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論文資訊
- 類型：已發表論文
- 日期：2013-06-20
摘要
Citrus tristeza 病毒 (CTV) outbreaks were detected in Sicily island, Italy for the first time in 2002. To gain insight into the 演化ary forces driving the 湧現 and phylogeography of these CTV 族群s, we determined and analyzed the nucleotide sequences of the p20 gene from 108 CTV isolates collected from 2002 to 2009. 貝氏 系統發育 analysis revealed that mild and severe CTV isolates belonging to five different clades (lineages) were introduced in Sicily in 2002. Phylogeographic analysis showed that four lineages co-circulated in the main citrus growing area located in Eastern Sicily. However, only one lineage (composed of mild isolates) spread to distant areas of Sicily and was detected after 2007. No correlation was found between 遺傳 variation and citrus host, indicating that citrus cultivars did not exer
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