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首页> 外文期刊>Plant Pathology >Population differentiation in the banana leaf spot pathogen Mycosphaerella musicola,examined at a global scale
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Population differentiation in the banana leaf spot pathogen Mycosphaerella musicola,examined at a global scale

机译：全球范围内检查的香蕉叶斑病病原菌Mycosphaerella musicola的种群分化

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Single-copy restriction fragment length polymorphism (RFLP)markers were used to determine the genetic structure of the global population of Mycosphaerella musicola,the cause of sigatoka (yelow Sigatoka) disease of banana.The isolates of M.musicola examined were grouped into four geographic populations representing Africa,Latin America and the Caribbean,Australia and Indonesia.Moderate levels of genetic diversity were observed for most of the populations (H=0centre dot22-0centre dot44).The greatest genetic diversity was found in the Indonesian Population (H=0centre dot44).Genotypic diversity was close to 50% in all populations.Population differentiation tests showed that the geographic populations of Africa,Latin America and the Caribbean,Australia and Indonesia were genetically differetn populations.Using F_ST tests,very high levels of genetic differentiatin were detected between all the population pairs (F_ST>0centre dot40),with the exception of the Africa adn Latin America-Caribbean population pair.These two propulations differed by only 3% (F_ST=0centre dot03),and were signifcantly different (P<0centre dot05)from all other populatin paiars.The hihg level of genetic diversity detected in Indonesia in comparison ot the other populations provides some support for the theory that M.musicola originated in South-east Asia and that M.musicola populations in other regions were founded by isolates from the South-east Asian region.The results also suggest the migration of M.musicola between Africa and the Latin America-Caribbean region.
机译：使用单拷贝限制性片段长度多态性（RFLP）标记来确定全球曲霉支原体的遗传结构，这是香蕉香蕉致病性的原因。将分离的M.musicola分为四个地理区域代表非洲，拉丁美洲和加勒比，澳大利亚和印度尼西亚的种群。大多数种群的遗传多样性水平中等（H = 0中心点22-0中心点44）。最大的遗传多样性在印度尼西亚人口中（H = 0中心）点44）。所有种群的基因型多样性接近50％。人口分化测试表明，非洲，拉丁美洲和加勒比海，澳大利亚和印度尼西亚的地理种群具有遗传差异。使用F_ST检验，遗传分化水平很高在所有人口对之间检测到（F_ST> 0centdot 40），但非洲和拉丁美洲-加勒比海除外这两个种群与所有其他平民种群之间的差异仅3％（F_ST = 0中心点03），并且差异显着（P <0中心点05）。在印度尼西亚检测到的遗传多样性的高水平与其他种群相比有人支持M.musicola起源于东南亚，其他地区的M.musicola种群是由东南亚地区的分离物建立的。拉丁美洲-加勒比地区。

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