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首页> 外文期刊>Journal of Biotechnology >Mating type-correlated molecular markers and demonstration of heterokaryosis in the phytopathogenic fungus Thanatephorus cucumeris (Rhizoctonia solani) AG 1-IC by AFLP DNA fingerprinting analysis
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Mating type-correlated molecular markers and demonstration of heterokaryosis in the phytopathogenic fungus Thanatephorus cucumeris (Rhizoctonia solani) AG 1-IC by AFLP DNA fingerprinting analysis

机译：AFLP DNA指纹分析技术在植物病原性黄瓜（Thanthanphorus solani）AG 1-IC植物中与交配类型相关的分子标记并证明其异核

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The destructive soilborne plant pathogenic basidiomycetous fungus Thanatephorus cucumeris is not a homogeneous species, but is composed of at least 12 anastomosis groups (AG), which seem to be genetically isolated. The genetics of several T. cucumeris anastomosis groups was studied by analysis of heterokaryotic tuft formation in the area of contact between homokaryotic single-spore isolates, revealing that AG 1 is heterokaryotic and bipolar. To prove that tuft formation is due to heterokaryosis, AFLP DNA fingerprinting was applied to a heterokaryotic T. cucumeris AG 1-IC isolate, its homokaryotic single spore-derived progeny, and newly formed heterokaryons. By means of AFLP markers, it is demonstrated that fluffy tufts formed upon pairing of homokaryons from different mating types are newly formed heterokaryons. Mating type-correlated markers have also been found, which will be useful for future studies of the genetics of this fungal species complex.
机译：具破坏性的土传植物病原性担子菌真菌丘脑（Thanthanphorus cucumeris）不是同质物种，而是由至少12个吻合组（AG）组成，它们似乎是遗传分离的。通过分析纯核单孢子分离株之间接触区域的异核簇状簇的形成，研究了几个黄瓜锥虫吻合组的遗传，发现AG 1是异核和双极的。为了证明簇的形成是由于异核生物引起的，将AFLP DNA指纹图谱应用到了一个异核黄瓜小球菌AG 1-IC分离株，其同核生物单孢子衍生的后代以及新形成的异核生物。通过AFLP标记，证明了来自不同交配类型的同核核对配对形成的蓬松簇是新形成的异核核。还发现了与交配类型相关的标记，这将有助于对该真菌物种复合体的遗传学进行进一步的研究。

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