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Characterization of DNA polymorphisms in Rhizopogon roseolus homeodomain protein genes and their utilization for strain identification

机译:蔷薇根结节同源域蛋白基因中DNA多态性的表征及其在菌株鉴定中的应用

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摘要

We sequenced and characterized the genes for homeodomain proteins (RrA1-hox1, RrA1-hox2) and the flanking mip gene in a bipolar ectomycorrhizal basidiomycete, Rhizopogon roseolus. The sequenced region mapped to the A mating type locus. By nucleotide alignment of partial nucleotide sequences of two Rrhox1 genes from two mating compatible monokaryotic strains, we deduced that the 3′-region of Rrhox1 gene sequences in R. roseolus has a divergence-homogenization duality, which makes restriction fragment length polymorphism (RFLP) analysis of this region possible. Using a primer pair designed according to the 3′-regions of the RrA1-hox1 and mip genes in the A1 mating type, target PCR products were amplified from ten dikaryotic strains of R. roseolus collected from nine prefectures in Japan. RFLP patterns obtained using AluI and RsaI allowed distinguishing of all ten R. roseolus strains, indicating that the 3′-regions of Rrhox1 and mip are suitable for strain identification.
机译:我们对同源结构域蛋白(RrA1-hox1,RrA1-hox2)和侧翼mip基因的基因进行了测序和鉴定,该基因位于双极的根除菌根担子菌,Rhozopogon roseolus中。映射到A交配型基因座的序列区域。通过对来自两个交配的兼容单核菌株的两个Rrhox1基因的部分核苷酸序列进行核苷酸比对,我们推论玫瑰迷迭香中Rrhox1基因序列的3'-区域具有发散-均质对偶性,这使得限制性片段长度多态性(RFLP)分析该区域是可能的。使用根据RrA1-hox1的3'-区域和A1交配型的mip基因设计的引物对,从日本九个县收集的十个玫瑰果双核菌株中扩增出目标PCR产物。使用AluI和RsaI获得的RFLP图谱可以区分所有十个玫瑰蔷薇菌株,表明Rrhox1和mip的3'-区域适合菌株鉴定。

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