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THE MOLECULAR EVOLUTION OF THE RICE BLAST RESISTANCE GENE Pi36

机译：稻瘟病抗性基因Pi36的分子进化

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摘要

The single-locus rice blast resistance gene Pi36 is of the coiled-coil NBS-LRR (nucleotide binding site-leucine-rich repeat) type. We have investigated its evolution by resequencing a set of haplotypes (six ssp. indica and four ssp. japonica cultivars and three wild rice accessions) both within and outside the gene's coding region. It was found that the average nucleotide diversity was ～4.5%, characteristic of an intermediately diversified pattern. The K_a/K_s ratio and Tajima's D test were used to show that the gene's evolution reflects a mixture of purifying and balancing selection. In all, 186 significant gene conversion events were identified across the full coding region, suggesting that gene conversion has also been an important driver of sequence diversification.
机译：单基因座稻瘟病抗性基因Pi36是卷曲螺旋NBS-LRR（核苷酸结合位点-富含亮氨酸的重复序列）类型的。我们已经通过在基因编码区之内和之外对一组单倍型（六个印度sp和四个日本粳稻品种和三个野生稻种）进行重新测序研究了其进化。结果发现，平均核苷酸多样性为〜4.5％，具有中等程度的多样性。 K_a / K_s比和Tajima的D检验表明该基因的进化反映了纯化和平衡选择的混合。在整个编码区中共鉴定出186个重要的基因转化事件，这表明基因转化也已成为序列多样化的重要驱动力。

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  • 来源
    《International journal of plant sciences》 |2010年第3期|p.235-243|共9页
  • 作者

    Xin-Qiong Liu; Ling Wang; Xiang-Dong Liu; Xue-Qun Liu; De-Bin Wang; Chun-Tai Wang; Fei Lin; Qing-Hua Pan;

  • 作者单位

    Key Biotechnology Laboratory of the State Ethnic Affairs Commission, College of Life Science, South-Central University for Nationalities, Wuhan 430074, China;

    Laboratory of Plant Resistance and Genetics, College of Resources and Environmental Sciences, South China Agricultural University, Guangzhou 510642, China;

    College of Agriculture, South China Agricultural University, Guangzhou 510642, China;

    Key Biotechnology Laboratory of the State Ethnic Affairs Commission, College of Life Science, South-Central University for Nationalities, Wuhan 430074, China;

    Key Biotechnology Laboratory of the State Ethnic Affairs Commission, College of Life Science, South-Central University for Nationalities, Wuhan 430074, China;

    Key Biotechnology Laboratory of the State Ethnic Affairs Commission, College of Life Science, South-Central University for Nationalities, Wuhan 430074, China;

    Laboratory of Plant Resistance and Genetics, College of Resources and Environmental Sciences, South China Agricultural University, Guangzhou 510642, China;

    Laboratory of Plant Resistance and Genetics, College of Resources and Environmental Sciences, South China Agricultural University, Guangzhou 510642, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Pi36; genomic dynamics; molecular evolutionary; gene conversion;

    机译：Pi36;基因组动力学分子进化基因转换;
  • 入库时间 2022-08-18 03:45:40

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