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<p>Common bean (<i>Phaseolus vulgaris</i>) anthracnose, caused by <i>Colletotrichum lindemuthianum</i> affects and decreases its yield substantially. Fifty Simple Sequence Repeat (SSR) markers were used to analyze the genetic and genotypic variation among 36 <i>C. lindemuthianum</i> isolates. Among the 50 SSRs, 24 were polymorphic and amplified 66 alleles. Most of the SSRs had polymorphic information content (PIC) values &gt; 0.30, indicating their strong discriminative competence. Distance based dendrogram analysis and population structure analysis divided 36 <i>C. lindemuthianum</i> isolates into three clusters. Analysis of molecular variance at spatiotemporal levels showed high genetic variation among the populations. The six <i>C. lindemuthianum</i> subpopulations had high Shannon-Wiener indices. The multilocus genotype and genetic diversity indices show that <i>C. lindemuthianum</i> populations in Kashmir are diverse. The three geographic subpopulations of <i>C. lindemuthianum</i> rejected the null hypothesis of linkage equilibrium (<i>p</i> = 0.001). Before this study, all PCR based genetic diversity studies on <i>C. lindemuthianum</i> relied on dominant markers. This study is the first to identify 24 robust SSRs, which can be utilized to elucidate the population structure of the common bean anthracnose pathogen.</p> Graphical Abstract <p></p>

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Microsatellite Markers Display High Diversity in Bean Anthracnose Pathogen Colletotrichum lindemuthianum in Kashmir

  • 期刊论文

  • 发表日期：

    2026年1月24日

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  • Tabia Fayaz,
  • Aasiya Nabi,
  • Naziya Nabi,
  • Irtifa Lateef,
  • Raja Junaid,
  • Qadrul Nisa,
  • Sehla Khursheed,
  • Adfar Bashir,
  • Zainab Rashid,
  • H. Itoo,
  • Rafiq A. Shah,
  • Saba Banday,
  • Sajad M. Zargar,
  • Imran Khan,
  • M. D. Shah,
  • Bilal A. Padder

摘要

Common bean (Phaseolus vulgaris) anthracnose, caused by Colletotrichum lindemuthianum affects and decreases its yield substantially. Fifty Simple Sequence Repeat (SSR) markers were used to analyze the genetic and genotypic variation among 36 C. lindemuthianum isolates. Among the 50 SSRs, 24 were polymorphic and amplified 66 alleles. Most of the SSRs had polymorphic information content (PIC) values > 0.30, indicating their strong discriminative competence. Distance based dendrogram analysis and population structure analysis divided 36 C. lindemuthianum isolates into three clusters. Analysis of molecular variance at spatiotemporal levels showed high genetic variation among the populations. The six C. lindemuthianum subpopulations had high Shannon-Wiener indices. The multilocus genotype and genetic diversity indices show that C. lindemuthianum populations in Kashmir are diverse. The three geographic subpopulations of C. lindemuthianum rejected the null hypothesis of linkage equilibrium (p = 0.001). Before this study, all PCR based genetic diversity studies on C. lindemuthianum relied on dominant markers. This study is the first to identify 24 robust SSRs, which can be utilized to elucidate the population structure of the common bean anthracnose pathogen.

Graphical Abstract