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<p>Septoria tritici blotch (STB), caused by the Dothideomycete fungus <i>Zymoseptoria tritici</i>, is one of the most damaging diseases of bread wheat (<i>Triticum aestivum</i>)<sup><CitationRef CitationID="CR1">1</CitationRef></sup> and the target of costly fungicide applications<sup><CitationRef CitationID="CR2">2</CitationRef></sup>. In line with the fungus’s apoplastic lifestyle, STB resistance genes isolated to date encode receptor-like kinases (RLKs) including a wall-associated kinase (<i>Stb6</i>) and a cysteine-rich kinase (<i>Stb16q</i>)<sup><CitationRef CitationID="CR3">3</CitationRef>,<CitationRef CitationID="CR4">4</CitationRef></sup>. Here we used genome-wide association studies on a diverse panel of 300 whole-genome shotgun-sequenced wheat landraces (WatSeq consortium<sup><CitationRef CitationID="CR5">5</CitationRef></sup>) to identify a 99-kb region containing six candidates for the <i>Stb15</i> resistance gene. Mutagenesis and transgenesis confirmed a gene encoding an intronless G-type lectin RLK as <i>Stb15</i>. The characterization of <i>Stb15</i> exemplifies the unexpected diversity of RLKs conferring <i>Z. tritici</i> resistance in wheat.</p>

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Septoria tritici blotch resistance gene Stb15 encodes a lectin receptor-like kinase

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月14日

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  • Amber N. Hafeez,
  • Laetitia Chartrain,
  • Cong Feng,
  • Florence Cambon,
  • Martha Clarke,
  • Simon Griffiths,
  • Sadiye Hayta,
  • Mei Jiang,
  • Beat Keller,
  • Rachel Kirby,
  • Markus C. Kolodziej,
  • Oliver R. Powell,
  • Mark A. Smedley,
  • Burkhard Steuernagel,
  • Wenfei Xian,
  • Luzie U. Wingen,
  • Shifeng Cheng,
  • Cyrille Saintenac,
  • Brande B. H. Wulff,
  • James K. M. Brown

摘要

Septoria tritici blotch (STB), caused by the Dothideomycete fungus Zymoseptoria tritici, is one of the most damaging diseases of bread wheat (Triticum aestivum)1 and the target of costly fungicide applications2. In line with the fungus’s apoplastic lifestyle, STB resistance genes isolated to date encode receptor-like kinases (RLKs) including a wall-associated kinase (Stb6) and a cysteine-rich kinase (Stb16q)3,4. Here we used genome-wide association studies on a diverse panel of 300 whole-genome shotgun-sequenced wheat landraces (WatSeq consortium5) to identify a 99-kb region containing six candidates for the Stb15 resistance gene. Mutagenesis and transgenesis confirmed a gene encoding an intronless G-type lectin RLK as Stb15. The characterization of Stb15 exemplifies the unexpected diversity of RLKs conferring Z. tritici resistance in wheat.