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Fine mapping of a powdery mildew resistance gene PmLF540 from wild emmer wheat.

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Title: Fine mapping of a powdery mildew resistance gene PmLF540 from wild emmer wheat.
Authors: Liu, Ruishan1 (AUTHOR), Xu, Hongxing2 (AUTHOR), Yu, Ningning1 (AUTHOR), Zhang, Jiadong1 (AUTHOR), Li, Yaoxue1 (AUTHOR), Li, Jiatong1 (AUTHOR), Dai, Yintao1 (AUTHOR), Xiao, Bei1 (AUTHOR), Pan, Guantong1 (AUTHOR), Li, Dongming1 (AUTHOR), Jin, Yuli1 (AUTHOR) yulijin@ytu.edu.cn, Han, Guohao3 (AUTHOR) ghhan@ms.sjziam.ac.cn, Ma, Pengtao1 (AUTHOR) ptma@ytu.edu.cn
Source: Theoretical & Applied Genetics. Aug2025, Vol. 138 Issue 8, p1-14. 14p.
Abstract: In wheat production, powdery mildew displayed devastating power threatening grain yield and flour quality. To control this disease, utilization of resistance genes represents the most efficient and environmentally friendly strategy. The wild emmer wheat accession LF540 demonstrated high level of resistance against powdery mildew. Genetic analysis revealed that a single dominant gene, tentatively named PmLF540, conferred this resistance at the seedling stage. Employing bulked segregant exome capture sequencing and 2000 F2:3 families, PmLF540 was fine mapped to a 681.5-kb interval (Chr4A_712370609-Chr4A_713052118) based on the reference genome of wild emmer wheat v1.0 (accession Zavitan). Collinearity analysis indicated that this candidate interval has poor collinearity between different Triticum species, suggesting that PmLF540 was mapped to a complex genomic region. Expression pattern against both avirulent and virulent Bgt isolates and haplotype analysis of the candidate genes within this interval revealed TRIDC4AG068820, encoding a typical nucleotide-binding domain and leucine-rich repeat resistance protein, as the pivotal candidate gene for PmLF540. Fifteen closely linked markers and a gene-specific marker KASP540-1 for TRIDC4AG068820 were screened for facilitating the efficient transfer of PmLF540 in breeding practices. [ABSTRACT FROM AUTHOR]
Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Fine mapping of a powdery mildew resistance gene PmLF540 from wild emmer wheat.
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  Data: <searchLink fieldCode="JN" term="%22Theoretical+%26+Applied+Genetics%22">Theoretical & Applied Genetics</searchLink>. Aug2025, Vol. 138 Issue 8, p1-14. 14p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In wheat production, powdery mildew displayed devastating power threatening grain yield and flour quality. To control this disease, utilization of resistance genes represents the most efficient and environmentally friendly strategy. The wild emmer wheat accession LF540 demonstrated high level of resistance against powdery mildew. Genetic analysis revealed that a single dominant gene, tentatively named PmLF540, conferred this resistance at the seedling stage. Employing bulked segregant exome capture sequencing and 2000 F2:3 families, PmLF540 was fine mapped to a 681.5-kb interval (Chr4A_712370609-Chr4A_713052118) based on the reference genome of wild emmer wheat v1.0 (accession Zavitan). Collinearity analysis indicated that this candidate interval has poor collinearity between different Triticum species, suggesting that PmLF540 was mapped to a complex genomic region. Expression pattern against both avirulent and virulent Bgt isolates and haplotype analysis of the candidate genes within this interval revealed TRIDC4AG068820, encoding a typical nucleotide-binding domain and leucine-rich repeat resistance protein, as the pivotal candidate gene for PmLF540. Fifteen closely linked markers and a gene-specific marker KASP540-1 for TRIDC4AG068820 were screened for facilitating the efficient transfer of PmLF540 in breeding practices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Aug2025
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