RPSR1, a major quantitative trait locus for Pythium stalk rot resistance in maize
Pythium stalk rot (PSR) is a destructive disease of maize, severely affecting yield and grain quality. The identification of quantitative trait loci (QTL) or genes for resistance to PSR forms the basis of disease-resistant hybrids breeding. In this study, a major QTL, Resistance to Pythium stalk rot...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-02-01
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| Series: | Crop Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514125000030 |
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| Summary: | Pythium stalk rot (PSR) is a destructive disease of maize, severely affecting yield and grain quality. The identification of quantitative trait loci (QTL) or genes for resistance to PSR forms the basis of disease-resistant hybrids breeding. In this study, a major QTL, Resistance to Pythium stalk rot 1 (RPSR1), was identified from a set of recombinant inbred lines derived from MS71 and POP. Using a recombinant progeny testing strategy, RPSR1 was fine-mapped in a 472 kb interval. Through candidate gene expression, gene knock-down and knock-out studies, a leucine-rich repeat receptor-like kinase gene, PEP RECEPTOR 2 (ZmPEPR2), was assigned as a PSR resistance gene. These results provide insights into the genetic architecture of resistance to PSR in maize, which should facilitate breeding maize for resistance to stalk rot. |
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| ISSN: | 2214-5141 |