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Epigenetic regulation of antagonistic receptors confers rice blast resistance with yield balance.

Deng Yi-Wen, Zhai Keran, Xie Zhen, Yang Dongyong, Zhu Xu-Dong, Liu Junzhong, Wang Xin, Qin Peng, Yang Yuanzhu, Zhang Guomin, Li Qun, Zhang Jianfu, Wu Shuangqing, Milazzo Joëlle, Mao Bizeng, Wang Ertao, Xie Huaan, Tharreau Didier, He Zuhua. 2017. Epigenetic regulation of antagonistic receptors confers rice blast resistance with yield balance.. Science, 355 (6328) : pp. 962-965.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Outlier, Sujet : MULTIDISCIPLINARY SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Anthropologie-Ethnologie; Economie-gestion; Psychologie-éthologie-ergonomie; Sociologie-démographie

Abstract : Crop breeding aims to balance disease resistance with yield, however single resistance (R) genes can lead to resistance breakdown and R gene pyramiding may impact growth fitness. Here we report that the rice Pigm locus contains a cluster of genes encoding nucleotide-binding leucine-rich repeat (NLR) receptors that confer durable resistance to the fungus Magnaporthe oryzae without yield penalty. In the cluster, PigmR confers broad-spectrum resistance, whereas PigmS competitively attenuates PigmR homodimerization to suppress resistance. PigmS expression, and thus PigmR-mediated resistance, are subjected to tight epigenetic regulation. PigmS increases seed production to counteract the yield cost induced by PigmR. Therefore, our study reveals a mechanism balancing high disease resistance and yield through epigenetic regulation of paired antagonistic NLRs, providing a tool to develop elite crop varieties. (Résumé d'auteur)

Mots-clés Agrovoc : Oryza sativa, Magnaporthe, mécanisme de défense, Résistance aux maladies, Résistance génétique, Rendement des cultures, Leucine, Génétique, Amélioration des plantes

Mots-clés complémentaires : Épigénétique, Magnaporthe oryzae, Oryza sativa indica, Oryza sativa japonica

Classification Agris : F30 - Plant genetics and breeding
H20 - Plant diseases

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Deng Yi-Wen, CNRRI (CHN)
  • Zhai Keran, Chinese Academy of Sciences (CHN)
  • Xie Zhen, Zhejiang University (CHN)
  • Yang Dongyong, Chinese Academy of Sciences (CHN)
  • Zhu Xu-Dong, CNRRI (CHN)
  • Liu Junzhong, Chinese Academy of Sciences (CHN)
  • Wang Xin, Chinese Academy of Sciences (CHN)
  • Qin Peng, Yahua Seeds Science Academy of Hunan (CHN)
  • Yang Yuanzhu, Yahua Seeds Science Academy of Hunan (CHN)
  • Zhang Guomin, HAAS (CHN)
  • Li Qun, Chinese Academy of Sciences (CHN)
  • Zhang Jianfu, Fujian Agricultural College (CHN)
  • Wu Shuangqing, Academy of Agricultural Sciences (CHN)
  • Milazzo Joëlle, CIRAD-BIOS-UMR BGPI (FRA)
  • Mao Bizeng, Zhejiang University (CHN)
  • Wang Ertao, Chinese Academy of Sciences (CHN)
  • Xie Huaan, Fujan Agricultural College (CHN)
  • Tharreau Didier, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0003-3961-6120
  • He Zuhua, Chinese Academy of Sciences (CHN)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/583385/)

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