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The F-box protein ZmFBL41 negatively regulates disease resistance to Rhizoctonia solani by degrading the abscisic acid synthase ZmNCED6 in maize.
Yang, Zhangshuai; Liang, Guanyu; Liu, Chenxu; Chu, Zhaohui; Li, Ning.
Afiliación
  • Yang Z; National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China.
  • Liang G; National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China.
  • Liu C; National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China.
  • Chu Z; State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China. zchu77@whu.edu.cn.
  • Li N; National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China. nli@sdau.edu.cn.
Plant Cell Rep ; 43(2): 48, 2024 Feb 01.
Article en En | MEDLINE | ID: mdl-38300347
ABSTRACT
KEY MESSAGE The maize F-box protein ZmFBL41 targets abscisic acid synthase 9-cis-epoxycarotenoid dioxygenase 6 for degradation, and this regulatory module is exploited by Rhizoctonia solani to promote infection. F-box proteins are crucial regulators of plant growth, development, and responses to abiotic and biotic stresses. Previous research identified the F-box gene ZmFBL41 as a negative regulator of maize (Zea mays) defenses against Rhizoctonia solani. However, the precise mechanisms by which F-box proteins mediate resistance to R. solani remain poorly understood. In this study, we show that ZmFBL41 interacts with an abscisic acid (ABA) synthase, 9-cis-epoxycarotenoid dioxygenase 6 (ZmNCED6), promoting its degradation via the ubiquitination pathway. We discovered that the ectopic overexpression of ZmNCED6 in rice (Oryza sativa) inhibited R. solani infection by activating stomatal closure, callose deposition, and jasmonic acid (JA) biosynthesis, indicating that ZmNCED6 enhances plant immunity against R. solani. Natural variation at ZmFBL41 across different maize haplotypes did not affect the ZmFBL41-ZmNCED6 interaction. These findings suggest that ZmFBL41 targets ZmNCED6 for degradation, leading to a decrease in ABA levels in maize, in turn, inhibiting ABA-mediated disease resistance pathways, such as stomatal closure, callose deposition, and JA biosynthesis, ultimately facilitating R. solani infection.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Rhizoctonia / Oryza / Proteínas F-Box Tipo de estudio: Prognostic_studies Idioma: En Revista: Plant Cell Rep Asunto de la revista: BOTANICA Año: 2024 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Rhizoctonia / Oryza / Proteínas F-Box Tipo de estudio: Prognostic_studies Idioma: En Revista: Plant Cell Rep Asunto de la revista: BOTANICA Año: 2024 Tipo del documento: Article País de afiliación: China