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GhMYB52 Like: A Key Factor That Enhances Lint Yield by Negatively Regulating the Lignin Biosynthesis Pathway in Fibers of Upland Cotton (Gossypium hirsutum L.).
Yang, Yang; Zhou, Xue; Zhu, Xi; Ding, Bo; Jiang, Linzhu; Zhang, Huiming; Li, Silu; Cao, Shuyan; Zhang, Mi; Pei, Yan; Hou, Lei.
Afiliación
  • Yang Y; College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China.
  • Zhou X; Chongqing Key Laboratory of Application and Safety Control of Genetically Modified Crops, Southwest University, Chongqing 400715, China.
  • Zhu X; Laboratory Animal Center, Southwest University, Chongqing 400715, China.
  • Ding B; College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China.
  • Jiang L; Chongqing Key Laboratory of Application and Safety Control of Genetically Modified Crops, Southwest University, Chongqing 400715, China.
  • Zhang H; College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China.
  • Li S; Chongqing Key Laboratory of Application and Safety Control of Genetically Modified Crops, Southwest University, Chongqing 400715, China.
  • Cao S; College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China.
  • Zhang M; Chongqing Key Laboratory of Application and Safety Control of Genetically Modified Crops, Southwest University, Chongqing 400715, China.
  • Pei Y; College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China.
  • Hou L; Chongqing Key Laboratory of Application and Safety Control of Genetically Modified Crops, Southwest University, Chongqing 400715, China.
Int J Mol Sci ; 25(9)2024 Apr 30.
Article en En | MEDLINE | ID: mdl-38732136
ABSTRACT
In the context of sustainable agriculture and biomaterial development, understanding and enhancing plant secondary cell wall formation are crucial for improving crop fiber quality and biomass conversion efficiency. This is especially critical for economically important crops like upland cotton (Gossypium hirsutum L.), for which fiber quality and its processing properties are essential. Through comprehensive genome-wide screening and analysis of expression patterns, we identified a particularly high expression of an R2R3 MYB transcription factor, GhMYB52 Like, in the development of the secondary cell wall in cotton fiber cells. Utilizing gene-editing technology to generate a loss-of-function mutant to clarify the role of GhMYB52 Like, we revealed that GhMYB52 Like does not directly contribute to cellulose synthesis in cotton fibers but instead represses a subset of lignin biosynthesis genes, establishing it as a lignin biosynthesis inhibitor. Concurrently, a substantial decrease in the lint index, a critical measure of cotton yield, was noted in parallel with an elevation in lignin levels. This study not only deepens our understanding of the molecular mechanisms underlying cotton fiber development but also offers new perspectives for the molecular improvement of other economically important crops and the enhancement of biomass energy utilization.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Regulación de la Expresión Génica de las Plantas / Gossypium / Fibra de Algodón / Lignina Idioma: En Revista: Int J Mol Sci Año: 2024 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Regulación de la Expresión Génica de las Plantas / Gossypium / Fibra de Algodón / Lignina Idioma: En Revista: Int J Mol Sci Año: 2024 Tipo del documento: Article País de afiliación: China