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Overexpression of MsDREB1C Modulates Growth and Improves Forage Quality in Tetraploid Alfalfa (Medicago sativa L.).
Zhang, Yangyang; Wang, Zhen; Zhang, Fan; Wang, Xue; Li, Yajing; Long, Ruicai; Li, Mingna; Li, Xianyang; Wang, Quanzhen; Yang, Qingchuan; Kang, Junmei.
Afiliación
  • Zhang Y; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
  • Wang Z; College of Grassland Agriculture, Northwest A&F University, Yangling 712100, China.
  • Zhang F; Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
  • Wang X; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
  • Li Y; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
  • Long R; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
  • Li M; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
  • Li X; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
  • Wang Q; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
  • Yang Q; College of Grassland Agriculture, Northwest A&F University, Yangling 712100, China.
  • Kang J; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Plants (Basel) ; 13(9)2024 Apr 29.
Article en En | MEDLINE | ID: mdl-38732451
ABSTRACT
DREB has been reported to be involved in plant growth and response to environmental factors. However, the function of DREB in growth and development has not been elucidated in alfalfa (Medicago sativa L.), a perennial tetraploid forage cultivated worldwide. In this study, an ortholog of MtDREB1C was characterized from alfalfa and named MsDREB1C accordingly. MsDREB1C was significantly induced by abiotic stress. The transcription factor MsDREB1C resided in the nucleus and had self-transactivation activity. The MsDREB1C overexpression (OE) alfalfa displayed growth retardation under both long-day and short-day conditions, which was supported by decreased MsGA20ox and upregulated MsGA2ox in the OE lines. Consistently, a decrease in active gibberellin (GA) was detected, suggesting a negative effect of MsDREB1C on GA accumulation in alfalfa. Interestingly, the forage quality of the OE lines was better than that of WT lines, with higher crude protein and lower lignin content, which was supported by an increase in the leaf-stem ratio (LSR) and repression of several lignin-synthesis genes (MsNST, MsPAL1, MsC4H, and Ms4CL). Therefore, this study revealed the effects of MsDREB1C overexpression on growth and forage quality via modifying GA accumulation and lignin synthesis, respectively. Our findings provide a valuable candidate for improving the critical agronomic traits of alfalfa, such as overwintering and feeding value of the forage.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza