Phytohormones signaling and crosstalk regulating leaf angle in rice

详细信息    查看全文

• 作者：Xiangyu Luo ; Jingsheng Zheng ; Rongyu Huang ; Yumin Huang ; Houcong Wang…
• 关键词：Rice ; Oryza sativa L. ; Leaf angle ; Phytohormones ; Crosstalk
• 刊名：Plant Cell Reports
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：35
• 期：12
• 页码：2423-2433
• 全文大小：1,031 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Cell Biology
  Plant Sciences
  Biotechnology
  Plant Biochemistry
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-203X
• 卷排序：35

文摘

Leaf angle is an important agronomic trait in rice (Oryza sativa L.). It affects both the efficiency of sunlight capture and nitrogen reservoirs. The erect leaf phenotype is suited for high-density planting and thus increasing crop yields. Many genes regulate leaf angle by affecting leaf structure, such as the lamina joint, mechanical tissues, and the midrib. Signaling of brassinosteroids (BR), auxin (IAA), and gibberellins (GA) plays important roles in the regulation of lamina joint bending in rice. In addition, the biosynthesis and signaling of BR are known to have dominant effects on leaf angle development. In this review, we summarize the factors and genes associated with the development of leaf angle in rice, outline the regulatory mechanisms based on the signaling of BR, IAA, and GA, and discuss the contribution of crosstalk between BR and IAA or GA in the formation of leaf angle. Promising lines of research in the transgenic engineering of rice leaf angle to increase grain yield are proposed.