A Cotton BURP Domain Protein Interacts With -Expansin and Their Co-Expression Promotes Plant Growth and Fruit Production
文献类型: 外文期刊
作者: Xu, Bing 1 ; Gou, Jin-Ying 1 ; Li, Fu-Guang 1 ; Shangguan, Xiao-Xia 1 ; Zhao, Bo 1 ; Yang, Chang-Qing 1 ; Wang, Ling-Jian 1 ; Yuan, Sheng 1 ; Liu, Chang-Jun 1 ; Chen, Xiao-Ya 1 ;
作者机构: 1.National Key Laboratory of Plant Molecular Genetics and National Plant Gene Research Center, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
2.National Key Laboratory of Plant Molecular Genetics and National Plant Gene Research Center, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China;Department of Biology, Brookhaven National Laboratory, Upton, NY 11973, USA
3.National Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agriculture Sciences, Anyang 455000, China
4.Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China
5.Department of Biology, Brookhaven National Laboratory, Upton, NY 11973, USA
关键词: BURP protein;RD22-like;-expansin;cell wall;crop yield;fruiting;cotton fiber;biomass
期刊名称:MOLECULAR PLANT ( 影响因子:13.164; 五年影响因子:16.357 )
ISSN: 1674-2052
年卷期: 2013 年 6 卷 3 期
页码:
收录情况: SCI
摘要: Plant growth requires cell wall extension. The cotton AtRD22-Like 1 gene GhRDL1, predominately expressed in elongating fiber cells, encodes a BURP domain-containing protein. Here, we show that GhRDL1 is localized in cell wall and interacts with GhEXPA1, an -expansin functioning in wall loosening. Transgenic cotton overexpressing GhRDL1 showed an increase in fiber length and seed mass, and an enlargement of endopleura cells of ovules. Expression of either GhRDL1 or GhEXPA1 alone in Arabidopsis led to a substantial increase in seed size; interestingly, their co-expression resulted in the increased number of siliques, the nearly doubled seed mass, and the enhanced biomass production. Cotton plants overexpressing GhRDL1 and GhEXPA1 proteins produced strikingly more fruits (bolls), leading to up to 40% higher fiber yield per plant without adverse effects on fiber quality and vegetative growth. We demonstrate that engineering cell wall protein partners has a great potential in promoting plant growth and crop yield.
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