Document Detail

A Cotton BURP Domain Protein Interacts With α-Expansin and Their Co-Expression Promotes Plant Growth and Fruit Production.
MedLine Citation:
PMID:  23041940     Owner:  NLM     Status:  Publisher    
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 α-expansin functioning in wall loosening. Transgenic cotton over-expressing GhRDL1 showed an increase of 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 over-expressing 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.
Bing Xu; Jin-Ying Gou; Fu-Guang Li; Xiao-Xia Shangguan; Bo Zhao; Chang-Qing Yang; Ling-Jian Wang; Sheng Yuan; Chang-Jun Liu; Xiao-Ya Chen
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-6
Journal Detail:
Title:  Molecular plant     Volume:  -     ISSN:  1752-9867     ISO Abbreviation:  Mol Plant     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101465514     Medline TA:  Mol Plant     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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.
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