DWARF TILLER1, a WUSCHEL-Related Homeobox Transcription Factor, Is Required for Tiller Growth in Rice

doi:10.1371/journal.pgen.1004154

	DWARF TILLER1, a WUSCHEL-Related Homeobox Transcription Factor, Is Required for Tiller Growth in Rice
	Wang, Wenfei 1,2; Li, Gang ; Zhao, Jun 1,2; Chu, Huangwei ; Lin, Wenhui 1; Zhang, Dabing ; Wang, Zhiyong 3; Liang, Wanqi
	2014
发表期刊	PLOS GENETICS
ISSN	1553-7390
卷号	10 期号:3
摘要	Unlike many wild grasses, domesticated rice cultivars have uniform culm height and panicle size among tillers and the main shoot, which is an important trait for grain yield. However, the genetic basis of this trait remains unknown. Here, we report that DWARF TILLER1 (DWT1) controls the developmental uniformity of the main shoot and tillers in rice (Oryza sativa). Most dwt1 mutant plants develop main shoots with normal height and larger panicles, but dwarf tillers bearing smaller panicles compared with those of the wild type. In addition, dwt1 tillers have shorter internodes with fewer and un-elongated cells compared with the wild type, indicating that DWT1 affects cell division and cell elongation. Map-based cloning revealed that DWT1 encodes a WUSCHEL-related homeobox (WOX) transcription factor homologous to the Arabidopsis WOX8 and WOX9. The DWT1 gene is highly expressed in young panicles, but undetectable in the internodes, suggesting that DWT1 expression is spatially or temporally separated from its effect on the internode growth. Transcriptomic analysis revealed altered expression of genes involved in cell division and cell elongation, cytokinin/gibberellin homeostasis and signaling in dwt1 shorter internodes. Moreover, the non-elongating internodes of dwt1 are insensitive to exogenous gibberellin (GA) treatment, and some of the slender rice1 (slr1) dwt1 double mutant exhibits defective internodes similar to the dwt1 single mutant, suggesting that the DWT1 activity in the internode elongation is directly or indirectly associated with GA signaling. This study reveals a genetic pathway synchronizing the development of tillers and the main shoot, and a new function of WOX genes in balancing branch growth in rice.
学科领域	Genetics & Heredity
DOI	10.1371/journal.pgen.1004154
收录类别	SCI
语种	英语
WOS关键词	CYCLIN-DEPENDENT KINASE ; ROOT-NODULE DEVELOPMENT ; DEEP-WATER RICE ; A-TYPE CYCLIN ; ARABIDOPSIS-THALIANA ; CYTOKININ BIOSYNTHESIS ; SEQUENCE ALIGNMENT ; PLANT DEVELOPMENT ; CELL-DIVISION ; GENE
WOS研究方向	Genetics & Heredity
WOS记录号	WOS:000337144700005
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
EISSN	1553-7404
资助机构	National Transgenic Major Program Grant [2009ZX08009-022B] ; National Key Basic Research Developments Program, Ministry of Science and Technology, China [2011CB100101] ; National Natural Science Foundation of China [31322040]
作者邮箱	wqliang@sjtu.edu.cn
作品OA属性	Green Published, Green Submitted, gold
引用统计	被引频次：55[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27379
专题	中科院植物分子生理学重点实验室
作者单位	1.Shanghai Jiao Tong Univ, Sch Life Sci & Biotechnol, State Key Lab Hybrid Rice, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China 4.Carnegie Inst Sci, Dept Plant Biol, Stanford, CA 94305 USA
推荐引用方式 GB/T 7714	Wang, Wenfei,Li, Gang,Zhao, Jun,et al. DWARF TILLER1, a WUSCHEL-Related Homeobox Transcription Factor, Is Required for Tiller Growth in Rice[J]. PLOS GENETICS,2014,10(3).
APA	Wang, Wenfei.,Li, Gang.,Zhao, Jun.,Chu, Huangwei.,Lin, Wenhui.,...&Liang, Wanqi.(2014).DWARF TILLER1, a WUSCHEL-Related Homeobox Transcription Factor, Is Required for Tiller Growth in Rice.PLOS GENETICS,10(3).
MLA	Wang, Wenfei,et al."DWARF TILLER1, a WUSCHEL-Related Homeobox Transcription Factor, Is Required for Tiller Growth in Rice".PLOS GENETICS 10.3(2014).

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