Enhanced Sucrose Loading Improves Rice Yield by Increasing Grain Size

doi:10.1104/pp.15.01170

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	Enhanced Sucrose Loading Improves Rice Yield by Increasing Grain Size
	Wang, Liang; Lu, Qingtao; Wen, Xiaogang; Lu, Congming
	2015
发表期刊	PLANT PHYSIOLOGY
ISSN	0032-0889
卷号	169 期号:4 页码:2848-2862
摘要	Yield in cereals is a function of grain number and size. Sucrose (Suc), the main carbohydrate product of photosynthesis in higher plants, is transported long distances from source leaves to sink organs such as seeds and roots. Here, we report that transgenic rice plants (Oryza sativa) expressing the Arabidopsis (Arabidopsis thaliana) phloem-specific Suc transporter (AtSUC2), which loads Suc into the phloem under control of the phloem protein2 promoter (pPP2), showed an increase in grain yield of up to 16% relative to wild-type plants in field trials. Compared with wild-type plants, pPP2::AtSUC2 plants had larger spikelet hulls and larger and heavier grains. Grain filling was accelerated in the transgenic plants, and more photoassimilate was transported from the leaves to the grain. In addition, microarray analyses revealed that carbohydrate, amino acid, and lipid metabolism was enhanced in the leaves and grain of pPP2::AtSUC2 plants. Thus, enhancing Suc loading represents a promising strategy to improve rice yield to feed the global population.
学科领域	Plant Sciences
DOI	10.1104/pp.15.01170
收录类别	SCI
语种	英语
WOS关键词	ADP-GLUCOSE PYROPHOSPHORYLASE ; VASCULAR BUNDLES ; TRANSPORTER GENE ; SEED YIELD ; PROTEIN ; EXPRESSION ; OSSUT1 ; CARBON ; STARCH ; GROWTH
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000368472700036
出版者	AMER SOC PLANT BIOLOGISTS
文献子类	Article
出版地	ROCKVILLE
EISSN	1532-2548
资助机构	State Key Basic Research and Development Plan of China [2015CB150105] ; Ministry of Agriculture of China [2014ZX08009-003-005]
作者邮箱	lucm@ibcas.ac.cn
作品OA属性	Green Published, Bronze
引用统计	被引频次：85[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/2S10CLM1/25741
专题	中科院光生物学重点实验室
作者单位	Chinese Acad Sci, Inst Bot, Photosynth Res Ctr, Key Lab Photobiol, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Wang, Liang,Lu, Qingtao,Wen, Xiaogang,et al. Enhanced Sucrose Loading Improves Rice Yield by Increasing Grain Size[J]. PLANT PHYSIOLOGY,2015,169(4):2848-2862.
APA	Wang, Liang,Lu, Qingtao,Wen, Xiaogang,&Lu, Congming.(2015).Enhanced Sucrose Loading Improves Rice Yield by Increasing Grain Size.PLANT PHYSIOLOGY,169(4),2848-2862.
MLA	Wang, Liang,et al."Enhanced Sucrose Loading Improves Rice Yield by Increasing Grain Size".PLANT PHYSIOLOGY 169.4(2015):2848-2862.

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