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	Proteomic profiling of rice embryos from a hybrid rice cultivar and its parental lines
	Wang, Weiwei1,2; Meng, Bo1,2,3; Ge, Xiaomeng1,2; Song, Shuhui1,2; Yang, Yue1,2; Yu, Xiaomin1,2; Wang, Liguo1,2; Hu, Songnian1; Liu, Siqi1,3; Yu, Jun1
刊名	Proteomics
	2008-11-01
卷号	8期号:22页码:4808-4821
关键词	Embryo Est Heterosis Regulatory element Super-hybrid rice
ISSN号	1615-9853
DOI	10.1002/pmic.200701164
通讯作者	Yu, jun(junyu@big.ac.cn)
英文摘要	Elite rice hybrids, when compared to their parental lines, exhibit increased yield and other favorable agronomical traits, such as pathogen- and water-stress resistances, which are described as heterosis, and the molecular mechanism of heterosis remains to be elucidated. since genomic sequences of the paternal (9311) and maternal lines (p64s) of a major rice hybrid variety lyp9 (liang-you-pei-jiu) were acquired recently, we performed a proteomic study on mature embryos of this hybrid triad based on 2-de and maldi-tof ms analyses, and identified 54 differentially expressed proteins involved in major biological processes including nutrient reservoir, response to stress, and metabolism. we observed that most of the storage proteins exhibit overdominance and stress-induced proteins display additivity. we compared proteomic results with transcriptomic data generated from the same embryo samples and found 28 candidate heterosis-associated genes shared by the two datasets. we further traced back to their genomic structures including protein-coding and regulatory regions and found that most of these genes have multiple copies in rice genomes as paralogous genes. based on alignment of coding and regulation regions, we found that most of the differentially expressed genes at both protein and rna levels are recent gene duplicates (paralogous genes) with relative little difference in protein-coding regions between orthologous genes (between genes of the two parental genomes) as compared to regulatory regions that harbor numerous indels and base substitutions.
WOS关键词	ORYZA-SATIVA L. ; OVERDOMINANT EPISTATIC LOCI ; PROBENAZOLE-INDUCIBLE GENE ; QUANTITATIVE TRAIT LOCI ; INBREEDING DEPRESSION ; YOUNG SEEDLINGS ; STORAGE PROTEIN ; MAIZE HYBRID ; GRAIN-YIELD ; SALT STRESS
WOS研究方向	Biochemistry & Molecular Biology
WOS类目	Biochemical Research Methods ; Biochemistry & Molecular Biology
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000261380300019
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2390081
专题	中国科学院大学
通讯作者	Yu, Jun
作者单位	1.Chinese Acad Sci, Beijing Inst Genom, CAS Key Lab Genome Sci & Informat, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100029, Peoples R China 3.Beijing Proteom Inst, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weiwei,Meng, Bo,Ge, Xiaomeng,et al. Proteomic profiling of rice embryos from a hybrid rice cultivar and its parental lines[J]. Proteomics,2008,8(22):4808-4821.
APA	Wang, Weiwei.,Meng, Bo.,Ge, Xiaomeng.,Song, Shuhui.,Yang, Yue.,...&Yu, Jun.(2008).Proteomic profiling of rice embryos from a hybrid rice cultivar and its parental lines.Proteomics,8(22),4808-4821.
MLA	Wang, Weiwei,et al."Proteomic profiling of rice embryos from a hybrid rice cultivar and its parental lines".Proteomics 8.22(2008):4808-4821.

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