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	Composition, variation, expression and evolution of low-molecular-weight glutenin subunit genes in triticum urartu
	Luo,Guangbin1,2; Zhang,Xiaofei1,4; Zhang,Yanlin3; Yang,Wenlong1; Li,Yiwen1; Sun,Jiazhu1; Zhan,Kehui3; Zhang,Aimin1,3; Liu,Dongcheng1
刊名	Bmc plant biology
	2015-02-28
卷号	15期号:1
关键词	Low-molecular-weight glutenin subunits Triticum urartu Glu-a3 Proteomics Evolution
ISSN号	1471-2229
DOI	10.1186/s12870-014-0322-3
通讯作者	Zhang,aimin(amzhang@genetics.ac.cn) ; Liu,dongcheng(dcliu@genetics.ac.cn)
英文摘要	Abstractbackgroundwheat (aabbdd, 2n?=?6x?=?42) is a major dietary component for many populations across the world. bread-making quality of wheat is mainly determined by glutenin subunits, but it remains challenging to elucidate the composition and variation of low-molecular-weight glutenin subunits (lmw-gs) genes, the major components for glutenin subunits in hexaploid wheat. this problem, however, can be greatly simplified by characterizing the lmw-gs genes in triticum urartu, the a-genome donor of hexaploid wheat. in the present study, we exploited the high-throughput molecular marker system, gene cloning, proteomic methods and molecular evolutionary genetic analysis to reveal the composition, variation, expression and evolution of lmw-gs genes in a t. urartu population from the fertile crescent region.resultseight lmw-gs genes, including four m-type, one s-type and three i-type, were characterized in the t. urartu population. six or seven genes, the highest number at the glu-a3 locus, were detected in each accession. three i-type genes, each containing more than six allelic variants, were tightly linked because of their co-segregation in every accession. only 2-3 allelic variants were detected for each m- and s-type gene. the m-type gene, tua3-385, for which homologs were previously characterized only at glu-d3 locus in common wheat and aegilops tauschii, was detected at glu-a3 locus in t. urartu. tua3-460 was the first s-type gene identified at glu-a3 locus. proteomic analysis showed 1-4 genes, mainly i-type, expressed in individual accessions. about 62% accessions had three active i-type genes, rather than one or two in common wheat. southeastern turkey might be the center of origin and diversity for t. urartu due to its abundance of lmw-gs genes/genotypes. phylogenetic reconstruction demonstrated that the characterized t. urartu might be the direct donor of the glu-a3 locus in common wheat varieties.conclusionscompared with the glu-a3 locus in common wheat, a large number of highly diverse lmw-gs genes and active genes were characterized in t. urartu, demonstrating that this progenitor might provide valuable genetic resources for lmw-gs genes to improve the quality of common wheat. the phylogenetic analysis provided molecular evidence and confirmed that t. urartu was the a-genome donor of hexaploid wheat.
语种	英语
出版者	BioMed Central
WOS记录号	BMC:10.1186/S12870-014-0322-3
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374312
专题	中国科学院大学
通讯作者	Zhang,Aimin; Liu,Dongcheng
作者单位	1.Institute of Genetics and Developmental Biology, Chinese Academy of Sciences; State Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research 2.University of Chinese Academy of Sciences 3.Henan Agricultural University; College of Agronomy, The Collaborative Innovation Center of Grain Crops in Henan 4.University of Minnesota; Present address: Department of Agronomy & Plant Genetics
推荐引用方式 GB/T 7714	Luo,Guangbin,Zhang,Xiaofei,Zhang,Yanlin,et al. Composition, variation, expression and evolution of low-molecular-weight glutenin subunit genes in triticum urartu[J]. Bmc plant biology,2015,15(1).
APA	Luo,Guangbin.,Zhang,Xiaofei.,Zhang,Yanlin.,Yang,Wenlong.,Li,Yiwen.,...&Liu,Dongcheng.(2015).Composition, variation, expression and evolution of low-molecular-weight glutenin subunit genes in triticum urartu.Bmc plant biology,15(1).
MLA	Luo,Guangbin,et al."Composition, variation, expression and evolution of low-molecular-weight glutenin subunit genes in triticum urartu".Bmc plant biology 15.1(2015).

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