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	Population-genetic analysis of HvABCG31 promoter sequence in wild barley (Hordeum vulgare ssp. spontaneum)
	Ma,Xiaoying1,2; Sela,Hanan3; Jiao,Genlin2; Li,Chao1; Wang,Aidong1; Pourkheirandish,Mohammad4; Weiner,Dmitry5; Sakuma,Shun4; Krugman,Tamar5; Nevo,Eviatar5
刊名	BMC Evolutionary Biology
	2012-09-24
卷号	12期号:1
关键词	Wild barley HvABCG31 Promoter Phylogenetic TFBSs
ISSN号	1471-2148
DOI	10.1186/1471-2148-12-188
通讯作者	Korol,Abraham(korol@research.haifa.ac.il) ; Chen,Guoxiong(guoxiong@lzb.ac.cn)
英文摘要	AbstractBackgroundThe cuticle is an important adaptive structure whose origin played a crucial role in the transition of plants from aqueous to terrestrial conditions. HvABCG31/Eibi1 is an ABCG transporter gene, involved in cuticle formation that was recently identified in wild barley (Hordeum vulgare ssp. spontaneum). To study the genetic variation of HvABCG31 in different habitats, its 2 kb promoter region was sequenced from 112 wild barley accessions collected from five natural populations from southern and northern Israel. The sites included three mesic and two xeric habitats, and differed in annual rainfall, soil type, and soil water capacity.ResultsPhylogenetic analysis of the aligned HvABCG31 promoter sequences clustered the majority of accessions (69 out of 71) from the three northern mesic populations into one cluster, while all 21 accessions from the Dead Sea area, a xeric southern population, and two isolated accessions (one from a xeric population at Mitzpe Ramon and one from the xeric ‘African Slope’ of “Evolution Canyon”) formed the second cluster. The southern arid populations included six haplotypes, but they differed from the consensus sequence at a large number of positions, while the northern mesic populations included 15 haplotypes that were, on average, more similar to the consensus sequence. Most of the haplotypes (20 of 22) were unique to a population. Interestingly, higher genetic variation occurred within populations (54.2%) than among populations (45.8%). Analysis of the promoter region detected a large number of transcription factor binding sites: 121–128 and 121–134 sites in the two southern arid populations, and 123–128,125–128, and 123–125 sites in the three northern mesic populations. Three types of TFBSs were significantly enriched: those related to GA (gibberellin), Dof (DNA binding with one finger), and light.ConclusionsDrought stress and adaptive natural selection may have been important determinants in the observed sequence variation of HvABCG31 promoter. Abiotic stresses may be involved in the HvABCG31 gene transcription regulations, generating more protective cuticles in plants under stresses.
收录类别	BMC
语种	英语
出版者	BioMed Central
WOS记录号	BMC:10.1186/1471-2148-12-188
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557244
专题	寒区旱区环境与工程研究所
通讯作者	Korol,Abraham; Chen,Guoxiong
作者单位	1.Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences; Extreme Stress Resistance and Biotechnology Laboratory 2.Chinese Academy of Sciences; Shenzhen Fairy Lake Botanical Garden 3.Tel Aviv University; Institute for Cereal Crops Improvement 4.National Institute of Agrobiological Sciences 5.University of Haifa; Institute of Evolution and Department of Evolutionary & Environmental Biology
推荐引用方式 GB/T 7714	Ma,Xiaoying,Sela,Hanan,Jiao,Genlin,et al. Population-genetic analysis of HvABCG31 promoter sequence in wild barley (Hordeum vulgare ssp. spontaneum)[J]. BMC Evolutionary Biology,2012,12(1).
APA	Ma,Xiaoying.,Sela,Hanan.,Jiao,Genlin.,Li,Chao.,Wang,Aidong.,...&Chen,Guoxiong.(2012).Population-genetic analysis of HvABCG31 promoter sequence in wild barley (Hordeum vulgare ssp. spontaneum).BMC Evolutionary Biology,12(1).
MLA	Ma,Xiaoying,et al."Population-genetic analysis of HvABCG31 promoter sequence in wild barley (Hordeum vulgare ssp. spontaneum)".BMC Evolutionary Biology 12.1(2012).

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