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Dynamic Evolution of Rht-1 Homologous Regions in Grass Genomes
Wu, Jing1; Kong, Xiuying1; Shi, Chao2; Gu, Yongqiang3; Jin, Cuiyun1; Gao, Lizhi2; Jia, Jizeng1
2013-09-24
发表期刊PLOS ONE
ISSN1932-6203
卷号8期号:9页码:e75544
摘要Hexaploid bread wheat contains A, B, and D three subgenomes with its well-characterized ancestral genomes existed at diploid and tetraploid levels, making the wheat act as a good model species for studying evolutionary genomic dynamics. Here, we performed intra- and inter-species comparative analyses of wheat and related grass genomes to examine the dynamics of homologous regions surrounding Rht-1, a well-known "green revolution" gene. Our results showed that the divergence of the two A genomes in the Rht-1 region from the diploid and tetraploid species is greater than that from the tetraploid and hexaploid wheat. The divergence of D genome between diploid and hexaploid is lower than those of A genome, suggesting that D genome diverged latter than others. The divergence among the A, B and D subgenomes was larger than that among different ploidy levels for each subgenome which mainly resulted from genomic structural variation of insertions and, perhaps deletions, of the repetitive sequences. Meanwhile, the repetitive sequences caused genome expansion further after the divergence of the three subgenomes. However, several conserved non-coding sequences were identified to be shared among the three subgenomes of wheat, suggesting that they may have played an important role to maintain the homolog of three subgenomes. This is a pilot study on evolutionary dynamics across the wheat ploids, subgenomes and differently related grasses. Our results gained new insights into evolutionary dynamics of Rht-1 region at sequence level as well as the evolution of wheat during the plolyploidization process.
关键词Quantitative Trait Locus Brachypodium-distachyon Oryza-sativa Polyploid Wheat Draft Sequence Gene Model Rice Maize L.
资助信息863 project from Ministry of Science and Technology of China [2011AA100104]; Key Project of Natural Science Foundation of Yunnan Province [2008CC016]; Talents Program of Yunnan Province [20080A009]; Hundreds Talents Program of the Chinese Academy of Sciences (CAS); Chinese Academy of Science [KSCX2-YW-N-029]; Chinese Department of Science and Technology (973 Program) [2007CB815703]; Kunming Institute of Botany, CAS
学科领域Multidisciplinary Sciences
收录类别SCI
语种英语
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000325025200047
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/17313
专题中国西南野生生物种质资源库
作者单位1.Chinese Acad Agr Sci, Key Lab Crop Germplasm Resources & Utilizat, Natl Key Facil Crop Gene Resources & Genet Improv, Minist Agr,Inst Crop Sci, Beijing 100193, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species Southwest China, Kunming, Peoples R China
3.ARS, USDA, Western Reg Res Ctr, Albany, CA USA
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GB/T 7714
Wu, Jing,Kong, Xiuying,Shi, Chao,et al. Dynamic Evolution of Rht-1 Homologous Regions in Grass Genomes[J]. PLOS ONE,2013,8(9):e75544.
APA Wu, Jing.,Kong, Xiuying.,Shi, Chao.,Gu, Yongqiang.,Jin, Cuiyun.,...&Jia, Jizeng.(2013).Dynamic Evolution of Rht-1 Homologous Regions in Grass Genomes.PLOS ONE,8(9),e75544.
MLA Wu, Jing,et al."Dynamic Evolution of Rht-1 Homologous Regions in Grass Genomes".PLOS ONE 8.9(2013):e75544.
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