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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
Corresponding AuthorGao, LZ (reprint author), Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species Southwest China, Kunming, Peoples R China.,Lgao@mail.kib.ac.cn ; Jiajizeng@caas.cn
2013-09-24
Source PublicationPLOS ONE
ISSN1932-6203
Volume8Issue:9Pages:e75544
AbstractHexaploid 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.
KeywordQuantitative Trait Locus Brachypodium-distachyon Oryza-sativa Polyploid Wheat Draft Sequence Gene Model Rice Maize L.
Subject AreaMultidisciplinary Sciences
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000325025200047
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/17313
Collection中国西南野生生物种质资源库
Affiliation1.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
Recommended Citation
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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