Transposable elements play an important role during cotton genome   evolution and fiber cell development

doi:10.1007/s11427-015-4928-y

CORC > 北京大学 > 生命科学学院

	Transposable elements play an important role during cotton genome evolution and fiber cell development
	Wang, Kun ; Huang, Gai ; Zhu, Yuxian
刊名	SCIENCE CHINA-LIFE SCIENCES
	2016
关键词	transposable elements Gossypium genus genome evolution fiber development GENE ELONGATION MAIZE GOSSYPIUM RETROTRANSPOSON SEQUENCE RICE SIZE POLYPLOIDIZATION AMPLIFICATION
DOI	10.1007/s11427-015-4928-y
英文摘要	Transposable elements (TEs) usually occupy largest fractions of plant genome and are also the most variable part of the structure. Although traditionally it is hallmarked as "junk and selfish DNA", today more and more evidence points out TE's participation in gene regulations including gene mutation, duplication, movement and novel gene creation via genetic and epigenetic mechanisms. The recently sequenced genomes of diploid cottons Gossypium arboreum (AA) and Gossypium raimondii (DD) together with their allotetraploid progeny Gossypium hirsutum (AtAtDtDt) provides a unique opportunity to compare genome variations in the Gossypium genus and to analyze the functions of TEs during its evolution. TEs accounted for 57%, 68.5% and 67.2%, respectively in DD, AA and AtAtDtDt genomes. The 1,694 Mb A-genome was found to harbor more LTR(long terminal repeat) -type retrotransposons that made cardinal contributions to the twofold increase in its genome size after evolution from the 775.2 Mb D-genome. Although the 2,173 Mb AtAtDtDt genome showed similar TE content to the A-genome, the total numbers of LTR-gypsy and LTR-copia type TEs varied significantly between these two genomes. Considering their roles on rewiring gene regulatory networks, we believe that TEs may somehow be involved in cotton fiber cell development. Indeed, the insertion or deletion of different TEs in the upstream region of two important transcription factor genes in At or Dt subgenomes resulted in qualitative differences in target gene expression. We suggest that our findings may open a window for improving cotton agronomic traits by editing TE activities.; National Natural Science Foundation of China [90717009]; Chinese National Basic Research Program of Ministry of Science and Technology of China [2010CB126000]; SCI(E); PubMed; 中国科学引文数据库(CSCD); REVIEW; zhuyx@whu.edu.cn; 2; 112-121; 59
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/435782]
专题	生命科学学院
推荐引用方式 GB/T 7714	Wang, Kun,Huang, Gai,Zhu, Yuxian. Transposable elements play an important role during cotton genome evolution and fiber cell development[J]. SCIENCE CHINA-LIFE SCIENCES,2016.
APA	Wang, Kun,Huang, Gai,&Zhu, Yuxian.(2016).Transposable elements play an important role during cotton genome evolution and fiber cell development.SCIENCE CHINA-LIFE SCIENCES.
MLA	Wang, Kun,et al."Transposable elements play an important role during cotton genome evolution and fiber cell development".SCIENCE CHINA-LIFE SCIENCES (2016).