干旱区生态环境知识资源中心(Arid): A Novel Gene Coding gamma-Aminobutyric Acid Transporter May Improve the Tolerance of Populus euphratica to Adverse Environments

Arid

DOI	10.3389/fpls.2019.01083
	A Novel Gene Coding gamma-Aminobutyric Acid Transporter May Improve the Tolerance of Populus euphratica to Adverse Environments
	Bai, Xiaotao; Xu, Jianmei; Shao, Xuemin; Luo, Wenchun; Niu, Zhimin; Gao, Chengyu; Wan, Dongshi
通讯作者	Wan, Dongshi
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2019
卷号	10
英文摘要	Novel genes provide important genetic resource for organism innovation. However, the evidence from genetic experiment is limited. In plants, gamma-aminobutyric acid (GABA) transporters (GATs) primarily transport GABA and further involve in plant growth, development, and response to various stresses. In this study, we have identified the GATs family in Populus species and characterized their functional evolution and divergence in a desert poplar species (Populus euphratica). We found that the GATs underwent genus-specific expansion via multiple whole-genome duplications in Populus species. The purifying selection were identified across those GATs evolution and divergence in poplar diversity, except two paralogous PeuGAT2 and PeuGAT3 from P euphratica. The both genes arose from a tandem duplication event about 49 million years ago and have experienced strong positive selection, suggesting that the divergence in PeuGAT3 protein function/structure might define gene function better than in expression pattern. Both PeuGAT genes were functionally characterized in Arabidopsis and poplar, respectively. The overexpression of PeuGAT3 increased the thickness of xylem cells walls in both Arabidopsis and poplar and enhanced the lignin content of xylem tissues and the proline accumulation in poplar leaves, all of which may improve tolerance of salt/drought stress in desert poplars. Our findings help clarify the genetic mechanisms underpinning high tolerance in desert poplars and suggest that PeuGAT3 could be an attractive candidate gene for engineering trees with improved brown-rot resistance.
英文关键词	gamma-aminobutyric acid transporters novel gene functional divergence poplars adaptive evolution
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000485142000001
WOS关键词	SALT ; DUPLICATION ; METABOLISM ; EXPRESSION ; EVOLUTION ; PROLINE ; ORIGIN ; SUBFUNCTIONALIZATION ; PRESERVATION ; ARABIDOPSIS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215831
作者单位	Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Bai, Xiaotao,Xu, Jianmei,Shao, Xuemin,et al. A Novel Gene Coding gamma-Aminobutyric Acid Transporter May Improve the Tolerance of Populus euphratica to Adverse Environments[J]. 兰州大学,2019,10.
APA	Bai, Xiaotao.,Xu, Jianmei.,Shao, Xuemin.,Luo, Wenchun.,Niu, Zhimin.,...&Wan, Dongshi.(2019).A Novel Gene Coding gamma-Aminobutyric Acid Transporter May Improve the Tolerance of Populus euphratica to Adverse Environments.FRONTIERS IN PLANT SCIENCE,10.
MLA	Bai, Xiaotao,et al."A Novel Gene Coding gamma-Aminobutyric Acid Transporter May Improve the Tolerance of Populus euphratica to Adverse Environments".FRONTIERS IN PLANT SCIENCE 10(2019).