Arid
DOI10.1016/j.plaphy.2014.10.010
Overexpression of codA gene confers enhanced tolerance to abiotic stresses in alfalfa
Li, Hongbing1,2,3; Wang, Zhi1,4; Ke, Qingbo1,5; Ji, Chang Yoon1,5; Jeong, Jae Cheol1; Lee, Haeng-Soon1,5; Lim, Yong Pyo4; Xu, Bingcheng2,3; Deng, Xi-Ping2,3; Kwak, Sang-Soo1,5
通讯作者Kwak, Sang-Soo
来源期刊PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN0981-9428
出版年2014
卷号85页码:31-40
英文摘要

We generated transgenic alfalfa plants (Medicago sativa L. cv. Xinjiang Daye) expressing a bacterial codA gene in chloroplasts under the control of the SWPA2 promoter (referred to as SC plants) and evaluated the plants under various abiotic stress conditions. Three transgenic plants (SC7, SC8, and SC9) were selected for further characterization based on the strong expression levels of codA in response to methyl viologen (MV)-mediated oxidative stress. SC plants showed enhanced tolerance to NaCI and drought stress on the whole plant level due to induced expression of codA. When plants were subjected to 250 mM NaCl treatment for 2 weeks, SC7 and SC8 plants maintained higher chlorophyll contents and lower malondialdehyde levels than non-transgenic (NT) plants. Under drought stress conditions, all SC plants showed enhanced tolerance to drought stress through maintaining high relative water contents and increased levels of glycinebetaine and proline compared to NT plants. Under normal conditions, SC plants exhibited increased growth due to increased expression of auxin-related IAA genes compared to NT plants. These results suggest that the SC plants generated in this study will be useful for enhanced biomass production on global marginal lands, such as high salinity and arid lands, yielding a sustainable agricultural product. (C) 2014 Elsevier Masson SAS. All rights reserved.


英文关键词codA Glycinebetaine Alfalfa SWAP2 promoter Salt stress Drought stress Oxidative stress Biomass
类型Article
语种英语
国家South Korea ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000347273300005
WOS关键词MEDIATED OXIDATIVE STRESS ; TRANSGENIC TOBACCO PLANTS ; MEDICAGO-SATIVA L. ; GLYCINE BETAINE ; SUPEROXIDE-DISMUTASE ; CHOLINE-OXIDASE ; SALT-STRESS ; WATER-STRESS ; ASCORBATE PEROXIDASE ; DROUGHT TOLERANCE
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构西北农林科技大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184288
作者单位1.Korea Res Inst Biosci & Biotechnol KRIBB, Plant Syst Engn Res Ctr, Taejon 305806, South Korea;
2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China;
3.Northwest A&F Univ, Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China;
4.Chunnam Natl Univ, Dept Hort, Taejon, South Korea;
5.Korea Univ Sci & Technol, Dept Green Chem & Environm Biotechnol, Taejon, South Korea
推荐引用方式
GB/T 7714
Li, Hongbing,Wang, Zhi,Ke, Qingbo,et al. Overexpression of codA gene confers enhanced tolerance to abiotic stresses in alfalfa[J]. 西北农林科技大学,2014,85:31-40.
APA Li, Hongbing.,Wang, Zhi.,Ke, Qingbo.,Ji, Chang Yoon.,Jeong, Jae Cheol.,...&Kwak, Sang-Soo.(2014).Overexpression of codA gene confers enhanced tolerance to abiotic stresses in alfalfa.PLANT PHYSIOLOGY AND BIOCHEMISTRY,85,31-40.
MLA Li, Hongbing,et al."Overexpression of codA gene confers enhanced tolerance to abiotic stresses in alfalfa".PLANT PHYSIOLOGY AND BIOCHEMISTRY 85(2014):31-40.
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