Whole-genome identiifcation and expression analysis of K+eflfux antiporter (KEA) and Na+/H+antiporter (NHX) families under abiotic stress in soybean

CHEN Hua-tao; CHEN Xin; WU Bing-yue; YUAN Xing-xing; ZHANG Hong-mei; CUI Xiao-yan; LIU Xiao-qing

首页> 中文期刊> 《农业科学学报（英文版）》 >Whole-genome identiifcation and expression analysis of K+eflfux antiporter (KEA) and Na+/H+antiporter (NHX) families under abiotic stress in soybean

Whole-genome identiifcation and expression analysis of K+eflfux antiporter (KEA) and Na+/H+antiporter (NHX) families under abiotic stress in soybean

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Sodium toxicity and potassium insufifcient are important factors affecting the growth and development of soybean in saline soil. As the capacity of plants to maintain a high cytosolic, K+/Na+ratio is the key determinant of tolerance under salt stress. The aims of the present study were to identify and analyse expression patterns of the soybean K+eflfux antiporter (KEA) gene and Na+/H+ antiporter (NHX) gene family, and to explore their roles under abiotic stress. As a result, 12 soybean GmKEAs genes and 10 soybean GmNHXs genes were identiifed and analyzed from soybean genome. Interestingly, the novel soybean KEA gene Glyma16g32821 which encodes 11 transmembrane domains were extremely up-regulated and remained high level until 48 h in root after the excessive potassium treatment and lack of potassium treatment, respectively. The novel soybean NHX gene Glyma09g02130 which encodes 10 transmembrane domains were extremely up-regulated and remained high level until 48 h in root with NaCl stress. Imaging of subcel ular locations of the two new Glyma16g32821-GFP and Glyma09g02130-GFP fusion proteins indicated al plasma membrane localizations of the two novel soybean genes. The 3D structures indicated that the two soybean novel proteins Glyma09g02130 (NHX) and Glyma16g32821 (KEA) al belong to the cation/hydrogen antiporter family.

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《农业科学学报（英文版）》 |2015年第6期|1171-1183|共13页
作者
CHEN Hua-tao; CHEN Xin; WU Bing-yue; YUAN Xing-xing; ZHANG Hong-mei; CUI Xiao-yan; LIU Xiao-qing;
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Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China;

Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China;

Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China;

Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China;

Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China;

Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China;

Institute of Vegetable Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China;

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Whole-genome identiifcation and expression analysis of K+eflfux antiporter (KEA) and Na+/H+antiporter (NHX) families under abiotic stress in soybean

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