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    2019, Vol. 18 Issue (02): 372-380     DOI: 10.1016/S2095-3119(18)61957-4
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GsMAPK4, a positive regulator of soybean tolerance to salinity stress
QIU You-wen, FENG Zhe, FU Ming-ming, YUAN Xiao-han, LUO Chao-chao, YU Yan-bo, FENG Yanzhong, WEI Qi, LI Feng-lan
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Salt stress is one of the major factors affecting plant growth and yield in soybean under saline soil condition.  Despite many studies on salinity tolerance of soybean during the past few decades, the detailed signaling pathways and the signaling molecules for salinity tolerance regulation have not been clarified.  In this study, a proteomic technology based on two-dimensional gel electrophoresis (2-DE) and mass spectrometry (MS) were used to identify proteins responsible for salinity tolerance in soybean plant.  Real-time quantitative PCR (qRT-PCR) and Western blotting (WB) were used to verify the results of 2-DE/MS.  Based on the results of 2-DE and MS, we selected glucosyltransferase (GsGT4), 4-coumarate, coenzyme A ligase (Gs4CL1), mitogen-activated protein kinase 4 (GsMAPK4), dehydration responsive element binding protein (GsDREB1), and soybean cold-regulated gene (GsSRC1) in the salinity tolerant soybean variety, and GsMAPK4 for subsequent research.  We transformed soybean plants with mitogen-activated-protein kinase 4 (GsMAPK4) and screened the resulting transgenics soybean plants using PCR and WB, which confirmed the expression of GsMAPK4 in transgenic soybean.  GsMAPK4-overexpressed transgenic plants showed significantly increased tolerance to salt stress, suggesting that GsMAPK4 played a pivotal role in salinity tolerance.  Our research will provide new insights for better understanding the salinity tolerance regulation at molecular level.
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Articles by authors
QIU You-wen
FU Ming-ming
YUAN Xiao-han
LUO Chao-chao
YU Yan-bo
FENG Yanzhong
LI Feng-lan
Key wordssoybean     salinity tolerance     two-dimensional gel electrophoresis     GsMAPK4      
Received: 2017-12-21; Accepted: 2018-03-30
Fund: This research was supported by the Science and Technology Research Project of Department of Education of Heilongjiang Province, China (12541047).
Corresponding Authors: Correspondence LI Feng-lan, Tel: +86-451-55190866, Fax: +86-451-55190413, E-mail: lifenglan@neau.edu.cn   
About author: * These authors contributed equally to this study.
Cite this article:   
QIU You-wen, FENG Zhe, FU Ming-ming, YUAN Xiao-han, LUO Chao-chao, YU Yan-bo, FENG Yanzhong, WEI Qi, LI Feng-lan. 2019. GsMAPK4, a positive regulator of soybean tolerance to salinity stress. Journal of Integrative Agriculture, 18(02): 372-380.
http://www.chinaagrisci.com/Jwk_zgnykxen/EN/ 10.1016/S2095-3119(18)61957-4      or     http://www.chinaagrisci.com/Jwk_zgnykxen/EN/Y2019/V18/I02/372
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