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Journal of Integrative Agriculture  2019, Vol. 18 Issue (12): 2682-2690    DOI: 10.1016/S2095-3119(19)62651-1
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TaSAUR78 enhances multiple plant abiotic stress responses by regulating the interacting gene TaVDAC1
GUO Yuan1*, XU Chang-bing2*, SUN Xian-jun1, HU Zheng1, FAN Shou-jin2, JIANG Qi-yan1, ZHANG Hui 
1 Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
2 College of Life Sciences, Shandong Normal University, Jinan 250014, P.R.China
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SMALL AUXIN-UP RNAs (SAURs) regulated by abiotic stress play multiple functions in plants.  However, the functions of SAURs in abiotic stress are largely unknown.  In this study, we cloned a novel SAUR gene, TaSAUR78, from wheat, and we found that TaSAUR78 interacted with TaVDAC1 (voltage-dependent anion channel).  Salt stress decreased expression of TaSAUR78 and increased expression of TaVDAC1.  Overexpression of TaSAUR78 enhanced tolerance to salt, drought, and freezing stresses in transgenic Arabidopsis and reduced the accumulation of reactive oxygen species (ROS) under salt stress.  Overexpression of TaVDAC1 enhanced tolerance to salt stress, while decreased tolerance to drought and low temperature stresses in transgenic Arabidopsis.  TaVDAC1 overexpression increased the accumulation of ROS in plants.  These results suggested that TaSAUR78 improved plant tolerance to abiotic stresses by regulating TaVDAC1.  This study generated valuable information on the functions of TaSAUR78 and TaVDAC1 in multiple abiotic stresses, which may facilitate the deployment of these genes to enhance crop tolerance to abiotic stresses in the future.
Keywords:  TaSAUR78        TaVDAC1        wheat        abiotic stress  
Received: 24 August 2018   Accepted:
Fund: This study was supported by the National Natural Science Foundation of China (31601302), the National Key R&D Program of China (2016YFD0100304), the National Transgenic Key Project from the Ministry of Agriculture of China (2016ZX08010-005), and the Agricultural Science and Technology Program for Innovation Team on the Identification and Excavation of Elite Crop Germplasm, Chinese Academy of Agricultural Sciences.
Corresponding Authors:  Correspondence JIANG Qi-yan, Tel: +86-10-62189045, E-mail:; ZHANG Hui, Tel: +86-10-62186649, E-mail:   
About author:  * These authors contributed equally to this study.

Cite this article: 

GUO Yuan, XU Chang-bing, SUN Xian-jun, HU Zheng, FAN Shou-jin, JIANG Qi-yan, ZHANG Hui. 2019. TaSAUR78 enhances multiple plant abiotic stress responses by regulating the interacting gene TaVDAC1. Journal of Integrative Agriculture, 18(12): 2682-2690.

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