The miR172c-NNC1 module modulates root plastic development in response to salt in soybean

BMC Plant Biology

Research Article

Qiong Jiang¹  Xia Li²  Qiqi Yan²  Xingke Zhang²  Ihteram Ullah³  Lixiang Wang³  Zulfiqar Ali Sahito⁴  Yiping Tong⁵  Zhengxi Sun⁵ 

[1] Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 286 Huaizhong Road, 050021, Shijiazhuang, Hebei, People’s Republic of China;University of Chinese Academy of Sciences, 100049, Beijing, People’s Republic of China;State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, 430070, Wuhan, People’s Republic of China;State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, 430070, Wuhan, People’s Republic of China;Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 286 Huaizhong Road, 050021, Shijiazhuang, Hebei, People’s Republic of China;State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, 430070, Wuhan, People’s Republic of China;Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 286 Huaizhong Road, 050021, Shijiazhuang, Hebei, People’s Republic of China;University of Chinese Academy of Sciences, 100049, Beijing, People’s Republic of China;State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, 100101, Beijing, China;

关键词: miR172c;    Root development;    Salt stress;    Soybean;   

DOI  :  10.1186/s12870-017-1161-9

 received in 2017-03-25, accepted in 2017-11-08,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundPlant roots are highly plastic to high salinity. However, the molecular mechanism by which root developmental plasticity is regulated remains largely unknown. Previously we reported that miR172c-NNC1 module plays a key role in soybean-rhizobial symbiosis. The fact that the miR172c promoter contains several stress-related cis elements indicates that miR172c may have a role in root response to abiotic stress.ResultsHere we showed that miR172c is greatly induced by salt stress in soybean. Overexpression of miR172c and knockdown of miR172c activity resulted in substantially increased and reduced root sensitivity to salt stress, respectively. Furthermore, we show that the target gene NNC1 (Nodule Number Control 1) of miR172c was downregulated by salt stress. The transgenic roots overexpressing or knocking down NNC1 expression also exhibited the altered root sensitivity to salt stress.ConclusionThe study reveals the crucial role of miR172c-NNC1 module in root stress tolerance to salt stress in soybean.

【 授权许可】

CC BY   
© The Author(s). 2017