A cotton miRNA is involved in regulation of plant response to salt stress
Gao, Shuai; Yang, Lu; Zeng, Hou Qing; Zhou, Zhao Sheng; Yang, Zhi Min; Li, Hua; Sun, Di; Xie, Fuliang; Zhang, Baohong
The present study functionally identified a new microRNA (microRNA ovual line 5, miRNVL5) with its target gene GhCHR from cotton (Gossypium hirsutum). The sequence of miRNVL5 precursor is 104 nt long, with a well developed secondary structure. GhCHR contains two DC1 and three PHD Cys/His-rich domains, suggesting that GhCHR encodes a zinc-finger domain-containing transcription factor. miRNVL5 and GhCHR express at various developmental stages of cotton. Under salt stress (50–400 mM NaCl), miRNVL5 expression was repressed, with concomitant high expression of GhCHR in cotton seedlings. Ectopic expression of GhCHR in Arabidopsis conferred salt stress tolerance by reducing Na+ accumulation in plants and improving primary root growth and biomass. Interestingly, Arabidopsis constitutively expressing miRNVL5 showed hypersensitivity to salt stress. A GhCHR orthorlous gene At2g44380 from Arabidopsis that can be cleaved by miRNVL5 was identified by degradome sequencing, but no confidential miRNVL5 homologs in Arabidopsis have been identified. Microarray analysis of miRNVL5 transgenic Arabidopsis showed six downstream genes (CBF1, CBF2, CBF3, ERF4, AT3G22920, and AT3G49200), which were induced by salt stress in wild-type but repressed in miRNVL5-expressing Arabidopsis. These results indicate that miRNVL5 is involved in regulation of plant response to salt stress.
Gao, Shuai, & Yang, Lu, & Zeng, Hou Qing, & Zhou, Zhao Sheng, & Yang, Zhi Min, & Li, Hua, & Sun, Di, & Xie, Fuliang, & Zhang, Baohong. (January 2016). A cotton miRNA is involved in regulation of plant response to salt stress. Scientific Reports, 6(), 1- 14. Retrieved from http://hdl.handle.net/10342/5501
Gao, Shuai, and Yang, Lu, and Zeng, Hou Qing, and Zhou, Zhao Sheng, and Yang, Zhi Min, and Li, Hua, and Sun, Di, and Xie, Fuliang, and Zhang, Baohong. "A cotton miRNA is involved in regulation of plant response to salt stress". Scientific Reports. 6:. (1-14), January 2016. October 18, 2018. http://hdl.handle.net/10342/5501.
Gao, Shuai and Yang, Lu and Zeng, Hou Qing and Zhou, Zhao Sheng and Yang, Zhi Min and Li, Hua and Sun, Di and Xie, Fuliang and Zhang, Baohong, "A cotton miRNA is involved in regulation of plant response to salt stress," Scientific Reports 6, no. (January 2016), http://hdl.handle.net/10342/5501 (accessed October 18, 2018).
Gao, Shuai, Yang, Lu, Zeng, Hou Qing, Zhou, Zhao Sheng, Yang, Zhi Min, Li, Hua, Sun, Di, Xie, Fuliang, Zhang, Baohong. A cotton miRNA is involved in regulation of plant response to salt stress. Scientific Reports. January 2016; 6(): 1-14. http://hdl.handle.net/10342/5501. Accessed October 18, 2018.