论文题目: Identification of microRNAs from Zn-treated Solanum nigrum roots by small RNA sequencing

论文编号:
作者: Xie, ZX (谢志霞); Zhang, P; Zhao, JJ; Wang, RL; Gao, JP; Xu, J
刊物名称: ACTA PHYSIOLOGIAE PLANTARUM
卷期页码: 卷: 39, 期: 1,
发表年度: 2017
DOI: http://dx.doi.org/10.1007/s11738-016-2337-x
摘要: MicroRNAs (miRNAs) play key roles in regulating zinc (Zn) toxicity tolerance in plants.Solanum nigrumis a typical Zn/Cd-accumulating plant that has a high Zn/Cd tolerance. Despite their importance, no miRNAs have been identified fromS. nigrumthus far. In this study, small RNA sequencing was used to identify Zn-responsive miRNAs inS. nigrumroots. We identified 176 differentially expressed miRNAs inS. nigrumroots in response to Zn toxicity. We also found that all these differentially expressed Zn-miRNAs simultaneously respond to the exogenous NO donor sodium nitroprusside (SNP), indicating that NO is involved in Zn-mediated miRNA expression inS. nigrum. These differentially expressed miRNAs are involved in regulating the following processes inS. nigrumroots: phenylpropanoid catabolic and metabolic processes; lignin catabolic and metabolic processes; and programmed cell death in response to ROS. These results suggest that these miRNAs play key roles in the Zn toxicity tolerance ofS. nigrum.