Mechanism by which salt stress induces physiological responses and regulates tanshinone synthesis
文献类型: 外文期刊
作者: Yu, Wancong 1 ; Yu, Yue 2 ; Wang, Ceng 1 ; Zhang, Zhijun 3 ; Xue, Zhaohui 2 ;
作者机构: 1.Tianjin Acad Agr Sci, Biotechnol Res Inst, Tianjin 300384, Peoples R China
2.Tianjin Univ, Sch Chem Engn & Technol, Dept Food Sci, Tianjin 300350, Peoples R China
3.Minist Agr & Rural Affairs, Tianjin Key Lab Postharvest Physiol & Storage Agr, Key Lab Storage Agr Prod, Natl Engn Technol Res Ctr Preservat Agr Prod, Tianjin 300384, Peoples R China
关键词: Salvia miltiorrhiza; Tanshinone; Salt stress; AP2/ERF transcription Factors
期刊名称:PLANT PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:4.27; 五年影响因子:4.816 )
ISSN: 0981-9428
年卷期: 2021 年 164 卷
页码:
收录情况: SCI
摘要: Salvia miltiorrhiza is a traditional Chinese herbal medicine with tanshinone as one of the main bioactive components and has antitumor, antibacterial, anti-inflammatory properties, as well as other physiological functions. Tanshinone, as a secondary metabolite, is synthesized under salt stress or other environmental stresses. Oxidative stress is an important physiological response of plants to salt stress. Transcription factors (TFs) are believed to play regulatory roles in this process, and AP2/ERF TFs have significant effects on defense against the adversity of plants. However, investigations on the regulation of AP2/ERF TFs in tanshinone synthesis under salt stress are limited. In this research, the tanshinone content, related gene expression and activities of enzymes, and the markers of oxidative stress were determined. The results showed that SmAP1, SmAP2 and SmERF2 were AP2/ERF TFs with AP conserved sequences, whose relative expression levels increased and were positively correlated with the contents of tanshinone I (T-I), tanshinone IIA (T-IIA) and cryptotanshinone (CT) in the roots of Salvia miltiorrhiza. The content of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) increased in the roots of Salvia miltiorrhiza. The expression levels of genes encoding enzymes and the activities of key enzymes in the tanshinone biosynthesis pathway increased accordingly. The results showed that AP2/ERF TFs could positively regulate the biosynthesis of tanshinone in the roots of Salvia miltiorrhiza under salt stress.
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