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Integrated Metabolomics and Transcriptomics Analyses Highlight the Flavonoid Compounds Response to Alkaline Salt Stress in Glycyrrhiza uralensis Leaves

文献类型： 外文期刊

作者： Lv, Xuelian 1 ; Zhu, Lin 3 ; Ma, Dongmei 3 ; Zhang, Fengju 3 ; Cai, Zhengyun 4 ; Bai, Haibo 2 ; Hui, Jian 2 ; Li, Shuhua 2 ; Xu, Xing 1 ; Li, Ming 5 ;

作者机构： 1.Ningxia Univ, Coll Forestry & Prataculture, Yinchuan 750021, Peoples R China

2.Ningxia Acad Agr & Forestry Sci, Agr Biotechnol Res Ctr, Yinchuan 750002, Peoples R China

3.Ningxia Univ, Coll Ecol & Environm, Yinchuan 750021, Peoples R China

4.Ningxia Univ, Dept Life & Food Sci, Yinchuan 750021, Peoples R China

5.Ningxia Acad Agr & Forestry Sci, Inst Forestry & Grassland Ecol, Yinchuan 750002, Peoples R China

关键词： Glycyrrhiza uralensis; metabolomics; transcriptomics; alkaline salt stress; flavonoidbiosynthesis

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2024 年 72 卷 10 期

页码：

收录情况： SCI

摘要： Glycyrrhiza uralensis is a saline-alkali-tolerant plant whose aerial parts are rich in flavonoids; however, the role of these flavonoids in saline-alkali tolerance remains unclear. Herein, we performed physiological, metabolomics, and transcriptomics analyses in G. uralensis leaves under alkaline salt stress for different durations. Alkaline salt stress stimulated excessive accumulation of reactive oxygen species and consequently destroyed the cell membrane, causing cell death, and G. uralensis initiated osmotic regulation and the antioxidant system to respond to stress. In total, 803 metabolites, including 244 flavonoids, were detected via metabolomics analysis. Differentially altered metabolites and differentially expressed genes were coenriched in flavonoid-related pathways. Genes such as novel.4890, Glyur001511s00039602, and Glyur000775s00025737 were highly expressed, and flavonoid metabolites such as 2'-hydroxygenistein, apigenin, and 3-O-methylquercetin were upregulated. Thus, flavonoids as nonenzymatic antioxidants play an important role in stress tolerance. These findings provide novel insights into the response of G. uralensis to alkaline salt stress.

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