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Integrated physiological, transcriptomics and metabolomics analysis revealed the molecular mechanism of Bupleurum chinense seedlings to drought stress

文献类型： 外文期刊

作者： Feng, Xiaohan 1 ; Sun, Yan 1 ; Fan, Ya 1 ; Zhang, Quanfang 2 ; Bu, Xun 2 ; Gao, Demin 1 ;

作者机构： 1.Shandong Univ Tradit Chinese Med TCM, Sch Pharm, Jinan, Peoples R China

2.Shandong Acad Agr Sci, Inst Crop Germplasm Resources, Jinan, Peoples R China

期刊名称：PLOS ONE （ 影响因子：2.9； 五年影响因子：3.3 ）

ISSN： 1932-6203

年卷期： 2024 年 19 卷 6 期

页码：

收录情况： SCI

摘要： Drought stress is a prominent abiotic factor that adversely influences the growth and development of Bupleurum chinense during its seedling stage, negatively impacting biomass and secondary metabolite production, thus affecting yield and quality. To investigate the molecular mechanism underlying the response of B. chinense seedlings under drought stress, this study employed comprehensive physiological, transcriptomic, and metabolomic analyses. The results revealed that under drought stress, the root soluble sugar and free proline content in B. chinense seedlings significantly increased, while the activities of SOD, POD, and CAT increased in the leaves. These findings indicate the presence of distinct response mechanisms in B. chinense to cope with drought stress. Integrated analysis further identified significant correlations between genes and metabolites related to amino acid biosynthesis in the leaves, as well as genes and metabolites associated with acetaldehyde and dicarboxylic acid metabolism. In the roots, genes and metabolites related to plant hormone signaling and the tricarboxylic acid (TCA) cycle showed significant correlations. These findings provide vital views into the molecular-level response mechanisms of B. chinense under drought stress. Moreover, this study establishes the groundwork for identifying drought-tolerant genes and breeding drought-resistant varieties, which could improve the drought tolerance of medicinal plants and have broader implications for agriculture and crop production in water-scarce areas.

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