Abiotic factors and endophytes co-regulate flavone and terpenoid glycoside metabolism in Glycyrrhiza uralensis

文献类型： 外文期刊

第一作者： Liu, Zidi

作者： Liu, Zidi;Ma, Yunyang;Li, Nannan;Li, Xiaohan;Hu, Bing;Lv, Xuelian;Xing, Jianmin;Xing, Jianmin;Li, Chun;Hu, Bing

作者机构：

关键词： Glycyrrhiza uralensis Fisch; Secondary metabolite synthesis; Root-associated endophytes; 16S rDNA; Transcriptomics

期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：5.0； 五年影响因子：5.2 ）

ISSN： 0175-7598

年卷期： 2023 年 107 卷 7-8 期

页码：

收录情况： SCI

摘要： Recently, endorhizospheric microbiota is realized to be able to promote the secondary metabolism in medicinal plants, but the detailed metabolic regulation metabolisms and whether the promotion is influenced by environmental factors are unclear yet. Here, the major flavonoids and endophytic bacterial communities in various Glycyrrhiza uralensis Fisch. roots collected from seven distinct places in northwest China, as well as the edaphic conditions, were characterized and analyzed. It was found that the soil moisture and temperature might modulate the secondary metabolism in G. uralensis roots partially through some endophytes. One rationally isolated endophyte Rhizobium rhizolycopersici GUH21 was proved to promote the accumulation of isoliquiritin and glycyrrhizic acid significantly in roots of the potted G. uralensis under the relatively high-level watering and low temperature. Furthermore, we did the comparative transcriptome analysis of G. uralensis seedling roots in different treatments to investigate the detailed mechanisms of the environment-endophyte-plant interactions and found that the low temperature went hand in hand with the high-level watering to activate the aglycone biosynthesis in G. uralensis, while GUH21 and the high-level watering cooperatively promoted the in planta glucosyl unit production. Our study is of significance for the development of methods to rationally promote the medicinal plant quality.

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