Microbial communities in the rhizosphere soil of Ambrosia artemisiifolia facilitate its growth

文献类型： 外文期刊

第一作者： Zhang, Han

作者： Zhang, Han;Li, Qiao;Guo, Jianying;Liu, Wanxue;Zhao, Mengxin;Zhang, Han;Sun, Wenxiu

作者机构：

关键词： Microbial community; Ambrosia artemisiifolia; Plant invasion; Rhizosphere soil; Common garden

期刊名称：PLANT AND SOIL （ 影响因子：4.9； 五年影响因子：5.2 ）

ISSN： 0032-079X

年卷期： 2023 年

页码：

收录情况： SCI

摘要： PurposeThe invasive weed common ragweed (Ambrosia artemisiifolia [L.]) has become notorious in China as a major weed in agriculture. Soil microbial communities play important roles in invasive plant growth by potentially mediating nutrient cycling in soil. However, knowledge regarding the soil microbial communities in common ragweed remains limited.MethodsIn this study, a long-term field experiment was conducted to comparatively study the microbial community compositions in the rhizosphere soil of invasive common ragweed and two native plants, Chenopodium serotinum and Setaria viridis.ResultsWe found that the bacterial and fungal community compositions differed significantly between common ragweed and two native plants. Invasion by common ragweed selectively accumulated microorganisms, such as Exopiala, RB41, Cnuella, Dinghuibacter and Funneliformis, that can enhance carbon and nitrogen cycling and the absorption of phosphorus in the rhizosphere environment. Moreover, the relative abundances of these microorganisms were significantly related to the soil pH and ammonium contents. Furthermore, we found that microbial inoculants from rhizosphere of common ragweed promote growth of both common ragweed and S. viridis.ConclusionsOur results show that common ragweed constructs a unique rhizosphere microbial community that distinguishes it from local plants, which could contribute to its growth and expansion by providing a stronger ability to use carbon, nitrogen, and phosphorus. This study offers fundamental explanation to explain how the underground microbial community facilitate the invasion of common ragweed on an ecosystem-level.

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