Invasive Ageratina adenophora can maintain its ecological advantages over time through releasing its autotoxicity by accumulating a bacterium Bacillus cereus

文献类型： 外文期刊

第一作者： Wu, Ai-Ping

作者： Wu, Ai-Ping;Bai, Zhong-Xi;Liu, Hui;Chen, Fa-Lin;Zhang, Man-Yun;Wang, Yan-Hong;Wen, Ji-Hui;Wu, Ai-Ping;Li, Jian;Wang, Yan-Hong;Balah, Mohamed Abdelaziz;Wen, Ji-Hui

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关键词： Autotoxicity; Bacterium; Detoxification; Invasion; Advantage; Release; Decline; Over time

期刊名称：HELIYON （ 影响因子：4.0； 五年影响因子：4.1 ）

ISSN：

年卷期： 2023 年 9 卷 1 期

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收录情况： SCI

摘要： Plant invasive success is attributed to invaders' ecological advantages over their native neighbors. However, increasing evidence suggests that these advantages are expected to attenuate over time because of natural enemy accumulation, ecological evolution of native species and autotoxicity. We determined how an invasive Ageratina adenophora could remain its competitive advantages over time by avoiding its autotoxicity. Our results highlighted that the autotoxicity of A. adenophora in its invaded soil was reduced by some microbes. Moreover, an autotoxic alle-lochemical, 2-coumaric acid glucoside, detected in the invaded soil, demonstrated distinctly autotoxic effects on its seed germination and seedling growth. However, the autotoxic effects were greatly alleviated by a bacterium Bacillus cereus, accumulated by A. adenophora. Further-more, the allelochemical could be almost completely degraded by B. cereus within 96 h. Accordingly, we speculate that A. adenophora could aggregate B. cereus to release its autotoxicity maintaining its competitive advantages over time.

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