Rhizoglomus intraradicesand associatedBrevibacterium frigoritoleransenhance the competitive growth ofFlaveria bidentis

文献类型： 外文期刊

第一作者： Du, Ewei

作者： Du, Ewei;Chen, Xue;Xu, Haiyun;Zhang, Fengjuan;Li, Qiao;Chen, Fengxin

作者机构：

关键词： Arbuscular mycorrhizal fungi; Bacteria; Rhizosphere; Invasion; Competitive advantage

期刊名称：PLANT AND SOIL （ 影响因子：4.192； 五年影响因子：4.712 ）

ISSN： 0032-079X

年卷期： 2020 年 453 卷 1-2 期

页码：

收录情况： SCI

摘要： Aims Our aim was to determine whether there is a synergistic interaction between the arbuscular mycorrhizal (AM) fungusRhizoglomus intraradicesand the bacteriumBrevibacterium frigoritolerans, and to understand howR. intraradicesandB. frigoritoleransaffect the competitive growth ofFlaveria bidentis(L.) Kuntze in nutrient-deficient soil. Methods Pot culture ofF. bidentisandEclipta prostrata(L.) L. under nutrient-limited soil conditions was used to test the effect ofR. intraradicesandB. frigoritoleranson the competitive growth ofF. bidentis. Results Inoculation withB. frigoritoleransand co-inoculation withR. intraradicesandB. frigoritoleransincreased the biomass ofF. bidentis, and a single inoculation ofB. frigoritoleransgaveE. prostrataa competitive advantage overF. bidentis.However, we found higherR. intraradicescolonization of exoticF. bidentisroots than nativeE. prostrataroots. Conclusions R. intraradicesandB. frigoritoleransprobably play different roles in the invasion ofF. bidentis. R. intraradicesmay give the invader a competitive advantage through the accumulation of higher foliar levels of N, andB. frigoritoleransmay facilitate the uptake of available N from the soil. Therefore, the results support the hypothesis that the AM fungus-soil bacteria cooperation makes N available toF. bidentisand facilitates its competitive growth.

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