![]() Compared with native plants, the invasive plants Avena barbata and Bromus secalinus increase the number of ammonia-oxidizing bacteria in soil, improve soil nitrogen cycling, and increase the soil nitrogen content, enhancing the growth and competitiveness of invasive plants ( Hawkes et al., 2005). In the rhizospheric soil of the invasive plant Flaveria bidentis, the levels of diazotrophs, phosphorus-solubilizing bacteria, and silicate-solubilizing bacteria were much higher than those of native plants ( Song et al., 2016, 2017). Beneficial microorganisms, such as arbuscular mycorrhizal (AM) fungi, plant growth-promoting rhizobacteria (PGPR), and rhizobia, were accumulated in the rhizosphere of invasive plants during their growth process, promoting their growth and competitiveness ( Rodríguez-Echeverría, 2010 Philippot et al., 2013 Zhang et al., 2017). For instance, such changes in the microbiota associated with nutrient cycling induced by the exotic plant Conyza canadensis may have a beneficial effect that promotes its establishment and spread ( Zhang et al., 2020). Modifications in the microbial community induced by invasive plants have the potential to initiate a self-promoting mechanism that facilitates the invasion process ( Callaway and Ridenour, 2004 Massenssini et al., 2014 Fang et al., 2019). Understanding the invasion mechanism is crucially important to effectively control and develop management strategies for invasive weeds. Invasive weeds are a major threat to the structure and function of global ecosystems ( van der Putten et al., 2007 D’Antonio et al., 2017) and cause huge economic losses ( Duncan et al., 2004). adenophora can lead to the accumulation of specific Bacillus taxa in the rhizospheric soil, which in turn can increase the competitive advantage of A. adenophora-inoculated Bacillus reached double that of the uninoculated treatment, and the growth of native plants was greatly suppressed under mixed planting. adenophora over the native accompanying plant the corrected index of relative competition intensity of A. The selective accumulation of Bacillus enhanced the competitive advantage of A. adenophora, which significantly increased the nitrate nitrogen (NO 3 –-N) content in the soil and the total carbon and nitrogen concentrations in A. ![]() adenophora in a pot experiment, Bacillus idriensis, Bacillus toyonensis and Bacillus cereus were accumulated in the rhizospheric of A. amethystoides: 88 strains in soil, 9 Bacillus taxa). adenophora: 122 strains in soil, 16 Bacillus taxa R. The results showed that the number and diversity of Bacillus in the rhizospheric soil of A. amethystoides were evaluated in pot experiments. The effects of these rhizospheric Bacillus communities on the growth and competition of A. This study isolated and enriched the Bacillus community in the rhizospheric soil of the invasive plant Ageratina adenophora and the native accompanying plant Rabdosia amethystoides. The rhizospheric microbial community affects the population establishment of invasive plants in introduced areas, among which Bacillus has numerous functions in promoting plant growth. 2Yunnan Plant Protection and Quarantine Station, Kunming, China.1State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, College of Plant Protection, Yunnan Agricultural University, Kunming, China.Ewei Du 1†, Yaping Chen 1†, Yahong Li 2, Zhongxiang Sun 1 and Furong Gui 1*
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