AUTHOR=Yin Lijuan , Liu Bo , Wang Hengchao , Zhang Yan , Wang Sen , Jiang Fan , Ren Yuwei , Liu Hangwei , Liu Conghui , Wan Fanghao , Wang Haihong , Qian Wanqiang , Fan Wei 

TITLE=The Rhizosphere Microbiome of Mikania micrantha Provides Insight Into Adaptation and Invasion

JOURNAL=Frontiers in Microbiology

VOLUME=11

YEAR=2020

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2020.01462

DOI=10.3389/fmicb.2020.01462

ISSN=1664-302X

ABSTRACT=<p><italic>Mikania micrantha</italic> is a noxious invasive plant causing enormous economic losses and ecological damage. Soil microbiome plays an important role in the invasion process of <italic>M. micrantha</italic>, while little is known about its rhizosphere microbiome composition and function. In this study, we identified the distinct rhizosphere microbial communities of <italic>M. micrantha</italic>, by comparing them with those of two coexisting native plants (<italic>Polygonum chinense</italic> and <italic>Paederia scandens</italic>) and the bulk soils, using metagenomics data from field sampling and pot experiment. As a result, the enrichment of phosphorus-solubilizing bacteria <italic>Pseudomonas</italic> and <italic>Enterobacter</italic> was consistent with the increased soil available phosphorus in <italic>M. micrantha</italic> rhizosphere. Furthermore, the pathogens of <italic>Fusarium oxysporum</italic> and <italic>Ralstonia solanacearum</italic> and pathogenic genes of type III secretion system (T3SS) were observed to be less abundant in <italic>M. micrantha</italic> rhizosphere, which might be attributed to the enrichment of biocontrol bacteria <italic>Catenulispora</italic>, <italic>Pseudomonas</italic>, and <italic>Candidatus Entotheonella</italic> and polyketide synthase (PKS) genes involved in synthesizing antibiotics and polyketides to inhibit pathogens. These findings collectively suggested that the enrichment of microbes involved in nutrient acquisition and pathogen suppression in the rhizosphere of <italic>M. micrantha</italic> largely enhances its adaptation and invasion to various environments.</p>