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
Guangdong Laboratory for Lingnan Modern Agriculture (Shenzhen Branch), Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China.
Key Laboratory of Protein Function and Regulation in Agricultural Organisms of Guangdong Province, College of Life Science, South China Agricultural University, Guangzhou, China.
Front Microbiol. 2020 Jul 7;11:1462. doi: 10.3389/fmicb.2020.01462. eCollection 2020.
is a noxious invasive plant causing enormous economic losses and ecological damage. Soil microbiome plays an important role in the invasion process of , while little is known about its rhizosphere microbiome composition and function. In this study, we identified the distinct rhizosphere microbial communities of , by comparing them with those of two coexisting native plants ( and ) and the bulk soils, using metagenomics data from field sampling and pot experiment. As a result, the enrichment of phosphorus-solubilizing bacteria and was consistent with the increased soil available phosphorus in rhizosphere. Furthermore, the pathogens of and and pathogenic genes of type III secretion system (T3SS) were observed to be less abundant in rhizosphere, which might be attributed to the enrichment of biocontrol bacteria , , and 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 largely enhances its adaptation and invasion to various environments.
是一种有害的入侵植物，会造成巨大的经济损失和生态破坏。土壤微生物群落在其入侵过程中起着重要作用，而对其根际微生物群的组成和功能却知之甚少。在本研究中，我们通过将其与两种共存的本土植物（和）以及大量土壤的根际微生物群落进行比较，利用田间采样和盆栽实验的宏基因组学数据，确定了的不同根际微生物群落。结果表明，解磷细菌和的富集与根际土壤有效磷的增加一致。此外，在根际观察到和的病原体以及III型分泌系统（T3SS）的致病基因丰度较低，这可能归因于参与合成抗生素和聚酮化合物以抑制病原体的生物防治细菌、和以及聚酮合酶（PKS）基因的富集。这些发现共同表明，根际中参与养分获取和病原体抑制的微生物的富集在很大程度上增强了其对各种环境的适应和入侵能力。
