Soil bacterial communities of three types of plants from ecological restoration areas and plant-growth promotional benefits of Microbacterium invictum (strain X-18)

作者：Chao Liu, Jiayao Zhuang, Jie Wang, Guohua Fan, Feng Ming, Shutong Zhang · 发表于：Frontiers in Microbiology · 年份：2022 · DOI：10.3389/fmicb.2022.926037 · 被引用次数：39 · 研究领域：Plant-Microbe Interactions and Immunity、Mycorrhizal Fungi and Plant Interactions、Plant Parasitism and Resistance

Microbial-assisted phytoremediation promotes the ecological restoration of high and steep rocky slopes. To determine the structure and function of microbial communities in the soil in response to changes in soil nutrient content, the bacterial communities of rhizospheric soil from three types of plants, i.e., Robinia pseudoacacia , Pinus massoniana , and Cynodon dactylon , were analyzed using Illumina sequencing technology. High-quality sequences were clustered at the 97% similarity level. The dominant genera were found to be RB41 , Gemmatimonas , Sphingomonas , Bradyrhizobium, and Ellin6067 . The Tukey HSD (honestly significant difference) test results showed that the abundance of RB41 and Gemmatimonas were significantly different among three types of plants ( p < 0.01 ). The relative abundances of RB41 (13.32%) and Gemmatimonas (3.36%) in rhizospheric soil samples from R. pseudoacacia were significantly higher than that from P. massoniana (0.16 and 0.35%) and C. dactylon (0.40 and 0.82%), respectively. The soil chemical properties analyses suggested that significant differences in rhizospheric soil nutrient content among the three plant types. Especially the available phosphorus, the content of it in the rhizospheric soil of R. pseudoacacia was about 280% ( P. massoniana ) and 58% ( C. dactylon ) higher than that of the other two plants, respectively. The soil bacterial communities were further studied using the correlation analysis and the Tax4Fun analysis. A signif...