The structure and function of the global citrus rhizosphere microbiome
Nature Communications

2018 - Vol. 9 - n° 4894
Authors: Jin Xu, Yunzeng Zhang, Pengfan Zhang, Pankaj Trivedi, Nadia Riera, Yayu Wang, Xin Liu, Guangyi Fan, Jiliang Tang, Helvécio D. Coletta-Filho, Jaime Cubero, Xiaoling Deng, Veronica Ancona, Zhanjun Lu, Balian Zhong, M. Caroline Roper, Nieves Capote, Vi

Citrus is a globally important, perennial fruit crop whose rhizosphere microbiome is thought to play an important role in promoting citrus growth and health. Here, we report a comprehensive analysis of the structural and functional composition of the citrus rhizosphere microbiome. We use both amplicon and deep shotgun metagenomic sequencing of bulk soil and rhizosphere samples collected across distinct biogeographical regions from six continents. Predominant taxa include Proteobacteria, Actinobacteria, Acidobacteria and Bacteroidetes. The core citrus rhizosphere microbiome comprises Pseudomonas, Agrobacterium, Cupriavidus, Bradyrhizobium, Rhizobium, Mesorhizobium, Burkholderia, Cellvibrio, Sphingomonas, Variovorax and Paraburkholderia, some of which are potential plant beneficial microbes. We also identify over-represented microbial functional traits mediating plant-microbe and microbe-microbe interactions, nutrition acquisition and plant growth promotion in citrus rhizosphere. The results provide valuable information to guide microbial isolation and culturing and, potentially, to harness the power of the microbiome to improve plant production and health.