The root enrichment of bacteria is consistent across different stress-resistant plant species

PeerJ

article

Feng Huang¹  Congyi Zhu²  Minli Huang³  Xiaobing Song¹  Aitian Peng¹ 

[1]Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of High Technology for Plant Protection

[2]Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization ,(MOA) & Guangdong Province Key Laboratory of Tropical and Subtropical Fruit Tree Research, Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences

[3]Lichuan Bureau of Natural Resources

关键词: Microbiota;    Bacteria;    Amplicon sequencing;    Rhizosphere community;    Root;    Plant-microbe interaction;    Abiotic stress;    Pantoea;    Microbial richness;    Microbial diversity;   

DOI  :  10.7717/peerj.14683

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Bacteria, inhabiting around and in plant roots, confer many beneficial traits to promote plant growth and health. The secretion of root exudates modulates the nutritional state of the rhizosphere and root area, further selecting specific bacteria taxa and shaping the bacteria communities. Many studies of the rhizosphere effects have demonstrated that selection by the plant rhizosphere consistently enriches a set of bacteria taxa, and this is conserved across different plant species. Root selection effects are considered to be stronger than the rhizosphere selection effects, yet studies are limited. Here, we focus on the root selection effects across a group of 11 stress-resistant plant species. We found that the root selection consistently reduced the alpha diversity (represented by total number of observed species, Shannon’s diversity, and phylogenetic diversity) and altered the structure and composition of bacteria communities. Furthermore, root selection tended to enrich for clusters of bacteria genera including Pantoea, Akkermansia, Blautia, Acinetobacter, Burkholderia-Paraburkholderia, Novosphingobium, Massilia, Pseudomonas, Chryseobacterium, and Stenotrophomonas. Our study offers some basic knowledge for understanding the microbial ecology of the plant root, and suggests that several bacteria genera are of interest for future studies.

【 授权许可】

CC BY