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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Taxonomical and functional microbial community selection in soybean rhizosphere

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Author(s):
Mendes, Lucas W. [1, 2] ; Kuramae, Eiko E. [1] ; Navarrete, Acacio A. [2, 1] ; van Veen, Johannes A. [1, 3] ; Tsai, Siu M. [2]
Total Authors: 5
Affiliation:
[1] Netherlands Inst Ecol, NIOO KNAW, Dept Microbial Ecol, NL-6708 PB Wageningen - Netherlands
[2] Univ Sao Paulo, CENA, Cell & Mol Biol Lab, Piracicaba - Brazil
[3] Leiden Univ, Inst Biol, Leiden - Netherlands
Total Affiliations: 3
Document type: Journal article
Source: ISME Journal; v. 8, n. 8, p. 1577-1587, AUG 2014.
Web of Science Citations: 179
Abstract

This study addressed the selection of the rhizospheric microbial community from the bulk soil reservoir under agricultural management of soybean in Amazon forest soils. We used a shotgun metagenomics approach to investigate the taxonomic and functional diversities of microbial communities in the bulk soil and in the rhizosphere of soybean plants and tested the validity of neutral and niche theories to explain the rhizosphere community assembly processes. Our results showed a clear selection at both taxonomic and functional levels operating in the assembly of the soybean rhizosphere community. The taxonomic analysis revealed that the rhizosphere community is a subset of the bulk soil community. Species abundance in rhizosphere fits the log-normal distribution model, which is an indicator of the occurrence of niche-based processes. In addition, the data indicate that the rhizosphere community is selected based on functional cores related to the metabolisms of nitrogen, iron, phosphorus and potassium, which are related to benefits to the plant, such as growth promotion and nutrition. The network analysis including bacterial groups and functions was less complex in rhizosphere, suggesting the specialization of some specific metabolic pathways. We conclude that the assembly of the microbial community in the rhizosphere is based on niche-based processes as a result of the selection power of the plant and other environmental factors. (AU)

FAPESP's process: 08/58114-3 - Monitoring the microbial diversity and functional activities in response to land-use changes and deforestation under soybean and sugarcane cultivations
Grantee:Tsai Siu Mui
Support type: Research Program on Global Climate Change - Thematic Grants
FAPESP's process: 11/51749-6 - Functional bioindicators for soil quality monitoring for sustainable management of sugarcane biomass production (BIOSQ)
Grantee:Tsai Siu Mui
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 10/20353-7 - Analysis of microbial communities in soils under different land uses on the frontier of agricultural expansion in Southwestern Amazonia
Grantee:Lucas William Mendes
Support type: Scholarships in Brazil - Doctorate