Dataset Information

Bacterial diversity in the rhizosphere of maize and the surrounding carbonate-rich bulk soil.

ABSTRACT: Maize represents one of the main cultivar for food and energy and crop yields are influenced by soil physicochemical and climatic conditions. To study how maize plants influence soil microbes we have examined microbial communities that colonize maize plants grown in carbonate-rich soil (pH 8.5) using culture-independent, PCR-based methods. We observed a low proportion of unclassified bacteria in this soil whether it was planted or unplanted. Our results indicate that a higher complexity of the bacterial community is present in bulk soil with microbes from nine phyla, while in the rhizosphere microbes from only six phyla were found. The predominant microbes in bulk soil were bacteria of the phyla Acidobacteria, Bacteroidetes and Proteobacteria, while Gammaproteobacteria of the genera Pseudomonas and Lysobacter were the predominant in the rhizosphere. As Gammaproteobacteria respond chemotactically to exudates and are efficient in the utilization of plants exudate products, microbial communities associated to the rhizosphere seem to be plant-driven. It should be noted that Gammaproteobacteria made available inorganic nutrients to the plants favouring plant growth and then the benefit of the interaction is common.

SUBMITTER: Garcia-Salamanca A

PROVIDER: S-EPMC3815383 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature

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Bacterial diversity in the rhizosphere of maize and the surrounding carbonate-rich bulk soil.

García-Salamanca Adela A Molina-Henares M Antonia MA van Dillewijn Pieter P Solano Jennifer J Pizarro-Tobías Paloma P Roca Amalia A Duque Estrella E Ramos Juan L JL

Microbial biotechnology 20120806 1

Maize represents one of the main cultivar for food and energy and crop yields are influenced by soil physicochemical and climatic conditions. To study how maize plants influence soil microbes we have examined microbial communities that colonize maize plants grown in carbonate-rich soil (pH 8.5) using culture-independent, PCR-based methods. We observed a low proportion of unclassified bacteria in this soil whether it was planted or unplanted. Our results indicate that a higher complexity of the b ...[more]

PMID: 22883414

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Dataset Information

Bacterial diversity in the rhizosphere of maize and the surrounding carbonate-rich bulk soil.

Publications

Bacterial diversity in the rhizosphere of maize and the surrounding carbonate-rich bulk soil.

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