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Bergkemper, F. ; Schöler, A. ; Engel, M. ; Lang, F.* ; Krüger, J.* ; Schloter, M. ; Schulz, S.

Phosphorus depletion in forest soils shapes bacterial communities towards phosphorus recycling systems.

Environ. Microbiol. 18, 1988-2000 (2016)
Postprint DOI
Open Access Green
Phosphorus (P) is an important macronutrient for all biota on earth but similarly a finite resource. Microorganisms play on both sides of the fence as they effectively mineralize organic and solubilize precipitated forms of soil phosphorus, but conversely also take up and immobilize P. Therefore, we analyzed the role of microbes in two beech forest soils with high and low P content by direct sequencing of metagenomic DNA. For inorganic P solubilization, a significantly higher microbial potential was detected in the P-rich soil. This trait especially referred to Candidatus Solibacter usiatus, likewise one of the dominating species in the datasets. A higher microbial potential for efficient phosphate uptake systems (pstSCAB) was detected in the P-depleted soil. Genes involved in P starvation response regulation (phoB, phoR) were prevalent in both soils. This underlines the importance of effective phosphate (Pho) regulon control for microorganisms to use alternative P sources during phosphate limitation. Predicted genes were primarily harbored by Rhizobiales, Actinomycetales and Acidobacteriales.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Fumigation-extraction Method; Microbial Biomass; Phosphate-transport; Escherichia-coli; Alkaline-phosphatase; Organic Phosphorus; Sequencing Data; Plants; Genes; Ph
ISSN (print) / ISBN 1462-2912
e-ISSN 1462-2920
Quellenangaben Volume: 18, Issue: 6, Pages: 1988-2000 Article Number: , Supplement: ,
Publisher Wiley
Publishing Place Hoboken
Reviewing status Peer reviewed