Phosphorus depletion in forest soils shapes bacterial communities towards phosphorus recycling systems
Phosphorus depletion in forest soils shapes bacterial communities towards phosphorus recycling systems
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DOI：
10.1111/1462-2920.13188
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发表时间：
2016-06-01
影响因子：
5.1
通讯作者：
Schulz, Stefanie
中科院分区：
文献类型：
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作者：
Bergkemper, Fabian;Schoeler, Anne;Schulz, Stefanie
磷（P）是地球上所有生物群的重要大量营养素，但同样是有限资源。微生物在围栏的两侧都发挥作用，因为它们有效地矿化有机物并溶解了沉淀的土壤磷的形式，但相反，也占据了。元基因组脱氧核糖核酸的测序。对于无机P溶解化，在富含P的土壤中检测到了显着更高的微生物电位。该特征特别提到candidatus silibacter usiatus，这同样是数据集中的主要物种之一。在p耗尽的土壤中检测到有效的磷酸盐吸收系统（PSCAB）的更高微生物潜力。在两种土壤中，参与P饥饿反应调节（PHOB，PHOR）的基因都普遍存在。这强调了有效的磷酸盐（PHO）调节量对微生物的重要性在磷酸盐限制期间使用替代P源。预测的基因主要由根瘤菌，放线菌和酸细菌饲养。
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 analysed the role of microbes in two beech forest soils with high and low P content by direct sequencing of metagenomic deoxyribonucleic acid. 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 data sets. 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 harboured by Rhizobiales, Actinomycetales and Acidobacteriales.