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  • Environmental factors affect acidobacterial communities below the subgroup level in grassland and forest soils

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    Author(s)
    Naether, Astrid
    Foesel, Barbel U.
    Naegele, Verena
    Wust, Pia K.
    Weinert, Jan
    Bonkowski, Michael
    Alt, Fabian
    Oelmann, Yvonne
    Polle, Andrea
    Lohaus, Gertrud
    Gockel, Sonja
    Hemp, Andreas
    Kalko, Elisabeth K. V.
    Linsenmair, K. Eduard
    Pfeiffer, Simone
    Renner, Swen C.
    Schöning, Ingo
    Weisser, Wolfgang W.
    Wells, Konstans
    Fischer, Markus
    Overmann, Jorg
    Friedrich, Michael W.
    Griffith University Author(s)
    Wells, Konstans
    Year published
    2012
    Metadata
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    Abstract
    In soil, Acidobacteria constitute on average 20% of all bacteria, are highly diverse, and are physiologically active in situ. However, their individual functions and interactions with higher taxa in soil are still unknown. Here, potential effects of land use, soil properties, plant diversity, and soil nanofauna on acidobacterial community composition were studied by cultivation-independent methods in grassland and forest soils from three different regions in Germany. The analysis of 16S rRNA gene clone libraries representing all studied soils revealed that grassland soils were dominated by subgroup Gp6 and forest soils by ...
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    In soil, Acidobacteria constitute on average 20% of all bacteria, are highly diverse, and are physiologically active in situ. However, their individual functions and interactions with higher taxa in soil are still unknown. Here, potential effects of land use, soil properties, plant diversity, and soil nanofauna on acidobacterial community composition were studied by cultivation-independent methods in grassland and forest soils from three different regions in Germany. The analysis of 16S rRNA gene clone libraries representing all studied soils revealed that grassland soils were dominated by subgroup Gp6 and forest soils by subgroup Gp1 Acidobacteria. The analysis of a large number of sites (n = 57) by 16S rRNA gene fingerprinting methods (terminal restriction fragment length polymorphism [T-RFLP] and denaturing gradient gel electrophoresis [DGGE]) showed that Acidobacteria diversities differed between grassland and forest soils but also among the three different regions. Edaphic properties, such as pH, organic carbon, total nitrogen, C/N ratio, phosphorus, nitrate, ammonium, soil moisture, soil temperature, and soil respiration, had an impact on community composition as assessed by fingerprinting. However, interrelations with environmental parameters among subgroup terminal restriction fragments (T-RFs) differed significantly, e.g., different Gp1 T-RFs correlated positively or negatively with nitrogen content. Novel significant correlations of Acidobacteria subpopulations (i.e., individual populations within subgroups) with soil nanofauna and vascular plant diversity were revealed only by analysis of clone sequences. Thus, for detecting novel interrelations of environmental parameters with Acidobacteria, individual populations within subgroups have to be considered.
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    Journal Title
    Applied and Environmental Microbiology
    Volume
    78
    Issue
    20
    DOI
    https://doi.org/10.1128/AEM.01325-12
    Copyright Statement
    © 2012 American Society for Microbiology. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Microbial Ecology
    Publication URI
    http://hdl.handle.net/10072/173429
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    • Journal articles

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