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Agricultural soil and drilosphere as reservoirs of new and unusual ssimilators of 2,4-Dichlorophenol Carbon

Title data

Dallinger, Anja ; Horn, Marcus A.:
Agricultural soil and drilosphere as reservoirs of new and unusual ssimilators of 2,4-Dichlorophenol Carbon.
In: Environmental Microbiology. Vol. 16 (2014) Issue 1 . - pp. 84-100.
ISSN 1462-2920
DOI: https://doi.org/10.1111/1462-2920.12209

Abstract in another language

2,4-Dichlorophenol (2,4-DCP) is a potential soil and groundwater contaminant. Earthworms modulate growth and activities of soil microbiota. Thus, active 2,4-DCP degraders in agricultural soil and drilosphere (i.e., burrow walls, gut content, and cast) were identified by comparative amplicon pyrosequencing based 16S rRNA stable isotope probing (CAP-SIP) in soil columns. In situ relevant concentrations of [U-13C]2,4-DCP were consumed in soil within 19 and 41 days in the presence and absence of the endogeic earthworm Aporrectodea caliginosa, respectively. [U-14C]2,4-DCP mineralization was higher in cast, burrow wall, and soil from columns with than without earthworms. [U-14C]2,4-DCP mineralization was lowest in gut contents. Data indicated a strong impact of earthworms on the active microbial community. Novosphingobium, Comamonas, and Desulfitobacterium sp. assimilated 2,4-DCP-[13C] in the absence of earthworms. Pseudomonas, Flavobacterium, and Clostridium sp. assimilated 2,4-DCP-[13C] in the drilosphere. Novosphingobium and Variovorax related taxa dominated [U-13C]2,4-DCP consumers in soil slurries with drilosphere and bulk soil material. 16S rRNA sequences suggested species level novelty. The collective data demonstrates that new Bacteroidetes and Alpha-/Betaproteobacteria were involved in 2,4-DCP-C transformation, and indicated that diverse and hitherto unknown microbes associated with carbon flow from 2,4-DCP are shaped by earthworms.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER117588
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Ecological Microbiology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 22 Jul 2015 05:41
Last Modified: 22 Jul 2015 05:41
URI: https://eref.uni-bayreuth.de/id/eprint/16957