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dc.contributor.authorSpring, Stefan
dc.contributor.authorBunk, Boyke
dc.contributor.authorSpröer, Cathrin
dc.contributor.authorRohde, Manfred
dc.contributor.authorKlenk, Hans-Peter
dc.date.accessioned2018-05-30T13:17:00Z
dc.date.available2018-05-30T13:17:00Z
dc.date.issued2018-04-26
dc.identifier.pmid29697183
dc.identifier.urihttp://hdl.handle.net/10033/621382
dc.description.abstractAnaerobic strains affiliated with a novel order-level lineage of the Phycisphaerae class were retrieved from the suboxic zone of a hypersaline cyanobacterial mat and anoxic sediments of solar salterns. Genome sequences of five isolates were obtained and compared with metagenome-assembled genomes representing related uncultured bacteria from various anoxic aquatic environments. Gene content surveys suggest a strictly fermentative saccharolytic metabolism for members of this lineage, which could be confirmed by the phenotypic characterization of isolates. Genetic analyses indicate that the retrieved isolates do not have a canonical origin of DNA replication, but initiate chromosome replication at alternative sites possibly leading to an accelerated evolution. Further potential factors driving evolution and speciation within this clade include genome reduction by metabolic specialization and rearrangements of the genome by mobile genetic elements, which have a high prevalence in strains from hypersaline sediments and mats. Based on genetic and phenotypic data a distinct group of strictly anaerobic heterotrophic planctomycetes within the Phycisphaerae class could be assigned to a novel order that is represented by the proposed genus Sedimentisphaera gen. nov. comprising two novel species, S. salicampi gen. nov., sp. nov. and S. cyanobacteriorum gen. nov., sp. nov. This article is protected by copyright. All rights reserved.en_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectDNA replicationen_US
dc.subjectPhycisphaeraeen_US
dc.subjectfermentationen_US
dc.subjecthalophilesen_US
dc.subjectsedimentsen_US
dc.subjectspeciationen_US
dc.titleGenome biology of a novel lineage of planctomycetes widespread in anoxic aquatic environments.en_US
dc.typeArticleen_US
dc.contributor.departmentHelmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstr. 7, 38124 Braunschweig, Germany.en_US
refterms.dateFOA2018-05-30T13:17:00Z


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