Abstract：
:A Gram positive, thermophilic, and filamentous bacterium, designated strain GIESS004(T), was isolated from a sludge compost from Guangzhou, China. Growth occurred at 45-55 °C (optimum 50-53 °C) and pH 6.0-10.0 (optimum pH 7.0-7.5). The organism formed cream-yellow colonies with radial wrinkles. Aerial mycelium was not produced in any of the growth media tested. Single spores were produced along the substrate hyphae. Strain GIESS004(T) contained MK-7 as the predominant menaquinone and iso-C(16:0), iso-C(15:0) and iso-C(17:0) as the major cellular fatty acids. The cell wall contained meso-diaminopimelic acid. The DNA G+C content was 60.7 mol%. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain GIESS004(T) was associated with the genus Planifilum and formed a cluster with its closest relative of Planifilum composti P8(T) (99.5 % similarity). However, the DNA-DNA pairing study showed that the isolate displayed reassociation value of only 57.6 ± 2.3 % with P. composti P8(T). On the basis of the polyphasic taxonomic results, strain GIESS004(T) (= CCTCC AB2013107(T) = MCCC 1K00414(T)) is designated as the type strain of a novel species of the genus Planifilum, for which the name Planifilum caeni sp. nov. is proposed.
journal_name
Curr Microbioljournal_title
Current microbiologyauthors
Yu Z,Wu C,Yang GQ,Zhou SGdoi
10.1007/s00284-014-0693-6subject
Has Abstractpub_date
2015-01-01 00:00:00pages
135-40issue
1eissn
0343-8651issn
1432-0991journal_volume
70pub_type
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