Abstract
An aerobic, Gram stain-negative,
oxidase-negative, catalase-positive, non-motile, non-spore-forming, rod-shaped,
light pink-pigmented bacterium, designated strain R135T, was
isolated from soil in Hwaseong, South Korea. Flexirubin-type pigments were
absent. A phylogenetic analysis based on the16S rRNA gene sequence revealed
that strain R135T formed a lineage within the family Sphingobacteriaceae of the phylum Bacteroidetes. It was distinct from the various species of the genus Pedobacter,
including P. terrae DS-57T
(98.13% sequence similarity), P.
alluvionis NWER-II11T (97.76% sequence similarity), P. suwonensis 15-52T (97.71%
sequence similarity), P. kyungheensis
KACC 16221T (97.37% sequence similarity), P. roseus CG-GP80T (97.24% sequence similarity), P.
soli 15-51T (97.23% sequence similarity), and P. sandarakinus
DS-27T (97.09% sequence similarity). The
major isoprenoid quinone was menaquinone-7 (MK-7), and the major polar lipid
was phosphatidylethanolamine. The major cellular fatty acids were summed
feature 3 (C16:1 w7c
and/or C16:1 w6c),
iso-C15:0, iso-C17:0 3-OH, and C16:0. The DNA
G+C content of strain R135T was 40.4 mol%. DNA-DNA hybridization
similarities between strain R135T and other members of the genus Pedobacter ranged from 25% to 43%. On
the basis of phenotypic, genotypic, and phylogenetic analysis, strain R135T
represents a novel species of genus Pedobacter, for which the name Pedobacter humicola
sp. nov. is proposed. The type strain of Pedobacter humicola
is R135T (= KEMB 9005-332T = KACC 18452T =
JCM 31010T).
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| SEM: Pedobacter humicola |
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