The novel Gram-stain-negative, rod-shaped, aerobic bacterial
strain DCR-13T was isolated from a native plant belonging
to the genus Campanula on Dokdo, an island in the
Republic of Korea. Comparative analysis of the 16S rRNA
gene sequence indicated that this strain is closely related to
Paraburkholderia peleae PP52-1T (98.43% 16S rRNA gene sequence
similarity), Paraburkholderia oxyphila NBRC 105797T
(98.42%), Paraburkholderia sacchari IPT 101T (98.28%), Paraburkholderia
mimosarum NBRC 106338T (97.80%), Paraburkholderia
denitrificans KIS30-44T (97.46%), and Paraburkholderia
paradise WAT (97.45%). This analysis of the 16S
rRNA gene sequence also suggested that DCR-13T and the
six closely related strains formed a clade within the genus
Paraburkholderia, but that DCR-13T was clearly separated
from the established species. DCR-13T had ubiquinone 8 as
its predominant respiratory quinone, and its genomic DNA
G + C content was 63.9 mol%. The isolated strain grew at a
pH of 6.0–8.0 (with an optimal pH of 6.5), 0–4% w/v NaCl
(with an optimal level of 0%), and a temperature of 18–42°C
(with an optimal temperature of 30°C). The predominant
fatty acids were C16:0, summed feature 8 (C18:1 ω7c/C18:1 ω6c),
C17:0 cyclo, C19:0 cyclo ω8c, summed feature 3 (C16:1 ω6c/C16:1
ω7c) and summed feature 2 (C12:0 aldehyde), and the major
polar lipids were phosphatidylglycerol and phosphatidylethanolamine.
On the basis of polyphasic evidence, it is proposed
that strain DCR-13T (= KCTC 62811T = LMG 30889T)
represents the type strain of a novel species, Paraburkholderia
dokdonella sp. nov.
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