A pale yellow bacterial strain, designated JJ-A5T, was isolated
form an agricultural soil from Jeju Island in Republic of
Korea. Cells of the strain were Gram-stain-negative, motile,
flagellated and rod-shaped. The strain grew at 15–30°C, pH
6.0–9.0, and in the presence of 0–1.5% (w/v) NaCl. Growth
occurred on R2A, but not on Luria-Bertani agar, nutrient agar,
trypticase soy agar and MacConkey agar. The strain utilized
alachlor as a sole carbon source for growth. The strain JJ-A5T
showed 16S rRNA gene sequence similarities lower than
95.4% with members of the family Sphingomonadaceae. Phylogenetic
analysis showed that the strain belongs to the family
Sphingomonadaceae and strain JJ-A5T was distinctly separated
from established genera of this family. The strain contained
Q-10 as dominant ubiquinone and spermidine as major
polyamine. The predominant cellular fatty acids were
summed feature 8 (C18:1 ω7c and/or C18:1 ω6c), summed feature
3 (C16:1 ω7c and/or C16:1 ω6c), 11-methyl C18:1 ω7c, C16:0
and C14:0 2-OH. The major polar lipids were phosphatidylethanolamine,
phosphatidylglycerol, sphingoglycolipid, and
phosphatidylcholine. The DNA G + C content of the strain
was 62.7 mol%. On the basis of the phenotypic, genomic and
chemotaxonomic characteristics, strain JJ-A5T is considered
to represent a novel genus and species within the family
Sphingomonadaceae, for which the name Tardibacter chloracetimidivorans
gen. nov., sp. nov. is proposed. The type
strain of Tardibacter chloracetimidivorans is JJ-A5T (= KACC
19450T = NBRC 113160T).
Citations
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