Pseudomonas mangrovi sp. nov., isolated from mangrove soil
2019
A Gram-stain-negative, aerobic, non-motile, short-rod-shaped bacterium, designated as strain TC11T, was isolated from rhizosphere soil of mangrove forest (Kandeliaobovata) in Fugong village, Zhangzhou, Fujian, China. Strain TC11T grew at 15–45 °C (optimum, 35 °C), 0–8 % (w/v) NaCl (optimum, 1 %, w/v) and pH 5.5–9.5 (optimum, pH 7.5). Phylogenetic analyses revealed that strain TC11T belonged to a clade of the genus
Pseudomonas
and showed the highest sequence similarity of 98.4 % to
Pseudomonas fluvialis
ASS-1T, followed by
Pseudomonas oleovorans
subsp.
oleovorans
DSM 1045T (97.9 %),
Pseudomonas indoloxydans
JCM 14246T (97.7 %),
Pseudomonas guguanensis
JCM 18416T(97.6 %) and
Pseudomonas alcaliphila
JCM 10630T (97.5 %) on the basis of their 16S rRNA gene sequences. The DNA G+C content was 64.3 mol%. In silico DNA–DNA hybridization and average nucleotide identity values between strain TC11T and the reference strains were 19–22 % and 72–78 %, respectively. Studies based on the three housekeeping genes, rpoB, gyrB and rpoD, further confirmed that strain TC11T is a novel member of the genus
Pseudomonas
. The major fatty acids of strain TC11Twere C16 : 0, summed feature 8 (C18 : 1ω6c/C18 : 1ω7c) and summed feature 3 (C16 : 1ω7c/C16 : 1ω6c). The sole isoprenoid quinone was Q-9. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. Based on the phenotypic, chemotaxonomic and phylogenetic properties, strain TC11T represents a novel species of the genus
Pseudomonas
, for which the name
Pseudomonas
mangrovi sp. nov., is proposed. The type strain is TC11T (=KCTC 62159=MCCC 1K03499).
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