Open AccessChitinophaga deserti sp. nov., isolated from desert soil
Author(s) -
Xianhui Kong,
Dian Chen,
Junwei Huang,
Xiaokun Cheng,
Jiandong Jiang
Publication year - 2019
Publication title -
international journal of systematic and evolutionary microbiology
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 173
eISSN - 1466-5034
pISSN - 1466-5026
DOI - 10.1099/ijsem.0.003395
Subject(s) - 16s ribosomal rna , strain (injury) , biology , genome size , bacteria , glycolipid , microbiology and biotechnology , gene , bacterial strain , genome , genetics , biochemistry , anatomy
An aerobic bacterial strain, designated XJ-2 T , was isolated from a soil sample collected from Gurbantunggut Sandy Desert in PR China. Cells of strain XJ-2 T were Gram-stain-negative, non-motile, rod-shaped and non-spore-forming. The new isolate grew well at 10-37 °C (optimum, 28-30 °C), pH 6.0-11.0 (pH 7.0) and 0-1 % (w/v) NaCl (0 %). The 16S rRNA gene sequence of strain XJ-2 T showed the highest similarity to that of Chitinophaga rhizosphaerae T16R-86 T (99.0 %), followed by Chitinophaga barathri YLT18 T (97.0 %), Chitinophagahumicola Ktm-2 T (96.7 %) and Chitinophaga niabensis JS13-10 T (96.4 %). The major menaquinone of strain XJ-2 T was menaquinone 7 and the predominant fatty acids (>5 %) were iso-C15 : 0, C16 : 1ω5c and iso-C17 : 0 3-OH. The polar lipids consisted of phosphatidylethanolamine, an unidentified glycolipid, three unidentified aminolipids and five unidentified lipids. The genome size was 6.33 Mb, comprising 5268 predicted genes with a G+C content of 41.5 mol%. The DNA G+C content was 50.5 mol% based on total genome calculations. The average nucleotide identity and the digital DNA-DNA hybridization values between strain XJ-2 T and strain T16R-86 T were 79.6 and 22.3 %, respectively. DNA-DNA relatedness between strain XJ-2 T and strain YLT18 T was 17.0 %. Based on the physiological, biochemical and chemotaxonomic characteristics, strain XJ-2 T represents a novel species of the genus Chitinophaga, for which the name Chitinophagadeserti sp. nov. is proposed. The type strain is XJ-2 T (KCTC 62443 T =CCTCC AB 2018019 T ).