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Updated: Jun 12, 2026

Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution
Published on: December 30, 2021
Hymenobacter Biocrusticola sp. nov., Isolated from Desert Biocrust
Yanying Zhao1,2, Xinyue Yun1,2, Kai Tang1,2
1Laboratory of Environmental Microbiology and Biotechnology in Arid and Cold Regions, College of Life Science, Inner Mongolia Agricultural University, Huhhot, 010018, PR, China.
None:
A pink, aerobic, Gram-stain-negative bacterium, strain B81T, was isolated from biological soil crust of a sandy desert in Northwestern China. Cellular growth of the strain was observed at pH 4.0-8.0 (optimum, pH 7.0), at 10-40 ℃ (optimum, 30 ℃) and with 0-2% (w/v) NaCl (optimum, 1.5%). Phylogenetic analyses based on 16S rRNA gene sequence indicated that strain B81T was most closely related to Hymenobacter busanensis MA3T and Hymenobacter coalescens WW84T with a similarity value about 97%. The only respiratory quinone was menaquinone-7. The major fatty acids were iso-C15:0, iso-C15:0 3-OH, anteiso-C15:0, summed feature 3 (C16:1 ω7c and/or C16:1 ω6c) and summed feature 4 (iso-C17:1 I and/or anteiso-C17:1 B) and the major polar lipids were composed of phosphatidyl ethanolamine, one unidentified aminophospholipid and five unidentified lipids. The genome size is 5.01 Mb and the DNA G + C content is 64.90%. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between strain B81T and its closest relative, H. busanensis MA3T, were 81.8% and 24.8%, respectively, which were higher than those with H. coalescens WW84T (79.9% and 23.4%). Based on phenotypic, chemotaxonomic and phylogenetic characteristics, strain B81T represents a novel species of the genus Hymenobacter, for which the name Hymenobacter biocrusticola sp. nov. is proposed. The type strain is B81T (= GDMCC 1.4953 T = KCTC 102338 T).
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