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Updated: Mar 22, 2026

Author Spotlight: Unraveling the Mysteries of Terrestrial Anaerobic Microorganisms in Uncharted Environments by In Situ Culturing
Published on: January 12, 2024
Abyssisolibacter fermentans gen. nov. sp. nov., isolated from deep sub-seafloor sediment
Wonduck Kim1, Jung-Hyun Lee1, Kae Kyoung Kwon2
1Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Ansan, 15627, Republic of Korea.
Abstract:
A Gram-staining-negative, thin rod-shaped, anaerobic bacterium designated MCWD3(T) was isolated from sediment of the deep sea in Ulleung Basin, East Sea, Korea. The ranges of temperature, pH and NaCl for growth of this strain were 15-40°C (optimum 29°C), 5.0-10.0 (optimum pH 6.5), and 1-5%, respectively. The major fatty acids were iso-C(15:0) (30%) and iso-C(15:0) dimethyl acetal (17%). The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, and unidentified aminophospholipids, phospholipids, and aminolipids. The fermentation product from yeast extract was acetate. Phylogenetic analysis based on 16S rRNA genes indicated that the isolate was related to Sporosalibacterium faouarense (92.8% sequence identity), Clostridiisalibacter paucivorans (92.6%), and Brassicibacter mesophilus (92.4%). However, the isolate was differentiated from these genera by both physiological and chemotaxonomical properties. On the basis of a polyphasic taxonomic analysis, we propose that MCWD3(T) represents a novel taxon with the name Abyssisolibacter fermentans gen. nov. sp. nov.
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