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Updated: Jun 16, 2026

Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
Miniimonas arenae gen. nov., sp. nov., an actinobacterium isolated from sea sand
Harumi Ue1, Yoshihide Matsuo2, Hiroaki Kasai3
1Institute of Molecular and Cellular Biosciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-Ku, Tokyo 113-0032, Japan.
Abstract:
A Gram-positive, non-motile, coccoid- to rod-shaped, non-spore-forming bacterium, designated strain YM18-15(T), was isolated from sea sand and studied using a polyphasic taxonomic approach. Strain YM18-15(T) grew under both aerobic and anaerobic conditions. The cell-wall peptidoglycan type was A4β and ornithine was the diagnostic diamino acid. The polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol and an unknown phospholipid, MK-8(H(4)) was the major menaquinone and the predominant fatty acids were anteiso-C(15 : 0) and C(16 : 0). The DNA G+C content was 74.2 mol%. High 16S rRNA gene sequence similarities (96.3-97.3 %) were found with the sequences of the type strains of the three genera of the family Beutenbergiaceae. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YM18-15(T) formed a clade with Serinibacter salmoneus, Salana multivorans and Beutenbergia cavernae. Strain YM18-15(T) differed from these three type strains in chemotaxonomic characteristics and in 16S rRNA gene signature nucleotides. Based on genetic and chemotaxonomic evidence, it is suggested that strain YM18-15(T) represents a novel species of a new genus within the family Beutenbergiaceae, for which the name Miniimonas arenae gen. nov., sp. nov. is proposed. The type strain of the type species is YM18-15(T) (=NBRC 106267(T)=KCTC 19750(T)=MBIC 08348(T)).
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