Deinococcus planocerae sp. nov., isolated from a marine flatworm

Abstract

A Gram-positive, non-motile and coccoid strain, designated XY-FW106, was isolated from a marine flatworm identified to be Planocera sp. The 16S rRNA gene sequence of this pink organism was consistent with membership of the genus Deinococcus, with high sequence similarity to Deinococcus aetherius ST0316 (94.7%). The optimum growth temperature range of the strain XY-FW106 was found to be 25-30 °C and optimum growth occurs at pH 7.2-7.4 without NaCl. The strain XY-FW106 was found to contain unidentified glycolipids, unidentified phosphoglycolipids, unidentified phospholipids and unidentified lipids, which differed from those of closely related species. Menaquinone MK-8 was identified as the major respiratory quinone and the predominant cellular fatty acids were found to be Summed Feature 3 (C ω7c/C ω6c), C, iso-C, and Summed Feature 8 (C ω7c/C ω6c). The DNA G+C content was determined to be 70.2 mol%. The biochemical and chemotaxonomic data together suggest that the strain represents a new species for which the name Deinococcus planocerae sp. nov. is proposed. The type strain is XY-FW106 (=MCCC 1K01499=KCTC 33809).

Biological and Chemical Diversity of Bacteria Associated with a Marine Flatworm

“…In these years, there is a growing interest in Pseudovibrio species as more and more isolates have been identified from sponges, corals, and sea squirts and, among them, some strains have genomic interactions with host marine invertebrates and gene clusters for producing secondary metabolites to protect the host from pathogens [ 27 ]. Another new species strain, XY-FW106, was characterized to be Deinococcus planocerae [ 17 ]. Interestingly, XY-FW106 showed resistance against ultraviolet irradiation [ 28 ], which might provide some protective function for the survival of the host flatworm, which lived in the shallow waters.…”

“…There is doubt that TTX and its analogs might be produced by the endogenous/symbiotic bacteria of these flatworms [ 13 ]. Unfortunately, only a handful studies [ 14 , 15 , 16 , 17 ] have been carried out to investigate the microorganisms associated with flatworms. Gruber-Vodicka et al [ 14 ] discovered the symbiotic relationship between Paracatenula galateia and an uncultured sulfur-oxidizing Alphaproteobacteria strain.…”

“…Gruber-Vodicka et al [ 14 ] discovered the symbiotic relationship between Paracatenula galateia and an uncultured sulfur-oxidizing Alphaproteobacteria strain. Xu et al [ 15 ], Zhang et al [ 16 ] and Lin et al [ 17 ] described the identification of new bacteria species isolated from a marine flatworm Paraplanocera sp. Since Acoelomorpha flatworms had been excluded from Platyhelminthes to be an independent phylum [ 18 ], the symbiotic relationship and chemical defense between algae and Acoelomorpha flatworms will not be discussed in this study.…”

Skin Microbiota of the Captive Giant Panda (Ailuropoda Melanoleuca) and the Distribution of Opportunistic Skin Disease-Associated Bacteria in Different Seasons

“…Arthrobacter was associated with spring, Kocuria and Deinococcus were associated with summer, Acinetobacter was associated with autumn, and Streptococcus was associated with winter. These bacterial taxa have been isolated from the environment as well as animals and physiologically characterized (25)(26)(27)(28)(29)(30)(31)(32). Streptococcus is a common resident of human skin.…”