Int J Syst Evol Microbiol
December 2022
Int J Syst Evol Microbiol
August 2022
A novel bacterium, designated strain JHSY0214, was isolated from the gut of a Korean limpet, . Cells of strain JHSY0214 were Gram-stain-negative, strictly aerobic, yellow-pigmented, non-spore-forming, non-motile and showed a rod-coccus growth cycle. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the strain belonged to the genus , and was most closely related to KCTC 12764 (98.
View Article and Find Full Text PDFBackground: Invertebrates are a very attractive subject for studying host-microbe interactions because of their simple gut microbial community and host diversity. Studying the composition of invertebrate gut microbiota and the determining factors is essential for understanding their symbiotic mechanism. Cephalopods are invertebrates that have similar biological properties to vertebrates such as closed circulation system, an advanced nervous system, and a well-differentiated digestive system.
View Article and Find Full Text PDFThree aerobic, Gram-negative, and rod-shaped bacterial strains, designated strains G4M1, SM13, and L12M9, were isolated from the gut of Batillaria multiformis, Cellana toreuma, and Patinopecten yessoensis collected from the Yellow Sea in South Korea. All the strains grew optimally at 25°C, in the presence of 2% (w/v) NaCl, and at pH 7. These three strains, which belonged to the genus Polaribacter in the family Flavobacteriaceae, shared < 98.
View Article and Find Full Text PDFTwo Gram-stain-negative, mesophilic, strictly aerobic, nonspore forming, and yellow-pigmented strains with rod-shaped cells, designated H21R20 and H23M41, were isolated from the faeces of an Oriental stork (Ciconia boyciana). Based on 16S rRNA gene sequences, both strains showed the highest similarity (98.3-98.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
December 2021
Cultivation and isolation of gut bacteria are necessary for understanding their role in the intestinal ecosystem. We isolated a novel bacterium, designated strain BG01, from the faeces of a patient with Crohn's disease. Strain BG01 was a strictly anaerobic, rod-shaped, Gram-variable and endospore-forming bacterium.
View Article and Find Full Text PDFInt J Environ Res Public Health
September 2021
The distribution of organisms is governed by their habitat condition. We analyzed bacterial communities in the gut of the blackworm by pyrosequencing of the extracted intestinal metagenomic DNA. Blackworms were collected from two sampling sites with differences in irradiance and riparian vegetation, where site GP7 was covered by riparian vegetation and site GP8 was exposed to sunlight.
View Article and Find Full Text PDFPhenotypic and genomic analyses were performed to characterize two novel species, H23M54 and AMA3305, isolated from the faeces of the Oriental stork (Ciconia boyciana) and the cinereous vulture (Aegypius monachus), respectively. Strains H23M54 and AMA3305 showed the highest similarities of 16S rRNA gene sequences and complete genome sequences with Ornithinimicrobium cavernae CFH 30183 (98.5% of 16S rRNA gene sequence similarity and 82.
View Article and Find Full Text PDFViridans group streptococci are a serious health concern because most of these bacteria cause life-threatening infections, especially in immunocompromised and hospitalized individuals. We focused on two alpha-hemolytic Streptococcus strains (I-G2 and I-P16) newly isolated from an ileostomy effluent of a colorectal cancer patient. We examined their pathogenic potential by investigating their prevalence in human and assessing their pathogenicity in a mouse model.
View Article and Find Full Text PDFA novel Gram-stain-negative, aerobic, rod-shaped bacterium with a single polar flagellum, designated strain 2T18, was isolated from the gut of the freshwater mussel collected in the Republic of Korea. Phylogenetic analyses based on 16S rRNA gene sequences showed that the strain belonged to the genus . Strain 2T18 formed a monophyletic clade with KCTC 42982, KACC 11706 and KCTC 23839, with sequence similarities of 98.
View Article and Find Full Text PDFA polyphasic taxonomic approach was used to characterize two novel bacterial strains, designated as HDW11 and HDW19, isolated from intestine samples of the dark diving beetle and the diving beetle , respectively. Both isolates were Gram-stain-positive, facultatively anaerobic and non-motile. Strain HDW11 grew optimally at 30 °C, pH 8 and in the presence of 1% (w/v) NaCl.
View Article and Find Full Text PDFA polyphasic taxonomic approach was used to characterize three novel bacterial strains, designated as HDW12A, HDW-15B, and HDW15C, isolated from the intestine of fish species Odontobutis interrupta or Siniperca scherzeri. All isolates were obligate aerobic, non-motile bacteria, and grew optimally at 30°C. Phylogenetic analysis based on 16S rRNA sequences revealed that strain HDW12A was a member of the genus Nocardioides, and closely related to Nocardioides allogilvus CFH 30205 (98.
View Article and Find Full Text PDFA novel Gram-stain-negative, coccus-shaped, aerobic and motile bacterial strain, designated S12M18, was isolated from the gut of the Korean turban shell, . Phylogenetic analysis based on 16S rRNA gene sequences showed that strain S12M18 belonged to the genus and had the highest 16S rRNA gene sequence similarity twith HDW-19 (98.63 %).
View Article and Find Full Text PDFThree novel bacterial strains, HDW9A, HDW9B, and HDW9C, isolated from the intestine of the diving beetles Cybister lewisianus and Cybister brevis, were characterized as three novel species using a polyphasic approach. The isolates were Gram-staining-positive, strictly aerobic, non-motile, and rod-shaped. They grew optimally at 30°C (pH 7) in the presence of 0.
View Article and Find Full Text PDFCalf diarrhea is associated with enteric infections, and also provokes the overuse of antibiotics. Therefore, proper treatment of diarrhea represents a therapeutic challenge in livestock production and public health concerns. Here, we describe the ability of a fecal microbiota transplantation (FMT), to ameliorate diarrhea and restore gut microbial composition in 57 growing calves.
View Article and Find Full Text PDFA polyphasic taxonomic approach was used to characterize two novel bacterial strains, HDW17A and HDW17B, isolated from the intestine of the diving beetle Cybister lewisianus, and the dark diving beetle Hydrophilus acuminatus, respectively. Both strains were Gram-positive and facultative anaerobic cocci forming cream-colored colonies. The isolates grew optimally at 25°C, pH 7, in the presence of 0.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
January 2021
Castration of young males is widely used in the cattle industry to improve meat quality, but the mechanism linking hypogonadism and host metabolism is not clear. Here, we use metataxonomic and metabolomic approaches to evaluate the intestinal microbiota and host metabolism in male, castrated male (CtM), and female cattle. After pubescence, the CtM cattle harbor distinct ileal microbiota dominated by the family Peptostreptococcaceae and exhibit distinct serum and muscle amino acid profiles (i.
View Article and Find Full Text PDFThe orphan nuclear receptor ESRRA (estrogen related receptor alpha) is critical in mitochondrial biogenesis and macroautophagy/autophagy function; however, the roles of ESRRA in intestinal function remain uncharacterized. Herein we identified that ESRRA acts as a key regulator of intestinal homeostasis by amelioration of colonic inflammation through activation of autophagic flux and control of host gut microbiota. -deficient mice presented with increased susceptibility to dextran sodium sulfate (DSS)-induced colitis with upregulation of intestinal inflammation.
View Article and Find Full Text PDFA novel Gram-stain-positive, non-motile, non-spore-forming, coccobacillus-shaped, strictly aerobic bacterium, designated strain H23T48, was isolated from the faecal sample of an oriental stork collected from the Seoul Grand Park Zoo in Seoul, Republic of Korea. Optimal growth of strain H23T48 was observed at 30-37 °C, pH 8 and with 3 % (w/v) NaCl. 16S rRNA gene sequence-based phylogenetic analysis revealed that strain H23T48 was closely related to the genus , with 97.
View Article and Find Full Text PDFA novel, Gram-stain-positive, non-spore-forming, facultatively anaerobic bacterium, designated strain H21T32, was isolated from the faeces of an Oriental stork, . Cells formed cocci grouped in pairs, tetrads or conglomerates, and colonies on solid medium were pale yellow. Strain H21T32 belonged to the genus , family , order and class .
View Article and Find Full Text PDFInt J Syst Evol Microbiol
April 2020
A novel Gram-negative, obligately aerobic, rod-shaped and non-motile bacterium, designated strain K13M18, was isolated from the intestinal tract of a Korean indigenous fish, oily bitterling (). Strain K13M18 formed creamy-pink colonies on a marine agar plate. Results of phylogenetic analysis based on the 16S rRNA gene sequence similarity indicated that strain K13M18 was most closely related to DRYC-M-16, sharing 97.
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