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https://www.readbyqxmd.com/read/29932388/deinococcus-koreensis-sp-nov-a-gamma-radiation-resistant-bacterium-isolated-from-river-water
#1
Kiwoon Baek, Eu Jin Chung, Gang-Guk Choi, Min-Kyu Kim, Sangyong Lim, Ahyoung Choi
A gamma radiation-resistant, Gram-stain-negative, rod-shaped bacterial strain, designated SJW1-2T , was isolated from freshwater samples collected from the Seomjin River, Republic of Korea. The 16S rRNA gene sequence analyses showed that strain SJW1-2T was most closely related to Deinococcus metalli 1PNM-19T (94.3 % sequence similarity) and formed a robust phylogenetic clade with other species of the genus Deinococcus. The optimum growth pH and temperature for the isolate were pH 7.0-7.5 and 25 °C, respectively...
June 22, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29927368/sphingomicrobium-arenosum-sp-nov-isolated-from-marine-sediment
#2
Qi Zhang, Rungravee Kanjanasuntree, Jong-Hwa Kim, Jung-Hoon Yoon, Ampaitip Sukhoom, Duangporn Kantachote, Wonyong Kim
A Gram-stain-negative, strictly aerobic, motile by one single flagellum, dark-orange pigmented and rod-shaped bacterial strain, designated CAU 1457T , was isolated from marine sediment in the Republic of Korea and its taxonomic position was investigated by using a polyphasic approach. The isolate grew optimally at 30 °C, at pH 6.0 and in the presence of 2 % (w/v) NaCl. Based on 16S rRNA gene sequences similarity, strain CAU 1457T belonged to the genus Sphingomicrobium and was related most closely to Sphingomicrobium astaxanthinifaciens JCM 18551T (98...
June 21, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29916796/lactobacillus-bambusae-sp-nov-isolated-from-traditional-fermented-ma-bamboo-shoots-in-taiwan
#3
Jia-Rong Guu, Li-Ting Wang, Moriyuki Hamada, Chihuei Wang, Ru-Wei Lin, Lina Huang, Koichi Watanabe
A Gram-stain-positive strain, BS-W1T , was isolated from a traditional fermented ma bamboo shoots (Dendrocalamus latiflorus Munro) product of Taiwan. It was rod-shaped, non-motile, non-haemolytic, asporogenous, facultatively anaerobic, heterofermentative and did not exhibit catalase or oxidase activities. Comparative analysis of 16S rRNA, pheS, rpoA and gyrB gene sequences demonstrated that the novel strain BS-W1T was a member of the genus Lactobacillus. On the basis of 16S RNA gene sequence similarity, the type strains of Lactobacillus oryzae (94...
June 19, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29916795/roseomonas-radiodurans-sp-nov-a-gamma-radiation-resistant-bacterium-isolated-from-gamma-ray-irradiated-soil
#4
Ju-Young Kim, Dong-Uk Kim, Myung-Suk Kang, Jun Hwee Jang, Su Jeong Kim, Min Ji Kim, Ju Yeon Lee, Yoon Seo Lee, Jing Zhang, Sangyong Lim, Myung Kyum Kim
A bacterial strain, designated 17Sr1-1T , was isolated from gamma ray-irradiated soil. Cells of this strain were Gram-stain-negative, strictly aerobic, motile and non-spore-forming rods. Growth occurred at 18-42 ˚C and pH 6.0-8.0, but no growth occurred at 2 % NaCl concentration. The major fatty acids of strain 17Sr1-1T were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c), iso-C17 : 1ω5c and C16 : 0. The polar lipid profile contained diphosphatidylglycerol, glycolipid, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and four unidentified lipids...
June 19, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29904063/biosynthetic-studies-on-teleocidins-in-streptomyces
#5
REVIEW
Ikuro Abe
Teleocidin B, with its unique indolactam-terpenoid scaffold, is a potent activator of protein kinase C. This short review summarizes our recent research progress on the biosynthesis of teleocidins in Streptomyces blastmyceticus NBRC 12747. We first identified the biosynthetic genes for teleocidin B, which include genes encoding a non-ribosomal peptide synthetase (tleA), a cytochrome P450 monooxygenase (tleB), an indol prenyltransferase (tleC), and a C-methyltransferase (tleD). Notably, the tleD gene is located outside the tleABC cluster...
June 14, 2018: Journal of Antibiotics
https://www.readbyqxmd.com/read/29893666/maribacter-maritimus-sp-nov-isolated-from-seawater
#6
Heeyoung Kang, Inseong Cha, Haneul Kim, Kiseong Joh
A novel Gram-stain-negative, motile by gliding and straight rod-shaped bacterial strain, designated HMF3635T , was isolated from seawater of the East Sea, Republic of Korea. Strain HMF3635T grew optimally on marine agar at 30 °C, pH 7.0-8.0 and 2.0 % NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain HMF3635T belonged to the genus Maribacter and was most closely related to Maribacter arenosus CAU 1321T (96.4 % sequence similarity) and Maribacter polysiphoniae KMM 6151T (96...
June 12, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29881874/pseudoruegeria-litorisediminis-sp-nov-a-novel-lipolytic-bacterium-of-the-family-rhodobacteraceae-isolated-from-a-tidal-flat
#7
Sooyeon Park, Ji-Min Park, Jung-Sook Lee, Tae-Kwnag Oh, Jung-Hoon Yoon
A lipolytic bacterial strain, designated BPTF-M5T , was isolated from a tidal flat sediment of the Yellow Sea in Republic of Korea, and identified by a polyphasic taxonomic approach. It was Gram negative, aerobic, non-motile and rod shaped. Strain BPTF-M5T grew optimally at 30 °C and in the presence of 2.0-3.0% (w/v) NaCl. A neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain BPTF-M5T fell within the clade comprising the type strains of Pseudoruegeria species. The novel strain exhibited the highest 16S rRNA gene sequence similarity value (98...
June 7, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29881873/zhongshania-ponticola-sp-nov-a-novel-lipolytic-bacterium-of-the-class-gammaproteobacteria-isolated-from-seawater
#8
Sooyeon Park, Ji-Min Park, Jung-Sook Lee, Jung-Hoon Yoon
A bacterial strain, designated GM-8T , which was isolated from seawater around Pohang in Republic of Korea, was subjected to a polyphasic taxonomic study. It was lipolytic, Gram-stain-negative, aerobic, non-motile and coccoid, ovoid, or rod-shaped. Strain GM-8T grew optimally at 30 °C and in the presence of 2.0-3.0% (w/v) NaCl. The phylogenetic trees of 16S rRNA gene sequences based on three algorithms showed that strain GM-8T joined the clade comprising the type strains of Zhongshania species. The novel strain exhibited the highest 16S rRNA gene sequence similarity value (98...
June 7, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29872901/sphingomonas-montis-sp-nov-isolated-from-forest-soil-of-low-altitude-mountain
#9
Dhiraj Kumar Chaudhary, Ram Hari Dahal, Jaisoo Kim
Strain DRJ-4T was isolated from forest soil of a low-altitude mountain and was taxonomically characterized by a polyphasic approach. This strain was yellow-colored, Gram-stain-negative, strictly aerobic, motile, non-sporulating, catalase-positive, oxidase-negative, and rod-shaped. Strain DRJ-4T was able to grow at 20-42 °C, pH 6.5-10.0, and 0-1.0% (w/v) NaCl concentration. Based on the 16S rRNA gene sequence analysis, strain DRJ-4T formed a distinct lineage within the members of the family Sphingomonadaceae of the phylum Proteobacteria and moderately related to Sphingomonas faucium E62-3T (96...
June 5, 2018: Current Microbiology
https://www.readbyqxmd.com/read/29872888/description-of-lacinutrix-salivirga-sp-nov-a-marine-member-of-the-family-flavobacteriaceae-isolated-from-seawater
#10
Jaewoo Yoon, Jung-Sook Lee, Keun-Chul Lee
A novel marine bacterium, designated KMU-57T , was isolated from seawater collected from the Republic of Korea, and it was characterized using polyphasic taxonomic methods. Strain KMU-57T was Gram-stain-negative, strictly aerobic, rod-shaped, motile and dark-yellow-pigmented. Comparative analysis based on the 16S rRNA gene sequence showed the affiliation of the isolate with members of the family Flavobacteriaceae of the phylum Bacteroidetes, and it had the greatest sequence similarity (97.6%) to Lacinutrix jangbogonensis PAMC 27137T ...
June 5, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29869978/amycolatopsis-antarctica-sp-nov-isolated-from-the-surface-of-an-antarctic-brown-macroalga
#11
Jian Wang, Sergio Leiva, Jiao Huang, Ying Huang
Two moderately psychrophilic actinobacterial strains, designated AU-G6T and AU-A3.2, isolated from the surface of an Antarctic macroalga, Adenocystis utricularis (Bory) Skottsberg, was taxonomically characterized based on a polyphasic investigation. The two strains had nearly identical 16S rRNA gene sequences and formed a distinct phyletic line within the genus Amycolatopsis of the family Pseudonocardiaceae. They were phylogenetically close to Amycolatopsis nigrescens JCM 14717T , Amycolatopsis minnesotensis JCM 14545T and Amycolatopsis magusensis DSM 45510T , with 16S rRNA gene sequence similarities of 97...
June 5, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29863068/mirilactams-c-e-novel-polycyclic-macrolactams-isolated-from-combined-culture-of-actinosynnema-mirum-nbrc-14064-and-mycolic-acid-containing-bacterium
#12
Shotaro Hoshino, Masahiro Ozeki, Chin Piow Wong, Huiping Zhang, Fumiaki Hayashi, Takayoshi Awakawa, Hiroyuki Morita, Hiroyasu Onaka, Ikuro Abe
Mycolic acid-containing bacteria (MACB) are known to activate cryptic natural product biosynthesis in co-cultures with actinobacteria. We cultured Actinosynnema mirum NBRC 14064, a producer of the mono-cyclic polyene macrolactam mirilactam A (6), with the MACB Tsukamurella pulmonis TP-B0596. As a result, three novel compounds (mirilactams C-E, 1-3) were produced in the co-culture conditions. Compounds 1-3 were likely derived from 6 by epoxidation and subsequent spontaneous cyclization. The chemical structures and stereochemistries of 1-3 were determined by spectroscopic analyses (NMR and MS), conformational searches in the optimized potentials for liquid simulations-3 (OPLS3) force field, and calculations of electronic circular dichroism (ECD)...
2018: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29804222/flavobacterium-ureilyticum-sp-nov-a-novel-urea-hydrolysing-bacterium-isolated-from-stream-bank-soil
#13
Ram Hari Dahal, Jaisoo Kim
A novel bacterium designated S-42T was isolated from stream bank soil. Cells were found to be aerobic, Gram staining-negative, oxidase-positive, catalase-negative, non-motile, non-spore-forming, rod-shaped, and yellow-pigmented. The strain can grow at 15-35 °C, pH 6.0-10.0, and at 0.5% (w/v) NaCl concentration. Urea was hydrolysed. Flexirubin-type pigments were absent. Phylogenetic analysis based on its 16S rRNA gene sequence revealed that strain S-42T formed a lineage within the family Flavobacteriaceae of the phylum Bacteroidetes that is distinct from various species of the genus Flavobacterium, including Flavobacterium maotaiense T9T (97...
May 26, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29792590/altererythrobacter-flavus-sp-nov-isolated-from-mangrove-sediment
#14
Hui Ma, Hao Ren, Lingfeng Huang, Yuanrong Luo
A Gram-negative, aerobic, non-motile, rod-shaped bacterium, designated MS1-4T , was isolated from mangrove sediment of the Jiulong River Estuary, Fujian Province, China. The isolate formed yellow colonies on ZB 2216E agar. Optimal growth was observed at pH 6.0, at 34 °C and in the presence of 4 % (w/v) NaCl. Strain MS1-4T shared highest 16S rRNA gene sequence similarity of 97.7 % with Altererythrobacter mangrovi C9-11T , followed by Altererythrobacter ishigakiensis JPCCMB0017T (97.2 %). Phylogenetic analysis indicated that strain MS1-4T formed a clade with A...
May 24, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29781801/methanonatronarchaeum-thermophilum-gen-nov-sp-nov-and-candidatus-methanohalarchaeum-thermophilum-extremely-halo-natrono-philic-methyl-reducing-methanogens-from-hypersaline-lakes-comprising-a-new-euryarchaeal-class-methanonatronarchaeia-classis-nov
#15
Dimitry Y Sorokin, Alexander Y Merkel, Ben Abbas, Kira S Makarova, W Irene C Rijpstra, M Koenen, Jaap S Sinninghe Damsté, Erwin A Galinski, Eugene V Koonin, Mark C M van Loosdrecht
Methanogenic enrichments from hypersaline lakes at moderate thermophilic conditions have resulted in the cultivation of an unknown deep lineage of euryarchaeota related to the class Halobacteria. Eleven soda lake isolates and three salt lake enrichment cultures were methyl-reducing methanogens that utilize C1 methylated compounds as electron acceptors and H2 or formate as electron donors, but they were unable to grow on either substrates alone or to form methane from acetate. They are extreme halophiles, growing optimally at 4 M total Na+ and the first representatives of methanogens employing the 'salt-in' osmoprotective mechanism...
May 21, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29757127/sulfurovum-denitrificans-sp-nov-an-obligately-chemolithoautotrophic-sulfur-oxidizing-epsilonproteobacterium-isolated-from-a-hydrothermal-field
#16
Koji Mori, Kaoru Yamaguchi, Satoshi Hanada
A novel marine sulfur-oxidizing bacterium, designated strain eps51T , was isolated from a surface rock sample collected from the hydrothermal field of Suiyo Seamount on the Izu-Bonin Arc in the Western Pacific Ocean. This bacterium was Gram-staining-negative, non-motile and rod-shaped. Strain eps51T grew chemolithoautotrophically, by sulfur-oxidizing respiration with elemental sulfur and thiosulfate as electron donors and used only carbon dioxide as a carbon source. Oxygen and nitrate were used as its electron acceptors...
May 14, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29745867/arenimonas-halophila-sp-nov-isolated-from-soil
#17
Rungravee Kanjanasuntree, Jong-Hwa Kim, Jung-Hoon Yoon, Ampaitip Sukhoom, Duangporn Kantachote, Wonyong Kim
A Gram-staining-negative, aerobic, non-motile, rod-shaped bacterium, designated CAU 1453T , was isolated from soil and its taxonomic position was investigated using a polyphasic approach. Strain CAU 1453T grew optimally at 30 °C and at pH 6.5 in the presence of 1 % (w/v) NaCl. Phylogenetic analysis based on the 16S rRNA gene sequences revealed that CAU 1453T represented a member of the genus Arenimonas and was most closely related to Arenimonas donghaensis KACC 11381T (97.2 % similarity). CAU 1453T contained ubiquinone-8 (Q-8) as the predominant isoprenoid quinone and iso-C15 : 0 and iso-C16 : 0 as the major cellular fatty acids...
May 10, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29737366/dyadobacter-flavus-sp-nov-and-dyadobacter-terricola-sp-nov-two-novel-members-of-the-family-cytophagaceae-isolated-from-forest-soil
#18
Ram Hari Dahal, Jaisoo Kim
Two strains of bacteria designated strains S-53T and A27T were isolated from forest soil and subjected to polyphasic characterization. Cells were aerobic, Gram-staining-negative, catalase- and oxidase- positive, non-motile, non-spore-forming, rod-shaped, and yellow-pigmented. Flexirubin-type pigments were present. Both strains were positive for PNPG, hydrolysed casein, and tyrosine. A phylogenetic analysis based on its 16S rRNA gene sequence revealed that strains S-53T and A27T formed a lineage within the family Cytophagaceae that were distinct from various members of the genus Dyadobacter (98...
May 8, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29728383/a-fungal-p450-from-thanatephorus-cucumeris-with-novel-steroid-hydroxylation-capabilities
#19
Wei Lu, Xi Chen, Jinhui Feng, Yun-Juan Bao, Yu Wang, Qiaqing Wu, Dunming Zhu
In this study, we identified a P450 enzyme (STH10) and an oxidoreductase (POR) from Thanatephorus cucumeris NBRC 6298 by a combination of transcriptome sequencing and heterologous expression in Pichia pastoris The biotransformation of 11-deoxycortisol was performed by using the Pichia pastoris whole cells co-expressing sth10 and por , and the product analysis indicated that the STH10 enzyme possessed steroidal 19- and 11β-hydroxylase activities. This is a novel fungal P450 enzyme with 19-hydroxylase activity, which is different from the known steroidal aromatase CYP19 and CYP11B families of enzymes...
May 4, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29721829/tardibacter-chloracetimidivorans-gen-nov-sp-nov-a-novel-member-of-the-family-sphingomonadaceae-isolated-from-an-agricultural-soil-from-jeju-island-in-republic-of-korea
#20
Hyosun Lee, Dong-Uk Kim, Sooyeon Park, Jung-Hoon Yoon, Jae-Hyung Ahn, Jong-Ok Ka
A pale yellow bacterial strain, designated JJ-A5T , was isolated form an agricultural soil from Jeju Island in Republic of Korea. Cells of the strain were Gram-stain-negative, motile, flagellated and rod-shaped. The strain grew at 15-30°C, pH 6.0-9.0, and in the presence of 0-1.5% (w/v) NaCl. Growth occurred on R2A, but not on Luria-Bertani agar, nutrient agar, trypticase soy agar and MacConkey agar. The strain utilized alachlor as a sole carbon source for growth. The strain JJ-A5T showed 16S rRNA gene sequence similarities lower than 95...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
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