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Jiyoun Kim,Geeta Chhetri,Inhyup Kim,Hyungdong Kim,Myung Kyum Kim,Taegun Seo 한국미생물학회 2019 The journal of microbiology Vol.57 No.11
A Gram-stain-negative, asporogenous, aerobic rods, motile by means of a single polar flagellum, catalase- and oxidase-positive, methylotrophic bacterium, designated 17Sr1-28T, was isolated from gamma ray-irradiated soil. The 16S rRNA gene sequence analysis showed that strain 17Sr1-28T was phylogenetically related to Methylobacterium currus PR1016AT (96.8%), Methylobacterium platani PMB02T (96.2%), Methylobacterium aquaticum DSM 16371T (96.3%), Methylobacterium tarhaniae N4211T (96.4%), Methylobacterium frigidaeris IER25-16T (95.8%), and Methylobacterium organophilum JCM 2833T (92.7%). The G+C content calculated based on genome sequence was 71.6%. The average nucleotide identity and in silico DNA-DNA hybridization values between strain 17Sr1- 28T and M. currus, M. platani, M. aquaticum, M. tarhaniae, M. frigidaeris, and M. organophilum were 77.7–90.4% and 22–39.6%, respectively. The major fatty acids of strain 17Sr1- 28T were summed feature 8 (C18:1 ω7c and/or C18:1 ω6c), and summed feature 3 (C16:1 ω7c and/or C16:1 ω6c). The predominant quinone was ubiquinone 10 and the major polar lipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, and phosphatidylglycerol. On the basis of the data from phenotypic tests and genotypic differences between strain 17Sr1-28T and its close phylogenetic relatives, strain 17Sr1-28T represents a new species belonging to the genus Methylobacterium, for which the name Methylobacterium terrae sp. nov. (= KCTC 52904T = NBRC 112873T) is proposed.
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Chhetri Geeta,Kim Inhyup,Kang Minchung,Kim Jiyoun,So Yoonseop,Seo Taegun 한국미생물학회 2022 The journal of microbiology Vol.60 No.1
Two novel Gram-negative, aerobic, asporogenous, motile, rodshaped, orange and white pigmented, designated as LEGU1T and G19T, were isolated from the roots of rice plants, collected from Goyang, South Korea. Phylogenetic analysis based on their 16S rRNA gene sequences revealed that they belonged to the genus Devosia and formed a different lineage and clusters with different members of the genus Devosia. These strains shared common chemotaxonomic features. In particular, they had Q-10 as the sole quinone, phosphatidylglycerol, diphosphatidylglycerol as the principal polar lipids and C16:0, C18:1 ω7c 11-methyl and summed feature 8 (comprising C18:1 ω7c/ C18:1 ω6c) as the main fatty acids. The draft genome sequences of strains LEGU1T and G19T were 3,524,978 and 3,495,520 bp in size, respectively. Their average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values were 72.8–81.9% and 18.7–25.1%, respectively, with each other and type strains of related species belonging to the genus Devosia, suggesting that these two strains represent novel species. The G + C content of strains LEGU1T and G19T were 62.1 and 63.8%, respectively. Of the two strains, only LEGU1T produced carotenoid and flexirubin-type pigment. Both strains produced siderophore and indole acetic acid (IAA) in the presence of L-tryptophan. Siderophore biosynthesis genes, auxin responsive genes and tryptophan biosynthesis genes were present in their genomes. The present study aimed to determine the detailed taxonomic positions of the strains using the modern polyphasic approach. Based on the results of polyphasic analysis, these strains are suggested to be two novel bacterial species within the genus Devosia. The proposed names are D. rhizoryzae sp. nov., and Devosia oryziradicis sp. nov., respectively. The plant growth promoting effects of these strains suggest that they can be exploited to improve rice crop productivity. The type strain of D. rhizoryzae is LEGU1T (KCTC 82712T = NBRC 114485T) and D. oryziradicis is G19T (KCTC 82688T = NBRC 114842T).
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오도은(Doeun Oh),조선구(Sunku Cho),이진기(Jinkee Lee),유인협(Inhyup Yu),김선익(Sunik Kim),고종민(Jongmin Ko),장문종(Munjong Jang) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.2Ⅲ
전력산업 구조개편으로 전력분야의 다원화, 복잡화, 이질화가 심화되고 있으며, 전력의 공급에서 수송, 소비에 이르기까지 과정의 부문별 관리에 따른 전력정보의 분산이 가속화되고 있다. 이러한 현상은 각 부문간 정보의 불일치를 가져오고 정보연계를 더욱 어렵게 하며 국가 전력정보의 공유와 통합을 위한 기반을 정치 취약하게 만들어 전력시스템 전체의 효율을 저하시키고, 정전과 가격급등과 같은 비상사태 발생 시 이를 방지하거나 파급효과를 축소시켜 사회적 비용을 절감시킬 수 있는 위험 회피를 쉽지 않게 한다. 따라서 전력의 공급에서 수송, 소비에 이르기까지 전력정보의 이질화, 다원화가 더 심화되기 전에 각 부문별 정보관리의 연계를 바탕으로 다양한 정책적 의사결정을 위한 국가 전력정보 통합관리 모델의 개발이 필요하다. 본 논문은 전력정보 통합관리 모델 개발에 대한 국외 연구개발 현황을 소개하고 국내의 실정에 적합한 전력정보 통합관리 모델 개발에 대해 기술하였다.
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