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Hymenobacter rigui sp. nov., isolated from wetland freshwater.
Baik, Keun Sik,Seong, Chi Nam,Moon, Eun Young,Park, Yoon-Dong,Yi, Hana,Chun, Jongsik Society for General Microbiology 2006 International journal of systematic and evolutiona Vol.56 No.9
<P>A non-motile, rod-shaped and pinkish-red-pigmented bacterium, designated strain WPCB131(T), was isolated from freshwater of Woopo wetland, Republic of Korea. Phylogenetic analysis based on 16S rRNA gene sequencing indicated that this isolate represents a novel member of the genus Hymenobacter with sequence similarities of 93.2-95.5 % to known Hymenobacter species. No other taxa in the phylum Bacteroidetes showed more than 90 % sequence similarity to the isolate. Cells were Gram-negative, oxidase-negative and catalase-positive. Optimum growth was observed at pH 6 and 30 degrees C. The major fatty acids were iso-C(15 : 0) (34.8 %), C(16 : 1)omega5c (15.0 %), anteiso-C(17 : 1) B/iso-C(17 : 1) I (14.4 %) and C(16 : 1)omega7c/iso-C(15 : 0) 2-OH (13.8 %). The DNA G+C content of strain WPCB131(T) was 65 mol%. The isolate could be readily distinguished from other Hymenobacter species using a combination of phenotypic characters. On the basis of the polyphasic evidence presented in this study, it is proposed that strain WPCB131(T) (=IMSNU 14116(T)=KCTC 12533(T)=NBRC 101118(T)) represents a novel species, Hymenobacter rigui sp. nov.</P>
Hahella ganghwensis sp. nov., isolated from tidal flat sediment
Baik, Keun Sik,Seong, Chi Nam,Kim, Eun Mi,Yi, Hana,Bae, Kyung Sook,Chun, Jongsik Microbiology Society 2005 International journal of systematic and evolutiona Vol.55 No.2
<P>A marine bacterial strain, designated FR1050<SUP>T</SUP>, was isolated from a sediment sample of getbol (Korean tidal flat). Phylogenetic investigations based on 16S rRNA gene sequence analysis showed that the isolate formed a robust monophyletic clade with <I>Hahella chejuensis</I> within the <I>γ</I>-<I>Proteobacteria</I>. Sequence similarity between strain FR1050<SUP>T</SUP> and the type strain of <I>Hahella chejuensis</I> was 94·7 %. Cells were Gram-negative, aerobic, rod-shaped, motile and halophilic; optimum growth occurred at sea salt concentrations of 4-6 %. The major fatty acids were C18 : 1<I>ω</I>9<I>c</I> (39·0 %) and C16 : 0 (18·1 %). The DNA G+C content was 44 mol%. The polyphasic data obtained showed that strain FR1050<SUP>T</SUP> is affiliated to the genus <I>Hahella</I> but represents a novel species for which the name <I>Hahella ganghwensis</I> sp. nov. is proposed. The type strain is FR1050<SUP>T</SUP> (=KCTC 12277<SUP>T</SUP>=JCM 12486<SUP>T</SUP>).</P>
Roseomonas riguiloci sp. nov., isolated from wetland freshwater
Baik, Keun Sik,Park, Seong Chan,Choe, Han Na,Kim, Se Na,Moon, Jae-Hak,Seong, Chi Nam Microbiology Society 2012 International journal of systematic and evolutiona Vol.62 No.12
<P>A non-motile, coccobacillus-shaped and pink pigmented bacterium, designated strain 03SU10-P<SUP>T</SUP>, was isolated from wetland freshwater (Woopo wetland, Republic of Korea). Cells were Gram reaction-negative and catalase- and oxidase-positive. The major fatty acids (>10 % of total) were C18 : 1ω7<I>c</I> and summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1ω7<I>c</I>). The predominant respiratory lipoquinone was Q-10. The DNA G+C content was 68 mol%. The major polar lipids were phosphatidylethanolamine, phosphatidylcholine and an unknown aminolipid. Spermidine, putrescine and 1,3-diaminopropane were the major polyamines. A phylogenetic tree based on 16S rRNA gene sequence comparisons showed that strain 03SU10-P<SUP>T</SUP> formed an evolutionary lineage within the radiation enclosing the members of the genus <I>Roseomonas</I>. The nearest neighbour to the novel strain was <I>Roseomonas stagni</I> HS-69<SUP>T</SUP> (96.3 % gene sequence similarity). The evidence provided by the polyphasic taxonomic approach used in this study indicated that strain 03SU10-P<SUP>T</SUP> could not be assigned to any recognized species; therefore a novel species is proposed, <I>Roseomonas riguiloci</I> sp. nov., with 03SU10-P<SUP>T</SUP> ( = KCTC 23339<SUP>T</SUP> = JCM 17520<SUP>T</SUP>) as the type strain.</P>
Glaciecola nitratireducens sp. nov., isolated from seawater.
Baik, Keun Sik,Park, Yoon-Dong,Seong, Chi Nam,Kim, Eun Mi,Bae, Kyung Sook,Chun, Jongsik Society for General Microbiology 2006 International journal of systematic and evolutiona Vol.56 No.9
<P>A marine bacterial strain, FR1064(T), was isolated from a surface seawater sample collected off Jeju Island, South Korea. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the isolate belonged to the Gammaproteobacteria and was related to the genus Glaciecola with 97.6 % sequence similarity to Glaciecola pallidula, its nearest phylogenetic neighbour. DNA-DNA relatedness between strain FR1064(T) and G. pallidula ACAM 615(T) was 55 %. Cells of the novel isolate were Gram-negative, aerobic, rod-shaped, motile and halophilic, with an optimum sea salts concentration of 4-7 %. The major fatty acids were straight-chain saturated (C(16 : 0)), summed feature 3 and monounsaturated fatty acid C(18 : 1). The DNA G+C content was 44 mol%. Several phenotypic characteristics differentiated the novel isolate from all previously described members of the genus Glaciecola. The polyphasic data obtained in this study clearly demonstrate that strain FR1064(T) represents a novel species of the genus Glaciecola. The name Glaciecola nitratireducens sp. nov. is therefore proposed, with strain FR1064(T) (=KCTC 12276(T)=JCM 12485(T)) as the type strain.</P>
Chryseoglobus frigidaquae gen. nov., sp. nov., a novel member of the family Microbacteriaceae
Baik, Keun Sik,Park, Seong Chan,Kim, Ho Jun,Lee, Kang Hyun,Seong, Chi Nam Microbiology Society 2010 International journal of systematic and evolutiona Vol.60 No.6
<P>A motile, rod-shaped, yellow-pigmented bacterium, designated strain CW1<SUP>T</SUP>, was isolated from a water-cooling system in the Republic of Korea. Cells were Gram-stain-positive, aerobic, catalase-positive and oxidase-negative. Strain CW1<SUP>T</SUP> formed slender rods with unusual bulbous protuberances. The major fatty acids were iso-C16 : 1 (33.7 %), anteiso-C15 : 0 (27.2 %), iso-C14 : 0 (13.3 %) and C16 : 0 (10.8 %). The cell-wall peptidoglycan was of type B2<I>β</I>, containing lysine as the diamino acid. The respiratory quinones were menaquinones with 12, 13 and 14 isoprene units. A phylogenetic tree based on 16S rRNA gene sequences showed that strain CW1<SUP>T</SUP> formed an evolutionary lineage within the radiation enclosing members of the family <I>Microbacteriaceae</I> and was related to, but distant from, members of the genera <I>Microcella</I> and <I>Yonghaparkia</I>. On the basis of the evidence presented, strain CW1<SUP>T</SUP> is considered to represent a novel species of a new genus in the family <I>Microbacteriaceae</I>, for which the name <I>Chryseoglobus frigidaquae</I> gen. nov., sp. nov. is proposed. The type strain of <I>Chryseoglobus frigidaquae</I> is CW1<SUP>T</SUP> (=KCTC 13142<SUP>T</SUP> =JCM 14730<SUP>T</SUP>).</P>
Baik, Keun Sik,Kim, Mi Sun,Lee, Ji Hee,Lee, Sang Suk,Im, Wan-Taek,Seong, Chi Nam International Union of Microbiological Societies 2014 International journal of systematic and evolutiona Vol.64 No.12
<P>A non-motile and rod-shaped bacterium, designated strain 02SUJ3<SUP>T</SUP>, was isolated from freshwater collected from the Juam Reservoir (Republic of Korea). Cells were Gram-stain-negative, aerobic, oxidase-negative and catalase-positive. The major fatty acids were iso-C<SUB>15 : 0</SUB>, iso-C<SUB>15 : 1</SUB> G and iso-C<SUB>17 : 0</SUB> 3-OH. The strain contained MK-7 as the major isoprenoid quinone. The main polar lipid was phosphatidylethanolamine. The DNA G+C content was 46.4 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain 02SUJ3<SUP>T</SUP> forms an independent lineage within the genus <I>Flavisolibacter</I> with low sequence similarity to <I>Flavisolibacter ginsengiterrae</I> Gsoil 492<SUP>T</SUP> and <I>Flavisolibacter ginsengisoli</I> Gsoil 643<SUP>T</SUP> (95.7 %). Phenotypic characteristics distinguished strain 02SUJ3<SUP>T</SUP> from members of the genus <I>Flavisolibacter</I>. On the basis of the evidence presented in this study, strain 02SUJ3<SUP>T</SUP> is considered to represent a novel species, for which the name <I>Flavisolibacter</I> <I>rigui</I> sp. nov. is proposed. The type strain is 02SUJ3<SUP>T</SUP> ( = JCM 17515<SUP>T</SUP> = KCTC 23328<SUP>T</SUP>). An emended description of the genus <I>Flavisolibacter</I> is also provided.</P>
Psychrobacter aestuarii sp. nov., isolated from a tidal flat sediment
Baik, Keun Sik,Park, Seong Chan,Lim, Chae Hong,Lee, Kang Hyun,Jeon, Doo Young,Kim, Choong Mo,Seong, Chi Nam Microbiology Society 2010 International journal of systematic and evolutiona Vol.60 No.7
<P>A Gram-negative-staining, non-motile, non-spore-forming and strictly aerobic bacterial strain, SC35<SUP>T</SUP>, was isolated from tidal flat sediment collected from the South Sea, Korea, and subjected to a taxonomic study using a polyphasic approach. The organism grew optimally at 20-30 °C and with 1-2 % (w/v) NaCl. Strain SC35<SUP>T</SUP> contained ubiquinone-8 as the predominant respiratory lipoquinone and C18 : 1<I>ω</I>9<I>c</I> as the major fatty acid. The DNA G<I>+</I>C content was 48.5 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain SC35<SUP>T</SUP> formed a lineage within the genus <I>Psychrobacter</I> (94.3-96.5 % sequence similarity), forming a distinct branch in a clade also containing <I>Psychrobacter pacificensis</I> NIBH P2K6<SUP>T</SUP> and <I>Psychrobacter celer</I> SW-238<SUP>T</SUP>. On the basis of phenotypic and phylogenetic data, strain SC35<SUP>T</SUP> (=KCTC 22503<SUP>T</SUP>=JCM 16343<SUP>T</SUP>) was placed in the genus <I>Psychrobacter</I> as the type strain of a novel species, for which the name <I>Psychrobacter aestuarii</I> sp. nov. is proposed.</P>
Zhihengliuella aestuarii sp. nov., isolated from tidal flat sediment.
Baik, Keun Sik,Lim, Chae Hong,Park, Seong Chan,Choe, Han Na,Kim, Ho Jun,Kim, DuWoon,Lee, Kang Hyun,Seong, Chi Nam Society for General Microbiology 2011 International journal of systematic and evolutiona Vol.61 No.7
<P>A Gram-stain-positive, ovoid to short rod-shaped, yellow-pigmented bacterium, designated strain DY66(T), was isolated from tidal-flat sediment collected from Deukryang Bay (Republic of Korea), and its taxonomic position was investigated by using a polyphasic approach. Strain DY66(T) grew optimally at 30 °C and pH 8-9 and in 2???% (w/v) NaCl. The peptidoglycan type was A4관, L-Lys-L-Ala-D-Glu, and tyvelose and glucose were the major cell-wall sugars. The predominant menaquinones were MK-10 and MK-9. Major cellular fatty acids (>10???% of total) were anteiso-C(15???:???0) and iso-C(15???:???0). The polar lipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylglycerol, an unknown aminophospholipid and three unknown aminolipids. The DNA G+C content was 59.1 mol%. This chemotaxonomic profile supported the assignment of strain DY66(T) to the genus Zhihengliuella. Phylogenetic analysis based on 16S rRNA gene sequences also indicated that strain DY66(T) belonged to the family Micrococcaceae and was related to the genus Zhihengliuella. On the basis of the evidence presented in this study, strain DY66(T) represents a novel species of the genus Zhihengliuella, for which the name Zhihengliuella aestuarii sp. nov. is proposed. The type strain is strain DY66(T) (???=???KCTC 19557(T) ???=???JCM 16364(T)).</P>