Kiseong Joh

Mucilaginibacter myungsuensis sp. nov., isolated from a mesotrophic artificial lake

A non-motile, pale-yellow bacterium, designated strain HMD1056(T), was isolated from an artificial lake located within the campus of Hankuk University of Foreign Studies, Yongin, Korea. The major fatty acids were summed feature 3 (iso-C(15 : 0) 2-OH and/or C(16 : 1)ω7c; 49.1 %) and iso-C(15 : 0) (22.4 %). The major respiratory quinone was MK-7. The DNA G+C content was 46.9 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain HMD1056(T) formed a lineage within the genus Mucilaginibacter and was closely related to the type strains of Mucilaginibacter ximonensis (95.4 % sequence similarity), Mucilaginibacter kameinonensis (94.5 %) and Mucilaginibacter paludis (93.4 %). On the basis of the evidence presented in this study, strain HMD1056(T) represents a novel species of the genus Mucilaginibacter, for which the name Mucilaginibacter myungsuensis sp. nov. is proposed. The type strain is HMD1056(T) ( = KCTC 22746(T)  = CECT 7550(T)).

Altererythrobacter troitsensis sp. nov., isolated from the sea urchin Strongylocentrotus intermedius

An aerobic, halotolerant, Gram-negative bacterium was isolated from the sea urchin Strongylocentrotus intermedius and subjected to taxonomic characterization. The strain, designated KMM 6042(T), was rod-shaped, motile and yellow-pigmented. Phylogenetic analysis indicated that the strain was most closely related to the type strain of Altererythrobacter dongtanensis, and the level of 16S rRNA gene sequence similarity between the two was 99.0 %. However, the DNA-DNA relatedness between the two strains was 34.4 ± 7.6 %. Physiological and chemotaxonomic properties clearly distinguished the novel strain from other species of the genus Altererythrobacter. It is thus evident from the phylogenetic and phenotypic analyses that strain KMM 6042(T) merits recognition as a novel species of the genus Altererythrobacter, for which the name Altererythrobacter troitsensis sp. nov. (type strain, KMM 6042(T) = KCTC 12303(T) = JCM 17037(T)) is proposed.

Pontibacter saemangeumensis sp. nov., isolated from seawater

A gram-negative, rod-shaped, non-motile and pink bacterial strain, designated strain GCM0142(T), was isolated from the confined seawater in the Saemangeum Tide Embankment of South Korea, and characterized using a polyphasic approach. 16S rRNA gene sequence analysis of strain GCM0142(T) indicated that the isolate belonged to the phylum Bacteroidetes and exhibited similarity levels of 94.0-96.4 % to the type strains of recognized Pontibacter species. Strain GCM0142(T) was oxidase- and catalase-positive. The major cellular fatty acids of the novel strain were summed feature 4 (comprising iso-C(17 : 1)I and/or anteiso-C(17 : 1)B, 36.8 %), iso-C(15 : 0) (22.3 %) and summed feature 3 (comprising C(16 : 1)ω7c and/or C(16 : 1)ω6c, 6.2 %). The DNA G+C content of strain GCM0142(T) was 48.9 mol% and the major quinone was MK-7. The polar lipid profile consisted of phosphatidylethanolamine, two unknown aminolipids (AL1-2), an unknown aminophospholipid, five unknown lipids (L1-5) and an unknown glycolipid. On the basis of the evidence presented, strain GCM0142(T) is considered to represent a novel species of the genus Pontibacter, for which the name Pontibacter saemangeumensis sp. nov. is proposed. The type strain is GCM0142(T) ( = KACC 16448(T) = JCM 17926(T)).

Flavobacterium jumunjinense sp. nov., isolated from a lagoon, and emended descriptions of Flavobacterium cheniae, Flavobacterium dongtanense and Flavobacterium gelidilacus.

A Gram-staining-negative, yellow-pigmented bacterial strain, motile by gliding, designated HME7102(T), was isolated from lagoon water in Korea. The phylogenetic tree based on 16S rRNA gene sequences showed that strain HME7102(T) formed a distinct lineage within the genus Flavobacterium. Strain HME7102(T) was closely related to Flavobacterium cheniae NJ-26(T) (94.5 %), Flavobacterium dongtanense LW30(T) (94.4 %) and Flavobacterium gelidilacus LMG 21477(T) (94.2 %). The major fatty acids of strain HME7102(T) were iso-C15 : 0, iso-C15 : 1 G, iso-C17 : 0 3-OH and iso-C15 : 0 3-OH. The major polyamine was homospermidine and the major polar lipids were phosphatidylethanolamine, one unidentified aminolipid and two unidentified polar lipids. The DNA G+C content of strain HME7102(T) was 36.5 mol%. On the basis of the evidence presented in this study, strain HME7102(T) represents a novel species of the genus Flavobacterium, for which the name Flavobacterium jumunjinense sp. nov. is proposed. The type strain is HME7102(T) ( = KCTC 23618(T) = CECT 7955(T)). Emended descriptions of F. cheniae, F. dongtanense and F. gelidilacus are also proposed.

Mucilaginibacter soyangensis sp. nov., isolated from a lake

A non-motile, yellow-orange-pigmented bacterial strain, designated HME6664(T), was isolated from Lake Soyang, Republic of Korea. The major fatty acids of strain HME6664(T) were summed feature 3 (comprising C16 : 1ω6c and/or C(16 : 1)ω7c; 44.7%) and iso-C15 : 0 (20.2%). The DNA G+C content was 40.8 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain HME6664(T) formed a lineage within the genus Mucilaginibacter. Strain HME6664(T) was closely related to Mucilaginibacter ximonensis (96.7%), Mucilaginibacter dorajii (96.5%) and Mucilaginibacter lappiensis (96.3%). On the basis of the evidence presented in this study, strain HME6664(T) represents a novel species of the genus Mucilaginibacter, for which the name Mucilaginibacter soyangensis sp. nov., is proposed. The type strain is HME6664(T) ( = KCTC 23261(T) = CECT 7824(T)).

Sediminibacterium goheungense sp. nov., isolated from a freshwater reservoir.

A novel bacterial strain designated HME7863(T) was isolated from a freshwater reservoir in Goheung, Republic of Korea. Cells of strain HME7863(T) were Gram-staining-negative, strictly aerobic, orange-pigmented, rod-shaped and motile by gliding. Phylogenetic analysis based on 16S rRNA gene sequence showed that strain HME7863(T) formed a lineage within the genus Sediminibacterium. Strain HME7863(T) was closely related to Sediminibacterium ginsengisoli DCY13(T) (96.9 % sequence similarity) and Sediminibacterium salmoneum NJ-44(T) (96.4 %). The major cellular fatty acids were iso-C15 : 1 G, iso-C15 : 0, iso-C17 : 0 3-OH and iso-C16 : 0 3-OH. Polar lipid analysis revealed the presence of phosphatidylethanolamine, five unidentified aminolipids, two unidentified aminophospholipids, one unidentified phospholipid and two unidentified polar lipids. The only respiratory quinone was MK-7. The DNA G+C content was 40.5 mol%. On the basis of the evidence presented in this study, strain HME7863(T) represents a novel species of the genus Sediminibacterium, for which the name Sediminibacterium goheungense sp. nov., is proposed. The type strain is HME7863(T) ( = KCTC 23945(T) = CECT 8100(T)).

Gramella gaetbulicola sp. nov., a member of the family Flavobacteriaceae isolated from foreshore soil

A Gram-reaction-negative, yellow-pigmented, gliding, rod-shaped, aerobic bacterium (RA5-111(T)) was isolated from foreshore soil. The taxonomic status of the novel isolate was determined using a polyphasic approach. On the basis of 16S rRNA gene sequence similarities, strain RA5-111(T) could be assigned to the genus Gramella, with sequence similarities of 97.7, 97.3 and 96.2 % to the type strains of Gramella echinicola, Gramella portivictoriae and Gramella marina, respectively. Chemotaxonomic and phenotypic characteristics also supported the affiliation of strain RA5-111(T) with the genus Gramella. The genomic DNA G+C content was 39.1 mol%. The isolate contained MK-6 as the predominant menaquinone, iso-C(15 : 0), iso-C(17 : 0) 3-OH and a summed feature (iso-C(15 : 0) 2-OH and/or C(16 : 1)ω7c) as major fatty acids, and phosphatidylethanolamine and unknown phospholipids as the polar lipids. DNA-DNA relatedness, phenotypic, genotypic and chemotaxonomic data clearly indicate that the isolate represents a novel species of the genus Gramella, for which the name Gramella gaetbulicola sp. nov. is proposed. The type strain is RA5-111(T) ( = KCTC 23022(T) = JCM 16528(T) = NBRC 106272(T)).

Hymenobacter yonginensis sp. nov., isolated from a mesotrophic artificial lake

A non-motile, red-pigmented bacterium, designated strain HMD1010(T), was isolated from an artificial lake located within the campus of Hankuk University of Foreign Studies, Yongin, Korea. A phylogenetic tree based on 16S rRNA gene sequences showed that strain HMD1010(T) formed a lineage within the genus Hymenobacter and was closely related to the type strains of Hymenobacter rigui (96.7 % sequence similarity) and H. gelipurpurascens (95.6 %). The major fatty acids were C(16 : 1)ω5c (21.9 %), summed feature 3 (iso-C(15 : 0) 2-OH and/or C(16 : 1)ω7c; 17.2 %), iso-C(15 : 0) (14.5 %) and summed feature 4 (anteiso-C(17 : 1) B and/or iso-C(17 : 1) I; 11.9 %). The DNA G+C content was 60.4 mol%. On the basis of the evidence presented in this study, strain HMD1010(T) represents a novel species of the genus Hymenobacter, for which the name Hymenobacter yonginensis sp. nov. was proposed. The type strain is HMD1010(T) ( = KCTC 22745(T)  = CECT 7546(T)).

Algoriphagus taeanensis sp. nov., isolated from a tidal flat, and emended description of Algoriphagus hitonicola.

A Gram-staining-negative, aerobic and rod-shaped bacterial strain, designated HMC4223(T), was isolated from a tidal flat in Taean, Republic of Korea. A phylogenetic tree based on 16S rRNA gene sequences showed that strain HMC4223(T) formed a lineage within the genus Algoriphagus and exhibited highest sequence similarity to Algoriphagus hitonicola 7-UAH(T) (96.3 %). The major fatty acids of strain HMC4223(T) were iso-C15 : 0 and summed feature 3 (comprising C16 : 1ω6c and/or C16 : 1ω7c). The major respiratory quinone was MK-7. The major polar lipids were phosphatidylethanolamine and five unidentified polar lipids. The DNA G+C content of strain HMC4223(T) was 48.4 mol%. On the basis of the evidence presented in this study, strain HMC4223(T) represents a novel species of the genus Algoriphagus, for which the name Algoriphagus taeanensis sp. nov. is proposed, with the type strain HMC4223(T) ( = KCTC 22709(T) = NBRC 105728(T)). An emended description of Algoriphagus hitonicola is also presented.

Chitinimonas viridis sp. nov., isolated from a mesotrophic artificial lake.

A Gram-staining-negative, rod-shaped bacterium, strain HMD2169(T), was isolated from a mesotrophic artificial lake in Korea. Strain HMD2169(T) grew in the presence of 0-3.0% (w/v) NaCl, at pH 5-10 and at 20-37 °C. The predominant quinone of strain HMD2169(T) was ubiquinone (UQ)-8. The major fatty acids were summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c), C16 : 0 and summed feature 8 (comprising C18 : 1ω7c and/or C18 : 1ω6c). The major polar lipids were phosphatidylethanolamine, diphosphatidylglycerol, two unidentified aminolipids and two unidentified lipids. The DNA G+C content was 59.8 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain HMD2169(T) was a representative of a lineage within the genus Chitinimonas. Strain HMD2169(T) was closely related to Chitinimonas taiwanensis (95.8 % sequence similarity) and Chitinimonas koreensis (94.6 %). On the basis of the evidence presented in this study, strain HMD2169(T) is a representative of a novel species of the genus Chitinimonas, for which the name Chitinimonas viridis sp. nov. is proposed with the type strain HMD2169(T) ( = KCTC 22839(T) = CECT 7703(T)).