Thalassorhabdus alkalitolerans gen. nov., sp. nov., a novel Bacillaceae member isolated from marine sediment.

A novel Gram-stain-variable, rod-shaped, non-motile and non-endospore-forming bacterium (strain G27T) was isolated from near Dhuvaran, Gujarat, India. Based on 16S rRNA gene sequence analysis, strain G27T was identified as a member of the class Firmibacteria and was most closely related to Bacillus populi FJAT-45347T (94.9 % sequence similarity), Salipaludibacillus aurantiacus S9T (94.9 %), Salipaludibacillus neizhouensis KCTC 13187T (94.7 %), Alteribacillus iranensis DSM 23995T (94.6 %) and other Firmibacteria (<94.6 %). The DNA G+C content of strain G27T was 43.4±0.6 mol%. The cell-wall peptidoglycan contained meso-diaminopimelic acid. Polar lipids included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, one unidentified phospholipid and five unidentified lipids. The predominant isoprenoid quinone was menaquinone MK-7. Major fatty acids (>5 %) included anteiso-C15:0, iso-C15 : 0, anteiso-C17:0, C16 : 0 and iso-C16 : 0. The results of phylogenetic, chemotaxonomic and biochemical tests allowed the clear differentiation of strain G27T from all other members of the family Bacillaceae.It is therefore considered to represent a novel species of a new genus, for which the name Thalassorhabdus alkalitolerans gen. nov., sp. nov., is proposed. The type strain of Thalassorhabdus alkalitolerans is G27T (=MCC 3411T=CGMCC 1.15772T=KCTC 33941T).

Nesterenkonia cremea sp. nov., a bacterium isolated from a soda lake.

A Gram-stain-positive, aerobic, non-motile, rod-shaped, non-endospore-forming bacterial strain, 10CT, was isolated from Lonar soda lake in India. Based on the 16S rRNA gene sequence analysis, this strain was identified as belonging to the genus Nesterenkonia and was most closely related to the type strains of Nesterenkonia lacusekhoensis (99.1 %, sequence similarity), Nesterenkonia aethiopica (96.9 %), Nesterenkonia flava (96.9 %) and related of the genus Nesterenkonia (<96.6 %, sequence similarity). However, the DNA-DNA relatedness of strain 10CT with N. lacusekhoensis KCTC 19283T was only 34.6±0.9. The DNA G+C content of strain 10CT was 68.6 mol%. Strain 10CT was an aerobic microbe with optimal growth at 37 °C, pH 7.5-8.0 and 5-6 % (w/v) NaCl. The cell-wall peptidoglycan of strain 10CT was of the type A4α (l-Lys-l-Glu). The major polar lipids present were phosphatidylglycerol, diphosphatidylglycerol and phosphatidylcholine. The major isoprenoid quinones were MK-7, MK-8 and MK-9. Major fatty acids of strain 10CT were anteiso-C15 : 0, anteiso-C17 : 0 and iso-C16 : 0. The results of phylogenetic, chemotaxonomic and biochemical tests allowed a clear differentiation of strain 10CT, which represents a novel member of the genus Nesterenkonia for which the name Nesterenkonia cremea sp. nov. is proposed. The type strain is 10CT (=LMG 29100T=KCTC 39636T=CGMCC 1.15388T).

Bacillus catenulatus sp. nov., an alkalitolerant bacterium isolated from a soda lake.

Two novel (18CT and 6C) Gram-stain-positive, rod shaped, motile and endospore-forming bacterial strains were isolated from Lonar soda lake, India. Based on 16S rRNA gene sequence analysis, strains 18CT and 6C were identified as belonging to the class Firmibacteria, and were most closely related to Bacillus cohnii KCTC 3572T (99.3 and 99.9%, respectively), Bacillus zhanjiangensis KCTC 13713T (97.4 and 98.0%, respectively), Bacillus halmapalus LMG 17950T (97.0 and 97.6%, respectively) and other members in the genus Bacillus (<97.0%). However, the DNA-DNA relatedness between 18CT and 6C and B. cohnii KCTC 3572T (49.6 ± 0.9 and 51.6 ± 0.7, respectively), B. zhanjiangensis KCTC 13713T (42.9 ± 0.8 and 47.1 ± 0.3, respectively) and B. halmapalus LMG 17950T (39.9 ± 0.8 and 40.8 ± 0.3, respectively) indicated that the novel strains were distantly related to these strains. Further, the high 16S rRNA gene sequence similarity (100%) and DNA-DNA relatedness (90 ± 5%) suggested that strains 18CT and 6C were members of a genomospecies. The strains grew optimally at a pH of 7.5 with 2-3% (w/v) NaCl and temperature of 37 °C. Strains 18CT and 6C were catalase and oxidase negative. The cell wall of strain 18CT contained meso-diaminopimelic acid as the diagnostic diamino acid, which was in contrast with its nearest neighbour B. cohnii KCTC 3572T, which contained ornithine and aspartic acid. Polar lipids include diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), an unknown phospholipid (PL) and three unknown lipids (L1-3). The predominant isoprenoid quinone was MK-7. iso-C15:0 (32.5%) was the predominant fatty acid and significant proportions of anteiso-C15:0 (19.5%), C16:0 (11.5%), iso-C17:0 (9.5%) and anteiso-C17:0 (6.3%) were also detected. The DNA G + C content of strains 18CT and 6C were 39.3 and 39.2 mol%, respectively. The results of molecular, biochemical and chemotaxonomic tests showed a clear differentiation of strains 18CT and 6C from all other members of the genus Bacillus, for which the name Bacillus catenulatus sp. nov. is proposed. The type strain is 18CT (=KCTC 33781T = CGMCC 1.15475T).

Bacillus alcaliphilum sp. nov., a bacterium isolated from a soda lake.

Two novel (14BT and 7B) Gram-stain-positive, rod-shaped, motile and endospore-forming bacterial strains were isolated from Lonar soda lake, India. Based on 16S rRNA gene sequence analysis, the strains 14BT and 7B were identified as belonging to the class Firmibacteria and were most closely related to Bacillus halodurans LMG 7121T (99.7 and 99.8%, respectively), Bacillus okuhidensis LMG 22468T (99.1 and 99.2%, respectively) and other members in the genus Bacillus (<97.0%). However, the DNA-DNA relatedness studies indicated that the strains 14BT and 7B were distantly related to B. halodurans LMG 7121T (49.1 ± 0.6 and 45.7 ± 0.6, respectively) and B. okuhidensis LMG 22468T (40.9 ± 0.9 and 42.1 ± 0.5, respectively). The high 16S rRNA gene sequence similarity (99.9%) and DNA-DNA relatedness (88 ± 9) indicated that strains 14BT and 7B were members of a single species. The strains grew optimally at a pH of 9.0-9.5 with 2-5% (w/v) NaCl and temperature of 37 °C. Strains 14BT and 7B were catalase positive and oxydase negative. The cell wall of strain 14BT contained meso-diaminopimelic acid as the diagnostic diamino acid. Polar lipids include diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), an unknown aminophospholipid (APL1) and three unknown lipids (L1-3). The predominant isoprenoid quinone is MK-7. anteiso-C15:0 (30.8%) was the predominant fatty acid, and significant proportions of iso-C15:0 (24.9%), iso-C16:0 (17.9%) and anteiso-C17:0 (12.3%) were also detected in strains 14BT and 7B. The DNA G+C content of strains 14BT and 7B was 41.6 and 41.3 mol%, respectively. The results of molecular, physiological and biochemical tests allowed a clear differentiation of strains 14BT and 7B from all other members of the genus Bacillus, for which the name Bacillus alcaliphilum sp. nov. is proposed. The type strain is 14BT (=KCTC 33777T = CGMCC 1.15474T).

Tersicoccus solisilvae sp., nov., a bacterium isolated from forest soil.

A Gram-stain-positive, aerobic, non-motile, coccoid bacterial strain, 36AT, was isolated from Munnar, in India. Based on the results of 16S rRNA gene sequence analysis, this strain was identified as representing a member of the genus Tersicoccus and was most closely related to the type strain of Tersicoccus phoenicis (98.9 %, sequence similarity), the only other member of the genus, and to members of the related genus Arthrobacter (<96.1 %, sequence similarity). However, the DNA-DNA relatedness of strain 36AT with T. phoenicis DSM 30849T was only 31.9±0.8. The DNA G+C content of strain 36AT was 70.9 mol%. Strain 36AT was an aerobic microbe with optimal growth at 37 °C, pH 6.0-8.0 and NaCl 0.5-3 % (w/v). Cell-wall peptidoglycan of strain 36AT was of type A11.20 (Lys-Ser-Ala2). Polar lipids present were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol, two phospholipids, a glycolipid and four unknown lipids. The major isoprenoid quinones were MK-9 (H2) and MK-8 (H2). Major fatty acids of strain 36AT were anteiso-C15 : 0, anteiso-C17 : 0, iso-C16 : 0 and iso-C15 : 0. The results of phylogenetic, chemotaxonomic and biochemical tests allowed a clear differentiation of strain 36AT, which represents a novel member of the genus Tersicoccus, for which the name Tersicoccus solisilvae sp. nov., is proposed. The type strain is 36AT (=KCTC 33776T=CGMCC 1.15480T).

Pontibacillus salipaludis sp. nov., a slightly halophilic bacterium isolated from a salt pan.

Two novel Gram-stain-positive, facultatively anerobic, rod-shaped, motile, endospore-forming bacterial strains, 9DMT and 6DM, were isolated from Tuticorn, India. The high 16S rRNA gene sequence similarity (99.9 %) and DNA-DNA relatedness (88±2 %) indicated that strains 9DMT and 6DM were members of a single species. Based on 16S rRNA gene sequence analysis these strains were identified as belonging to the genus Pontibacillus and were related most closely to the type strains of Pontibacillus chungwhensis (99.7 % sequence similarity) and Pontibacillus marinus (97.9 %). The DNA G+C content of strains 9DMT and 6DM was 41.6 and 41.4 mol%, respectively. However, the level of DNA-DNA relatedness of these strains with P. chungwhensis KCTC 3890T and P. marinus KCTC 3917T was only 40.9 + 0.8 and 39.8 + 0.9 %, respectively. Strains 9DMT and 6DM were facultative anaerobes with optimal growth at 37 °C, at pH 7.0-8.0 and with 2-3 % (w/v) NaCl. The cell-wall peptidoglycan of strain 9DMT contained meso-diaminopimelic acid. Polar lipids included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, a phospholipid and three unknown lipids. The isoprenoid quinone was MK-7. Major fatty acids of strain 9DMT were anteiso-C15 : 0, iso-C15 : 0, iso-C16 : 0 and anteiso-C17 : 0. The results of phylogenetic, chemotaxonomic and biochemical tests allowed the clear differentiation of strains 9DMT and 6DM, which are considered to represent a novel member of the genus Pontibacillus, for which the name Pontibacillus salipaludis sp. nov. is proposed. The type strain is 9DMT (= KCTC 33742T=LMG 29102T= CGMCC 1.15353T).

Salipaludibacillus aurantiacus gen. nov., sp. nov. a novel alkali tolerant bacterium, reclassification of Bacillus agaradhaerens as Salipaludibacillus agaradhaerens comb. nov. and Bacillus neizhouensis as Salipaludibacillus neizhouensis comb. nov.

Two novel (S9T and S12) Gram-stain-positive, rod shaped, non-motile and endospore forming bacteria were isolated from Narayan Sarovar lake, in India. The high 16S rRNA gene sequence similarity (99.9 %) and DNA-DNA relatedness (86±2 %) indicated that strains S9T and S12 were members of a single species. Based on the 16S rRNA gene sequence analysis, these strains were identified as belonging to the class Firmibacteria and were most closely related to Bacillus agaradhaerens PN-105T (96.8 % sequence similarity), Bacillus neizhouensis JSM 071004T (96.5 %) and Bacillus luteus JC167T (96.1 %). However, these strains shared only 90.3 % 16S rRNA gene sequence similarity with Bacillus subtilis subsp. subtilis DSM 10T, indicating that they might not be members of the genus Bacillus. The cell-wall peptidoglycan contained meso-diaminopimelic acid. Polar lipids included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, one unknown phospholipid and an unknown lipid. The predominant isoprenoid quinone was MK-7. Major fatty acids (>5 %) included anteiso-C15 : 0, C16 : 0, iso-C15 : 0, anteiso-C17 : 0, iso-C16 : 0 and summed feature 3. The results of phylogenetic, chemotaxonomic and biochemical tests allowed a clear differentiation of strains S9T and S12 from all other members of the family Bacillaceae.The strains therefore represent a novel member of a new genus from the family Bacillaceae, for which the name Salipaludibacillus aurantiacus gen. nov., sp. nov. is proposed. The type strain is S9T (=KCTC 33633T=LMG 28644T). Based on the present study, it is also proposed to transfer Bacillus agaradhaerens and Bacillus neizhouensis to this new genus as Salipaludibacillus agaradhaerens comb. nov. and Salipaludibacillus neizhouensis comb. nov.

Production, purification and characterization of a thermotolerant alkaline serine protease from a novel species Bacillus caseinilyticus.

Alkaline proteases are important enzymes in many industrial applications, especially as additives in laundry detergent industry. Though there are a number of Bacillus species which are reported to be producing proteases, the efficiency of a protease produced by a novel strain has to be studied in comparison to the others. Hence, in this study, an alkaline serine protease produced by a novel species Bacillus caseinilyticus was purified and characterized for its possible usage in detergent industry. Ammonium sulphate, dialysis and DEAE column chromatographic methods were used for purification of the isolated alkaline protease. The molecular weight of the protease was determined by SDS-PAGE and it was found to be 66 kDa. Peptide mass fingerprinting (PMF) was carried out using MALDI-TOF-TOF mass spectrometry and the peptides were found to be similar to that of subtilisin protease. Specific activity of purified protein was found to be 89.2 U/mg. Optimum pH and temperature for enzyme activity were at pH 8 and 60 °C, respectively, showing stability with 10 mM CaCl2. Phenyl methyl sulphonyl fluoride (PMSF) at both 5 and 10 mM concentrations completely inhibited the enzyme activity suggesting its serine nature. EDTA, metal ions Mg2+ and Ca2+ increased the enzyme activity. The one factor at a time optimisation of the protease production was carried to identify the important factors that affect its production. After optimisation, the protease was produced at lab scale, purified and characterised. This alkali, thermotolerant serine protease was found to be significantly stable in the presence of various surfactants and H2O2. Also, it was successfully able to remove blood stain when used as an additive along with commercial detergent suggesting its potential application in the laundry detergent industry.

Pelagirhabdus alkalitolerans gen. nov., sp. nov., an alkali-tolerant and thermotolerant bacterium isolated from beach sediment, and reclassification of Amphibacillus fermentum as Pelagirhabdus fermentum comb. nov.

A novel bacterial strain, designated S5T, was isolated from Pingaleshwar beach, in India. Cells were Gram-stain-positive, rod-shaped, non-motile and non-endospore-forming. Based on 16S rRNA gene sequence analysis, the strain was identified as belonging to the class Firmibacteria and was related most closely to Amphibacillus fermentum DSM 13869T (97.6 % sequence similarity). However, it shared only 93.1 % 16S rRNA gene sequence similarity with Amphibacillus xylanus NBRC 15112T, the type species of the genus, indicating that strain S5T might not be a member of the genus Amphibacillus. The DNA-DNA relatedness between strain S5T and Amphibacillus fermentum DSM 13869T was 39 %. The cell-wall peptidoglycan contained meso-diaminopimelic acid. Polar lipids included diphosphatidylglycerol, phosphatidylglycerol and two phospholipids. Isoprenoid quinones were absent from strain S5T. Fatty acid analysis revealed that anteiso-C15 : 0, C16 : 0 and iso-C15 : 0 were the predominant fatty acids present. The results of phylogenetic, chemotaxonomic and biochemical tests allowed the clear differentiation of strain S5T, which is considered to represent a novel species of a new genus in the family Bacillaceae, for which the name Pelagirhabdus alkalitolerans gen. nov., sp. nov. is proposed. The type strain of Pelagirhabdus alkalitolerans is S5T ( = KCTC 33632T = CGMCC 1.15177T). Based on the present study, it is also suggested to transfer Amphibacillus fermentum to this new genus, as Pelagirhabdus fermentum comb. nov. The type strain of Pelagirhabdus fermentum is Z-7984T = (DSM 13869T = UNIQEM 210T).

Cellulosimicrobium aquatile sp. nov., isolated from Panagal reservoir, Nalgonda, India.

A Gram-stain positive, non-spore forming, non-motile, yellow-pigmented, rod shaped and coccoid aerobic strain designated 3bp(T) was isolated from Panagal reservoir, at Nalgonda, Telangana, India. Based on 16S rRNA gene sequence analysis it was identified that strain 3bp(T) belongs to the class Actinobacteria and is closely related to Cellulosimicrobium funkei VTT E-072700(T), Cellulosimicrobium cellulans LMG16221(T) and Cellulosimicrobium terreum KCTC 19206(T). The DNA-DNA relatedness data demonstrated that strain 3bp(T) is distinguishable from the above three species of the genus. Further, the chemotaxonomic properties of strain 3bp(T) were consistent with those of the genus Cellulosimicrobium: MK-9(H4) was the predominant menaquinone, anteiso-C15 : 0, iso-C15:0,  anteiso-C17 : 0 and iso- C16:0 were the predominant cellular fatty acids and the cell-wall peptidoglycan contains L-lysine. The DNA G+C content of strain 3bp(T) was 73.8 mol%. The results of the polyphasic analysis allowed a clear differentiation of strain 3bp(T) from all other members of the genus Cellulosimicrobium. Strain 3bp(T) is thus considered to represent a novel member of the genus Cellulosimicrobium, for which the name Cellulosimicrobium aquatile sp. nov. is proposed. The type strain is 3bp(T) (=KCTC 39527(T) = MCC 2761(T) = LMG 28646(T)).

Nocardioides solisilvae sp. nov., isolated from a forest soil.

A Gram-stain positive, rod shaped aerobic bacterial strain designated Ka25(T) was isolated from a forest soil sample near Kasol, Himachal Pradesh, India. Based on 16S rRNA gene sequence analysis it was identified that strain Ka25(T) belongs to the class Actinobacteria and is most closely related to Nocardioides daejeonensis KCTC 19772(T) (97.2 %), Nocardioides dubius JCM 13008(T) (96.9 %), Nocardioides psychrotolerans CGMCC 1.11156(T) (96.8 %), Nocardioides pacificus DSM 27278(T)(96.7 %) and Nocardioides daphniae JCM 16608(T)(96.4 %) sequence similarity respectively. The chemotaxonomic properties of strain Ka25(T) are consistent with those of the members of the genus Nocardioides: MK-8(H4) is the predominant menaquinone, iso-C16 : 0, iso-C17 : 0 and C18 : 1ω9c were identified as the predominant cellular fatty acids and the cell-wall peptidoglycan is based on LL-2,6-diaminopimelic acid. The DNA G+C content of strain Ka25(T) was determined to be 71.6 mol %. The results of the polyphasic taxonomic analysis allowed a clear differentiation of strain Ka25(T) from all other members of the genus Nocardioides. Strain Ka25(T) is thus considered to represent a novel member of the genus Nocardioides, for which the name Nocardioides solisilvae sp. nov. is proposed. The type strain is Ka25(T) (=KCTC39528(T) =MCC2762(T)).

Salisediminibacterium haloalkalitolerans sp. nov., isolated from Lonar soda lake, India, and a proposal for reclassification of Bacillus locisalis as Salisediminibacterium locisalis comb. nov., and the emended description of the genus Salisediminibacterium and of the species Salisediminibacterium halotolerans.

A Gram stain-positive, rod-shaped, non-motile, orange-pigmented and non-endospore-forming novel bacterial strain 10nlg(T) was isolated from Lonar soda lake in India. Based on the 16S rRNA gene sequence analysis, it was belonged to the genus Salisediminibacterium and was most closely related to Salisediminibacterium halotolerans CGMCC 1.7654(T) (99.9 %), Bacillus locisalis CGMCC 1.6286(T) (99.1 %) and other members in the Bacillaceae (<93.6 %). Further, DNA-DNA hybridization results demonstrated that strain 10nlg(T) was distantly (<70 %) related to S. halotolerans halo-2(T) (59.6 %) and B. locisalis CGMCC 1.6286(T) (53.2 %). Strain 10nlg(T) was catalase positive and oxidase negative. The cell wall of the strain 10nlg(T) contains meso-diaminopimelic acid as the diagnostic amino acid. Polar lipids include diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, five phospholipids and two unknown lipids. The predominant isoprenoid quinone was MK-7. Anteiso-C15:0 (32.6 %) was the predominant fatty acid, and significant proportions of iso-C15:0 (9.3 %), anteiso-C17:0 (8.3 %), C16:0 (4.3 %) were also detected in the strain 10nlg(T). The DNA G+C content of the strain 10nlg(T) was 45.6 mol %. The results of phylogenetic, physiological and biochemical tests allowed a distinct differentiation of strain 10nlg(T) not only from S. halotolerans halo-2(T), the only member of the genus Salisediminibacterium, but also from the related Bacillaceae members. Strain 10nlg(T) represents a novel species of the genus Salisediminibacterium for which the name Salisediminibacterium haloalkalitolerans sp. nov. is proposed. The type strain is 10nlg(T) (=KCTC 33414(T) = CGMCC 1.12818(T)). B. locisalis CGMCC 1.6286(T) also represents a member of the genus Salisediminibacterium for which the name Salisediminibacterium locisalis CG1(T) is proposed. The type strain is CG1(T) = (CCM 7370(T) = CECT 7152(T) = CGMCC 1.6286(T) = DSM 18085(T)). In accordance with the new polar lipid data collected in this study, emended descriptions of the genus Salisediminibacterium and the species S. halotolerans halo-2(T) are also provided.

Streptomyces alkalithermotolerans sp. nov., a novel alkaliphilic and thermotolerant actinomycete isolated from a soda lake.

An alkaliphilic actinomycete, strain AC3(T), was isolated from Lonar soda lake, in India. Based on 16S rRNA gene sequence analysis it was identified that the strain belongs to the class Actinobacteria and was most closely related to Streptomyces sodiiphilus JCM 13581(T) (96.4 % sequence similarity), Streptomyces leeuwenhoekii DSM 42122(T) (96.1 %), Streptomyces albus NRRL B-2365(T) (96.1 %), Streptomyces panacagri Gsoil 519(T) (96.0 %), Streptomyces fimbriatus NBRC 15411(T) (95.9 %) and other members of the genus Streptomyces (<95.9 %).The strain formed a well separated clade in the genus Streptomyces based on the 16S rRNA gene analysis of all of the validly named Streptomyces species. Strain AC3(T) was observed to produce light-cream substrate and white aerial mycelia on most tested media. The optimum pH for growth was determined to be 9.5-10.0 with no growth at pH 7.0. The DNA G+C content of strain AC3(T) was determined to be 71.2 mol %. The results of the polyphasic analysis allowed a clear differentiation of strain AC3(T) from all other members of the genus Streptomyces. Strain AC3(T) is thus considered to represent a novel member of the genus Streptomyces, for which the name Streptomyces alkalithermotolerans sp. nov. is proposed. The type strain is AC3(T) (=KCTC 29497(T) = JCM 30167(T)).

Cohaesibacter haloalkalitolerans sp. nov., isolated from a soda lake, and emended description of the genus Cohaesibacter.

Two novel Gram-stain-negative, motile, catalase-negative and oxidase-positive strains of bacteria (JC131(T) and JC112) were isolated from Lonar, a soda lake in India. Based on 16S rRNA gene sequence similarity studies, strains JC131(T) and JC112 belong to the family Cohaesibacteraceae of the class Alphaproteobacteria and were most closely related to Cohaesibacter marisflavi DQHS21(T) (98.0 %) and Cohaesibacter gelatinilyticus CL-GR15(T) (96.0 %). Polar lipids of strains JC131(T) and JC112 include phosphatidylglycerol, phosphatidylethnolamine, phosphatidylmonomethylethanolamine, diphosphatidylglycerol and two unidentified lipids (L1 and L2). Both strains have diplopterol, diploptene, an unidentified hopane (UH) and bacteriohopane derivatives (BHD1 and 2) as major hopanoids and an unidentified pigment (P1). The predominant isoprenoid quinone of both strains was ubiquinone-10 (Q10). Whole-cell fatty acid analysis of both strains revealed that C18 : 1ω7c was the predominant cellular fatty acid and significant proportions of C16 : 0, summed feature 3 (C16 : 1ω7c and/or iso-C15 : 0 2-OH), 11-methyl C18 : 1ω7c, C18 : 1ω9c, C18 : 0 and C20 : 1ω7c were also detected. The DNA G+C content of strains JC131(T) and JC112 was 54.6 and 53.8 mol%, respectively. The genome reassociation (based on DNA-DNA hybridization) of strains JC131(T) and JC112 with Cohaesibacter marisflavi NCCB 100300(T) ( = DQHS21(T)) was about 58 %, while between JC131(T) and JC112 it was about 87 %. On the basis of physiological, biochemical and chemotaxonomical properties, strains JC131(T) and JC112 are differentiated from the other two members of the genus Cohaesibacter. Strains JC131(T) and JC112 represent a novel species of the genus Cohaesibacter, for which the name Cohaesibacter haloalkalitolerans sp. nov. is proposed. The type strain is JC131(T) ( = KCTC 32038(T) = NBRC 109022(T)). An emended description of the genus Cohaesibacter is presented.