Fontibacter ferrireducens sp. nov., an Fe(III)-reducing bacterium isolated from a microbial fuel cell

2013 ◽  
Vol 63 (Pt_3) ◽  
pp. 925-929 ◽  
Author(s):  
Jun Zhang ◽  
GuiQin Yang ◽  
Shungui Zhou ◽  
Yueqiang Wang ◽  
Yong Yuan ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Type Species ◽  
Iron Reduction ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Distinct Species ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A novel, dissimilatory Fe(III)-reducing bacterium, designated strain SgZ-2T, which could couple glucose oxidation to iron reduction for energy conservation, was isolated from a microbial fuel cell. The isolate was Gram-staining-negative, catalase-positive, oxidase-negative and facultatively anaerobic. The strain was able to grow on tryptic soy agar at 15–37 °C and in the presence of 0–5 % (w/v) NaCl. The predominant cellular fatty acids (>5 %) were iso-C15 : 0, iso-C17 : 0 3-OH and iso-C17 : 1ω9c; the major respiratory quinone was MK-7; the major polar lipids were phosphatidylethanolamine, an unidentified aminolipid and three other unidentified lipids; and the DNA G+C content was 55.3 mol%. Phylogenetic analyses based on 16S rRNA sequences showed that the novel strain was most closely related to Fontibacter flavus CC-GZM-130T (99.9 % sequence similarity), and was a member of the family Cyclobacteriaceae . The levels of DNA–DNA relatedness observed between strain SgZ-2T and F. flavus CCM 7650T (<41 %) indicated that the two strains represented two distinct species. Based on phylogenetic analyses and phenotypic characteristics, strain SgZ-2T represents a novel species of the genus Fontibacter , for which the name Fontibacter ferrireducens sp. nov. is proposed. The type strain is SgZ-2T ( = CCTCC M 2011498T  = KACC 16525T).

Azospirillum humicireducens sp. nov., a nitrogen-fixing bacterium isolated from a microbial fuel cell

2013 ◽  
Vol 63 (Pt_7) ◽  
pp. 2618-2624 ◽  
Author(s):  
Shungui Zhou ◽  
Luchao Han ◽  
Yueqiang Wang ◽  
Guiqin Yang ◽  
Li Zhuang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Nitrogen Fixing ◽  
Content Type ◽  
Link Type ◽  
Type Strains

A Gram-negative, facultative anaerobic, motile, spiral, straight-to-slightly curved rod-shaped and nitrogen-fixing strain, designated SgZ-5T, was isolated from a microbial fuel cell (MFC) and was characterized by means of a polyphasic approach. Growth occurred with 0–1 % (w/v) NaCl (optimum 1 %) and at pH 5.5–8.5 (optimum pH 7.2) and at 25–37 °C (optimum 30 °C) in nutrient broth (NB). The strain had the ability to grow under anaerobic conditions via the oxidation of various organic compounds coupled to the reduction of anthraquione-2,6-disulfonate (AQDS). Chemotaxonomic characteristics (main ubiquinone Q-10, major fatty acid C18 : 1ω7c/C18 : 1ω6c and DNA G+C content 67.7 mol%) were similar to those of members of the genus Azospirillum . According to the results of phylogenetic analyses, strain SgZ-5T belonged to the genus Azospirillum within the family Rhodospirillaceae of the class Alphaproteobacteria , and was related most closely to the type strains of Azospirillum lipoferum , Azospirillum thiophilum and Azospirillum oryzae (98.0, 97.6 and 97.1 % 16S rRNA gene sequence similarity, respectively). DNA–DNA pairing studies showed that the unidentified organism displayed reassociation values of 36.7±3.7, 24.1±2.2 and 22.3±2.4 % to the type strains of A. lipoferum , A. thiophilum and A. oryzae , respectively. Similarities between nifH gene sequences of strain SgZ-5T and members of the genus Azospirillum ranged from 94.0 to 97.0 %. A combination of phenotypic, chemotaxonomic, phylogenetic and genotypic data clearly indicated that strain SgZ-5T represents a novel species, for which the name Azospirillum humicireducens sp. nov. is proposed. The type strain is SgZ-5T ( = CCTCC AB 2012021T = KACC 16605T).

scholarly journals Ureibacillus defluvii sp. nov., isolated from a thermophilic microbial fuel cell

2014 ◽  
Vol 64 (Pt_5) ◽  
pp. 1617-1621 ◽  
Author(s):  
Shungui Zhou ◽  
Jia Tang ◽  
Dongxing Qin ◽  
Qin Lu ◽  
Guiqin Yang
Keyword(s):  
Fuel Cell ◽  
16S Rrna ◽  
Microbial Fuel Cell ◽  
Type Species ◽  
Novel Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type

A thermophilic bacterium, designated DX-1T, was isolated from the anode biofilm of a microbial fuel cell (MFC). Cells of strain DX-1T were oxidase-positive, catalase-positive and Gram-staining-negative. The strain was found to be rod-shaped and non-motile and to produce subterminal spores. The strain was able to grow with NaCl at concentrations ranging from 0 to 6 %, at temperatures of 25–60 °C (optimum 55 °C) and pH 6.0–8.0 (optimum pH 7.0). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain DX-1T formed a cluster with Ureibacillus thermosphaericus DSM 10633T (96.9 % 16S rRNA sequence similarity), Ureibacillus composti DSM 17951T (95.8 %), Ureibacillus thermophilus DSM 17952T (95.7 %) and Ureibacillus terrenus DSM 12654T (95.3 %). The G+C content of the genomic DNA was 40.4 mol%. The major quinone was MK-7, the peptidoglycan type was l-Lys←d-Asp, and the major cellular fatty acids (>5 %) were iso-C16 : 0 and iso-C14 : 0. The polar lipids consisted of phosphatidylglycerol, diphosphatidylglycerol and phospholipids of unknown composition. Based on phenotypic characteristics, chemotaxonomic features and results of phylogenetic analyses, the strain was determined to represent a distinct novel species of the genus Ureibacillus , and the name proposed for the novel species is Ureibacillus defluvii sp. nov., with type strain DX-1T ( = CGMCC 1.12358T = KCTC 33127T).

Thauera humireducens sp. nov., a humus-reducing bacterium isolated from a microbial fuel cell

2013 ◽  
Vol 63 (Pt_3) ◽  
pp. 873-878 ◽  
Author(s):  
Gui-Qin Yang ◽  
Jun Zhang ◽  
Soon-Wo Kwon ◽  
Shun-Gui Zhou ◽  
Lu-Chao Han ◽  
...  
Keyword(s):  
Fuel Cell ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Microbial Fuel Cell ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Biochemical Tests ◽  
Content Type ◽  
Link Type

A Gram-negative, rod-shaped, non-spore-forming bacterium, designated SgZ-1T, was isolated from the anode biofilm of a microbial fuel cell. The strain had the ability to grow under anaerobic condition via the oxidation of various organic compounds coupled to the reduction of anthraquione-2,6-disulfonate (AQDS) to anthrahydroquinone-2,6-disulfonate (AHQDS). Growth occurred in TSB in the presence of 0–5.5 % (w/v) NaCl (optimum 0–1 %), at 10–45 °C (optimum 25–37 °C) and at pH 6.0–10.0 (optimum 8.0–8.5). Based on 16S rRNA gene sequence similarity, strain SgZ-1T belonged to the genus Thauera . The highest level of 16S rRNA gene sequences similarity (96.7 %) was found to be with Thauera aminoaromatica S2 T and Thauera selenatis AXT, and lower values were obtained when compared with other recognized Thauera species. Chemotaxonomic analysis revealed that strain SgZ-1T contained Q-8 as the predominant quinone, and putrescine and 2-hydroxyputrescine as the major polyamines. The major cellular fatty acids (>5 %) were C16 : 1ω6c and/or C16 : 1ω7c (44.6 %), C16 : 0 (18.8 %), and C18 : 1ω6c and/or C18 : 1ω7c (12.7 %). Based on its phenotypic and phylogenetic properties, chemotaxonomic analysis and the results of physiological and biochemical tests, strain SgZ-1T ( = KACC 16524T = CCTCC M 2011497T) was designated the type strain of a novel species of the genus Thauera , for which the name Thauera humireducens sp. nov. was proposed.

scholarly journals Rufibacter latericius sp. nov., isolated from Baiyang Lake

2020 ◽  
Vol 70 (11) ◽  
pp. 5943-5949 ◽  
Author(s):  
Yun-zhen Yang ◽  
Ji-feng Chen ◽  
Wan-ru Huang ◽  
Ran-ran Zhang ◽  
Shuangjiang Liu ◽  
...  
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Draft Genome ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Pr China

A novel Gram-stain-negative, strictly aerobic, rod-shaped, brick red-pigmented bacterium, designated R-22-1 c-1T, was isolated from water from Baiyang Lake, Hebei Province, PR China. The strain was able to grow at 20–30 °C (optimum, 30 °C) and pH 6–7 (optimum, pH 6) in Reasoner’s 2A medium. 16S rRNA gene sequence and phylogenetic analyses of R-22-1 c-1T revealed closest relationships to Rufibacter immobilis MCC P1T (97.8 %), Rufibacter sediminis H-1T (97.9 %) and Rufibacter glacialis MDT1-10-3T (97.0 %), with other species of the genus Rufibacter showing less than 97.0 % sequence similarity. The predominant polar lipids were phosphatidylethanolamine, two unidentified aminophospholipids and three unidentified lipids. The major cellular fatty acids were iso-C15 : 0, C15 : 1  ω6c, C17 : 1  ω6c, anteiso-C15 : 0, summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1  ω7c and/or C16 : 1  ω6c) and summed feature 4 (iso-C17 : 1I and/or anteiso-C17 : 1B). The respiratory quinone was MK-7. The draft genome of R-22-1 c-1T was 5.6 Mbp in size, with a G+C content of 50.2 mol%. The average nucleotide identity and digital DNA–DNA hybridization relatedness values between strain R-22-1 c-1T and related type strains were R. immobilis MCC P1T (77.2 and 21.8 %), R. sediminis H-1T (81.6 and 21.4 %) and R. tibetensis 1351T (78.5 and 22.9 %). Based on these phylogenetic, chemotaxonomic and genotypic results, strain R-22-1 c-1T represents a novel species in the genus Rufibacter , for which the name Rufibacter latericius sp. nov. is proposed. The type strain is R-22-1 c-1T (=CGMCC 1.13570T=KCTC 62781T).

Croceimicrobium hydrocarbonivorans gen. nov., sp. nov., a novel marine bacterium isolated from a bacterial consortium that degrades polyethylene terephthalate

2021 ◽  
Vol 71 (4) ◽  
Author(s):  
Renju Liu ◽  
Qiliang Lai ◽  
Li Gu ◽  
Peisheng Yan ◽  
Zongze Shao
Keyword(s):  
Polyethylene Terephthalate ◽  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Phenotypic Data ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
The Family

A novel Gram-stain-negative, aerobic, gliding, rod-shaped and carotenoid-pigmented bacterium, designated A20-9T, was isolated from a microbial consortium of polyethylene terephthalate enriched from a deep-sea sediment sample from the Western Pacific. Growth was observed at salinities of 1–8 %, at pH 6.5–8 and at temperatures of 10–40 °C. The results of phylogenetic analyses based on the genome indicated that A20-9T formed a monophyletic branch affiliated to the family Schleiferiaceae , and the 16S rRNA gene sequences exhibited the maximum sequence similarity of 93.8 % with Owenweeksia hongkongensis DSM 17368T, followed by similarities of 90.4, 90.1 and 88.8 % with Phaeocystidibacter luteus MCCC 1F01079T, Vicingus serpentipes DSM 103558T and Salibacter halophilus MCCC 1K02288T, respectively. Its complete genome size was 4 035 598 bp, the genomic DNA G+C content was 43.2 mol%. Whole genome comparisons indicated that A20-9T and O. hongkongensis DSM 17368T shared 67.8 % average nucleotide identity, 62.7 % average amino acid identity value, 46.6% of conserved proteins and 17.8 % digital DNA–DNA hybridization identity. A20-9T contained MK-7 as the major respiratory quinone. Its major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phospatidylcholine; and the major fatty acids were iso-C15 : 0 (37.5 %), iso-C16 : 0 3-OH (12.4 %), and summed feature 3 (C16 : 1ω7c /C16 : 1ω6c, 11.6 %). Combining the genotypic and phenotypic data, A20-9T could be distinguished from the members of other genera within the family Schleiferiaceae and represents a novel genus, for which the name Croceimicrobium hydrocarbonivorans gen. nov., sp. nov. is proposed. The type strain is A20-9T (=MCCC 1A17358T =KCTC 72878T).

Luteimonas deserti sp. nov., a novel strain isolated from desert soil

2021 ◽  
Vol 71 (10) ◽  
Author(s):  
Xiao-Xian Huang ◽  
Jia Shang ◽  
Lian Xu ◽  
Rui Yang ◽  
Ji-Quan Sun
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Desert Soil ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A Gram-stain-negative, non-motile, rod-shaped bacterial strain, named SJ-16T, was isolated from desert soil collected in Inner Mongolia, northern PR China. Strain SJ-16T grew at pH 6.0–11.0 (optimum, pH 8.0–9.0), 4–40 °C (optimum, 30–35 °C) and in the presence of 0–8 % (w/v) NaCl (optimum, 0–2 %). The strain was negative for catalase and positive for oxidase. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain SJ-16T clustered with Luteimonas chenhongjianii 100111T and Luteimonas terrae THG-MD21T, and had 98.8, 98.6, 98.3 and <97.9 % of 16S rRNA gene sequence similarity to strains L. chenhongjianii 100111T, L. terrae THG-MD21T, L. aestuarii B9T and all other type strains of the genus Luteimonas , respectively. The major cellular fatty acids were iso-C15 : 0, iso-C16 : 0, summed feature 3 (C16 : 1  ω7c and/or C16 : 1  ω6c) and summed feature 9 (C16 : 0 10-methyl and/or iso-C17 : 1  ω9c). Diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine were the major polar lipids, and ubiquinone-8 was the only respiratory quinone. The genomic DNA G+C content was 69.3 mol%. The digital DNA–DNA hybridization and average nucleotide identity values of strain SJ-16T to L. chenhongjianii 100111T, L. terrae THG-MD21T, L. rhizosphaerae 4-12T and L. aestuarii B9T were 36.9, 37.5, 24.0 and 21.1 %, and 80.9, 80.6, 80.7 and 76.3 %, respectively. Based on phenotypic, physiological and phylogenetic results, strain SJ-16T represents a novel species of the genus Luteimonas , for which the name Luteimonas deserti is proposed. The type strain is SJ-16T (=CGMCC 1.17694T=KCTC 82207T).

Actinomyces haliotis sp. nov., a bacterium isolated from the gut of an abalone, Haliotis discus hannai

2014 ◽  
Vol 64 (Pt_2) ◽  
pp. 456-461 ◽  
Author(s):  
Dong-Wook Hyun ◽  
Na-Ri Shin ◽  
Min-Soo Kim ◽  
Pil Soo Kim ◽  
Joon Yong Kim ◽  
...  
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Northern Coast ◽  
Haliotis Discus Hannai ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Haliotis Discus

A novel, Gram-staining-positive, facultatively anaerobic, non-motile and coccus-shaped bacterium, strain WL80T, was isolated from the gut of an abalone, Haliotis discus hannai, collected from the northern coast of Jeju in Korea. Optimal growth occurred at 30 °C, pH 7–8 and with 1 % (w/v) NaCl. Phylogenetic analyses based on the 16S rRNA gene sequence revealed that strain WL80T fell within the cluster of the genus Actinomyces , with highest sequence similarity to the type strains of Actinomyces radicidentis (98.8 % similarity) and Actinomyces urogenitalis (97.0 % similarity). The major cellular fatty acids were C18 : 1ω9c and C16 : 0. Menaquinone-10 (H4) was the major respiratory quinone. The genomic DNA G+C content of the isolate was 70.4 mol%. DNA–DNA hybridization values with closely related strains indicated less than 7.6 % genomic relatedness. The results of physiological, biochemical, chemotaxonomic and genotypic analyses indicated that strain WL80T represents a novel species of the genus Actinomyces , for which the name Actinomyces haliotis sp. nov. is proposed. The type strain is WL80T ( = KACC 17211T = JCM 18848T).

Dokdonella immobilis sp. nov., isolated from a batch reactor for the treatment of triphenylmethane dye effluent

2013 ◽  
Vol 63 (Pt_4) ◽  
pp. 1557-1561 ◽  
Author(s):  
Ying Liu ◽  
Jing-Hua Jin ◽  
Hong-Can Liu ◽  
Zhi-Pei Liu
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Batch Reactor ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Triphenylmethane Dye ◽  
Content Type ◽  
Link Type ◽  
Gram Staining

A Gram-staining-negative, non-endospore-forming, non-flagellated, non-motile and rod-shaped bacterium, designated strain LM2-5T, was isolated from activated sludge in a sequencing batch reactor used for the treatment of triphenylmethane dye effluent. The taxonomy of strain LM2-5T was studied by phenotypic, chemotaxonomic and phylogenetic methods. Strain LM2-5T was aerobic, heterotrophic and positive for oxidase but negative for catalase activity. It grew at 16–37 °C (optimum 25 °C) and at pH 5.0–8.5 (optimum between pH 6.5 and pH 7.0). NaCl was not obligatory for growth but was tolerated at concentrations up to 2.0 % (w/v) NaCl. The novel strain formed yellow colonies on trypticase soy agar. Cells of strain LM2-5T were rods that measured 0.3–0.5 µm in width and 3.0–5.0 µm in length. The predominant respiratory quinone was Q-8. The major fatty acids were iso-C15 : 0 and iso-C17 : 1ω9c. The genomic DNA G+C content was 66.7 mol%. In phylogenetic analyses based on 16S rRNA gene sequences, strain LM2-5T clustered with members of the genus Dokdonella and appeared most closely related to Dokdonella koreensis DS-123T (96.4 % sequence similarity), Dokdonella fugitiva A3T (96.1 %), Dokdonella soli KIS28-6T (95.7 %) and Dokdonella ginsengisoli Gsoil 191T (95.7 %). On the basis of the phenotypic, chemotaxonomic and phylogenetic data, strain LM2-5T was considered to represent a novel species of the genus Dokdonella , for which the name Dokdonella immobilis is proposed. The type strain is LM2-5T ( = CGMCC 1.7659T  = JCM 15763T).

Pseudooceanicola endophyticus sp. nov., a novel endophytic bacterium isolated from bark Aegiceras corniculatum

2021 ◽  
Vol 71 (10) ◽  
Author(s):  
Zhou-Qing Zheng ◽  
Ming-Sheng Chen ◽  
Xiao-Rui Yan ◽  
Li Tuo
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Phenotypic Data ◽  
Unidentified Phospholipid ◽  
Respiratory Quinone ◽  
Aegiceras Corniculatum ◽  
Content Type ◽  
Link Type

A Gram-stain-negative, aerobic, short-rod-shaped bacterium, designated strain CBS1P-1T, was isolated from a surface-sterilized bark of Aegiceras corniculatum. Growth of strain CBS1P-1T was observed with between 0 and 12.0 % (w/v) NaCl (optimally with 5.0 %) and at between pH 6.0–9.0. It grew at temperatures between 25–37 °C (optimum, 30 °C). Chemotaxonomic analysis showed that ubiquinone-10 was the respiratory quinone. The lipids comprised diphosphatidylglycerol, phosphatidylglycerol, an unidentified glycolipid, an unidentified phospholipid and an unidentified aminolipid. The major fatty acids of strain CBS1P-1T were C18 : 1  ω7c, C16 : 0 and C19 : 0 cyclo ω8c. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain CBS1P-1T was most related to Pseudooceanicola antarcticus CGMCC 1.12662T with a sequence similarity of 96.5 %. The average nucleotide identity and digital DNA–DNA hybridization values between strain CBS1P-1T and P. antarcticus 1.12662T were 77.5 and 21.1 %, respectively. The G+C content of the genomic DNA was 67.3 mol%. Based on phylogenetic, chemotaxonomic and phenotypic data, strain CBS1P-1T is considered to represent a novel species of the genus Pseudooceanicola , for which the name Pseudooceanicola endophyticus is proposed. The type strain is CBS1P-1T (=KCTC 62836T=CGMCC 1.13743T).

Roseivivax isoporae sp. nov., isolated from a reef-building coral, and emended description of the genus Roseivivax

2012 ◽  
Vol 62 (Pt_6) ◽  
pp. 1259-1264 ◽  
Author(s):  
Ming-Hui Chen ◽  
Shih-Yi Sheu ◽  
Chaolun Allen Chen ◽  
Jih-Terng Wang ◽  
Wen-Ming Chen
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
The Novel ◽  
Biochemical Tests ◽  
Respiratory Quinone ◽  
Polar Lipid Profile ◽  
Content Type ◽  
Link Type

A bacterial strain, isolated from a sample of reef-building coral (Isopora palifera) collected off the coast of southern Taiwan, was characterized using a polyphasic taxonomic approach. The strain, designated sw-2T, was Gram-staining-negative, aerobic, rod-shaped and motile, with subpolar flagella, and formed greyish pink colonies. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain sw-2T was most closely related to Roseivivax halodurans Och 239T (97.4 % sequence similarity) and Roseivivax halotolerans Och 210T (96.4 %). The novel strain did not require NaCl for growth and exhibited optimal growth at 35–40 °C, at pH 7.5–8.0 and with 3–7 % (w/v) NaCl. It produced bacteriochlorophyll a under aerobic conditions. Summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c; 63.7 %) predominated in the cellular fatty acid profile. The novel strain’s major respiratory quinone was ubiquinone Q-10 and its genomic DNA G+C content was 68.8 mol%. The polar lipid profile consisted of a mixture of phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, diphosphatidylglycerol, phosphatidyldimethylethanolamine, sulfo-quinovosyl diacylglycerol and three uncharacterized phospholipids. The level of DNA–DNA relatedness between strain sw-2T and Roseivivax halodurans Och 239T was only 15.0 %. The results of physiological and biochemical tests allowed the clear phenotypic differentiation of the novel strain from all established species of the genus Roseivivax . Based on the genotypic, phenotypic and chemotaxonomic data, strain sw-2T represents a novel species in the genus Roseivivax , for which the name Roseivivax isoporae sp. nov. is proposed. The type strain is sw-2T ( = LMG 25204T = BCRC 17966T).

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