scholarly journals Clostridium punense sp. nov., an obligate anaerobe isolated from healthy human faeces

2015 ◽  
Vol 65 (Pt_12) ◽  
pp. 4749-4756 ◽  
Author(s):  
Vikram Bholanath Lanjekar ◽  
Nachiket Prakash Marathe ◽  
Yogesh Shreepad Shouche ◽  
Dilip Ramchandra Ranade
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Volatile Fatty Acids ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Healthy Human

An obligately anaerobic, rod-shaped (0.5–1.0 × 2.0–10.0 μm), Gram-stain-positive bacterium, occurring mainly singly or in pairs, and designated BLPYG-8T, was isolated from faeces of a healthy human volunteer aged 56 years. Cells were non-motile. Oval, terminal spores were formed that swell the cells. The strain was affiliated with the genus Clostridium sensu stricto (Clostridium rRNA cluster I) as revealed by 16S rRNA gene sequence analysis. Strain BLPYG-8T showed 97.3 to 97.4 % 16S rRNA gene sequence similarity with Clostridium sulfidigenes DSM 18982T, Clostridium subterminale DSM 6970T and Clostridium thiosulfatireducens DSM 13105T. DNA–DNA hybridization and phenotypic analysis showed that the strain was distinct from its closest relatives, C. sulfidigenes DSM 18982T, C. subterminale DSM 6970T, C. thiosulfatireducens DSM 13105T with 54.2, 53.9 and 53.3 % DNA–DNA relatedness, respectively. Strain BLPYG-8T grew in PYG broth at temperatures between 20 and 40 °C (optimum 37 °C). The strain utilized a range of amino acids as well as carbohydrates as a source of carbon and energy. Glucose fermentation resulted in the formation of volatile fatty acids mainly acetic acid, n-butyric acid and organic acids such as succinic and lactic acid. The DNA G+C content of strain BLPYG-8T was 44.1 mol%. The major fatty acids (>10 %) were C14 : 0, iso-C15 : 0, C16 : 1ω7c and C16 : 0. Phylogenetic analysis and specific phenotypic characteristics and/or DNA G+C content differentiated the strain from its closest relatives. On the basis of these data, strain BLPYG-8T represents a novel species of the genus Clostridium, for which the name Clostridium punense sp. nov. is proposed. The type strain is BLPYG-8T ( = DSM 28650T = CCUG 64195T = MCC 2737T).

scholarly journals Paucibacter toxinivorans gen. nov., sp. nov., a bacterium that degrades cyclic cyanobacterial hepatotoxins microcystins and nodularin

2005 ◽  
Vol 55 (4) ◽  
pp. 1563-1568 ◽  
Author(s):  
Jarkko Rapala ◽  
Katri A. Berg ◽  
Christina Lyra ◽  
R. Maarit Niemi ◽  
Werner Manz ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
Carbon Sources ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence

Thirteen bacterial isolates from lake sediment, capable of degrading cyanobacterial hepatotoxins microcystins and nodularin, were characterized by phenotypic, genetic and genomic approaches. Cells of these isolates were Gram-negative, motile by means of a single polar flagellum, oxidase-positive, weakly catalase-positive and rod-shaped. According to phenotypic characteristics (carbon utilization, fatty acid and enzyme activity profiles), the G+C content of the genomic DNA (66·1–68·0 mol%) and 16S rRNA gene sequence analysis (98·9–100 % similarity) the strains formed a single microdiverse genospecies that was most closely related to Roseateles depolymerans (95·7–96·3 % 16S rRNA gene sequence similarity). The isolates assimilated only a few carbon sources. Of the 96 carbon sources tested, Tween 40 was the only one used by all strains. The strains were able to mineralize phosphorus from organic compounds, and they had strong leucine arylamidase and chymotrypsin activities. The cellular fatty acids identified from all strains were C16 : 0 (9·8–19 %) and C17 : 1 ω7c (<1–5·8 %). The other predominant fatty acids comprised three groups: summed feature 3 (<1–2·2 %), which included C14 : 0 3-OH and C16 : 1 iso I, summed feature 4 (54–62 %), which included C16 : 1 ω7c and C15 : 0 iso OH, and summed feature 7 (8·5–28 %), which included ω7c, ω9c and ω12t forms of C18 : 1. A more detailed analysis of two strains indicated that C16 : 1 ω7c was the main fatty acid. The phylogenetic and phenotypic features separating our strains from recognized bacteria support the creation of a novel genus and species, for which the name Paucibacter toxinivorans gen. nov., sp. nov. is proposed. The type strain is 2C20T (=DSM 16998T=HAMBI 2767T=VYH 193597T).

Sandarakinotalea sediminis gen. nov., sp. nov., a novel member of the family Flavobacteriaceae

2006 ◽  
Vol 56 (5) ◽  
pp. 959-963 ◽  
Author(s):  
Shams Tabrez Khan ◽  
Yasuyoshi Nakagawa ◽  
Shigeaki Harayama
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Heterotrophic Bacteria ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
The Family

Four Gram-negative, orange-coloured, aerobic, heterotrophic bacteria were isolated from sediment samples collected on the Pacific coast of Japan near the cities of Toyohashi and Katsuura. 16S rRNA gene sequence analysis indicated that these strains form a distinct lineage within the family Flavobacteriaceae. The four isolates shared 99.9–100 % 16S rRNA gene sequence similarity with each other and showed 88–90.9 % similarity with their neighbours in the family Flavobacteriaceae. The four strains also shared high DNA–DNA reassociation values of 67–99 % with each other. All the strains grew at 37 °C but not at 4 °C, and degraded gelatin, starch and DNA. The major fatty acids were i-C15 : 0, a-C15 : 0, i-C16 : 0 and i-C17 : 0 3-OH. However, two common fatty acids of members of the Flavobacteriaceae, i-C15 : 1 and a-C15 : 1, were absent in these strains. The DNA G+C contents of the four strains were in the range 35–37 mol%. On the basis of the polyphasic evidence, it was concluded that these strains should be classified as a novel genus and a novel species in the family Flavobacteriaceae, for which the name Sandarakinotalea sediminis gen. nov., sp. nov. is proposed. The type strain of Sandarakinotalea sediminis is CKA-5T (=NBRC 100970T=LMG 23247T).

scholarly journals Cohnella yongneupensis sp. nov. and Cohnella ginsengisoli sp. nov., isolated from two different soils

2010 ◽  
Vol 60 (3) ◽  
pp. 526-530 ◽  
Author(s):  
Soo-Jin Kim ◽  
Hang-Yeon Weon ◽  
Yi-Seul Kim ◽  
Rangasamy Anandham ◽  
Young-Ah Jeon ◽  
...  
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Major Polar Lipid ◽  
Rrna Gene Sequence

Two aerobic, Gram-positive, rod-shaped bacterial strains, 5YN10-14T and GR21-5T, were isolated from the Yongneup wetland and ginseng soil in Korea, respectively. The two strains formed ellipsoidal or oval spores positioned centrally or paracentrally in swollen sporangia. On the basis of 16S rRNA gene sequence analysis, these strains were related to members of the genus Cohnella. 16S rRNA gene sequence similarity between strains 5YN10-14T and GR21-5T was 95.9 %. Strains 5YN10-14T and GR21-5T showed, respectively, 94.3 and 95.2 % 16S rRNA gene sequence similarity to Cohnella thermotolerans CCUG 47242T, 94.6 and 94.4 % to Cohnella hongkongensis HKU3T, 94.7 and 94.7 % to Cohnella laeviribosi RI-39T, and 95.4 and 94.8 % to Cohnella phaseoli GSPC1T. The major fatty acids of strain 5YN10-14T were anteiso-C15 : 0 (51.1 %), iso-C16 : 0 (18.5 %) and C16 : 0 (13.2 %), and the major fatty acids of strain GR21-5T were anteiso-C15 : 0 (48.9 %), iso-C16 : 0 (15.0 %) and iso-C15 : 0 (12.2 %). The two strains contained menaquinone with seven isoprene units (MK-7) as the predominant quinone, and diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine as major polar lipids; however, strain 5YN10-14T also contained lysylphosphatidylglycerol as a major polar lipid, whereas strain GR21-5T had an unknown aminophospholipid as another major polar lipid. The DNA G+C contents of strains 5YN10-14T and GR21-5T were 58.8 and 61.3 mol%, respectively. Based on the results of the phylogenetic and phenotypic data presented, it was concluded that the two strains represent two novel species of the genus Cohnella, for which the names Cohnella yongneupensis sp. nov. (type strain 5YN10-14T=KACC 11768T=DSM 18998T) and Cohnella ginsengisoli sp. nov. (type strain GR21-5T=KACC 11771T=DSM 18997T) are proposed.

scholarly journals Sneathiella chinensis gen. nov., sp. nov., a novel marine alphaproteobacterium isolated from coastal sediment in Qingdao, China

2007 ◽  
Vol 57 (1) ◽  
pp. 114-121 ◽  
Author(s):  
Elizabeth Mary Jordan ◽  
Fabiano L. Thompson ◽  
Xiao-Hua Zhang ◽  
Yun Li ◽  
Marc Vancanneyt ◽  
...  
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
Coastal Sediment ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Separate Branch

The taxonomic position of strain LMG 23452T, which was isolated from coastal sediment from an aquaculture site near Qingdao, China, in 2000, was determined. Strain LMG 23452T comprised Gram-negative, non-spore-forming, motile rods and was found to be a halotolerant, aerobic, chemoheterotroph that produces catalase and oxidase. Comparative 16S rRNA gene sequence analysis revealed that strain LMG 23452T shared approximately 89 % sequence similarity with members of the genera Devosia, Hyphomonas, Ensifer and Chelatococcus, which belong to two different orders within the Alphaproteobacteria. Further phylogenetic analysis of the 16S rRNA gene sequence showed that strain LMG 23452T formed a separate branch within the order Rhizobiales, falling between the genera Devosia and Ensifer of the families Hyphomicrobiaceae and Rhizobiaceae, respectively. Strain LMG 23452T could be differentiated from its closest phylogenetic neighbours on the basis of several phenotypic features, including hydrolysis of the substrates starch and casein and assimilation of the carbohydrates d-glucose, d-mannose, mannitol, maltose and l-arabinose, and chemotaxonomically by the presence of the fatty acids C14 : 0 3-OH, C16 : 1 ω11c, C16 : 1 ω5c and C18 : 1 ω5c. The major fatty acids detected in strain LMG 23452T were C18 : 1 ω7c, C16 : 0, C19 : 0 cyclo ω8c, C16 : 1 ω7c and C17 : 1 ω6c and the G+C content of the genomic DNA was 57.1 mol%. Therefore, the polyphasic data support the placement of strain LMG 23452T within a novel genus and species, for which the name Sneathiella chinensis gen. nov., sp. nov. is proposed. The type strain is LMG 23452T (=CBMAI 737T).

scholarly journals Description of Undibacterium oligocarboniphilum sp. nov., isolated from purified water, and Undibacterium pigrum strain CCUG 49012 as the type strain of Undibacterium parvum sp. nov., and emended descriptions of the genus Undibacterium and the species Undibacterium pigrum

2011 ◽  
Vol 61 (2) ◽  
pp. 384-391 ◽  
Author(s):  
Wolfgang Eder ◽  
Gerhard Wanner ◽  
Wolfgang Ludwig ◽  
Hans-Jürgen Busse ◽  
Frank Ziemke-Kägeler ◽  
...  
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Polar Lipid Profile

A Gram-negative, oxidase- and catalase-positive, flagellated, rod-shaped bacterium, designated strain EM 1T, was isolated from purified water. 16S rRNA gene sequence analysis indicated that the novel strain belonged to the family Oxalobacteraceae within the class Betaproteobacteria; the closest phylogenetic relative was Undibacterium pigrum DSM 19792T (96.7 % gene sequence similarity). The new isolate could be distinguished from the type strain of U. pigrum DSM 19792T (=CCUG 49009T=CIP 109318T) and from strain CCUG 49012T, which has been described as a second genomovar of this species, on the basis of genotypic data and several phenotypic properties. An S-layer was present in the cell envelope in U. pigrum DSM 19792T, but was absent in strains EM 1T and CCUG 49012T. Test conditions were established that enabled strain CCUG 49012T to be distinguished from U. pigrum DSM 19792T. As found for U. pigrum, the main fatty acids of strains EM 1T and CCUG 49012T were summed feature 3 (including unsaturated C16 : 1 ω7c), straight-chain C16 : 0 and unsaturated C18 : 1 ω7c (low percentage in strain CCUG 49012T), and C10 : 0 3-OH was the sole hydroxylated fatty acid. The polar lipid profile consisted of the predominant lipids phosphatidylethanolamine, diphosphatidylglycerol and phosphatidylglycerol. The polyamine profile was mainly composed of the major compound putrescine and moderate amounts of 2-hydroxyputrescine. In contrast to U. pigrum and strain CCUG 49012T, where ubiquinone Q8 was reported as the sole quinone component, the quinone system of strain EM 1T consisted of ubiquinone Q-8 (64 %) and Q-7 (36 %). The 16S rRNA gene sequence similarity, the polar lipid profile and the absence of C12-hydroxylated fatty acids all indicated that strain EM 1T was affiliated with the genus Undibacterium. 16S rRNA gene sequence similarity values lower than 97.0 % and several differentiating phenotypic traits demonstrated that strain EM 1T represents a novel species for which the name Undibacterium oligocarboniphilum sp. nov. is proposed (type strain EM 1T=DSM 21777T=CCUG 57265T). In addition, based on previously published results and this study, a separate species, Undibacterium parvum sp. nov., is proposed with strain CCUG 49012T (=DSM 23061T=CIP 109317T) as the type strain.

scholarly journals Luteipulveratus mongoliensis gen. nov., sp. nov., an actinobacterial taxon in the family Dermacoccaceae

2010 ◽  
Vol 60 (3) ◽  
pp. 574-579 ◽  
Author(s):  
Ismet Ara ◽  
Hideki Yamamura ◽  
Baljinova Tsetseg ◽  
Damdinsuren Daram ◽  
Katsuhiko Ando
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
Taxonomic Status ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
The Family

A novel actinobacterial strain, MN07-A0370T, was isolated from Mongolian soil and its taxonomic status was determined using a polyphasic approach. Comparative 16S rRNA gene sequence studies revealed that strain MN07-A0370T represented a novel lineage within the actinobacteria. Strain MN07-A0370T formed a distinct clade in the family Dermacoccaceae and was most closely related to the members of the genera Dermacoccus (16S rRNA gene sequence similarity, 96.2 %–96.4 %), Demetria (94.1 %) and Kytococcus (93.7 %). The cell-wall peptidoglycan of the novel strain contained l-lysine, alanine, aspartic acid, glutamic acid and serine and represented peptidoglycan type A4α. The menaquinones were MK-8(H4) and MK-8(H6). The polar lipids were phosphatidylglycerol, diphosphatidylglycerol and phosphatidylinositol and the whole-cell sugars were galactose, mannose, rhamnose, ribose and glucose. Mycolic acids were absent. The fatty acid profile was characterized by the presence of large amounts of saturated iso- and anteiso-branched-chain fatty acids as well as smaller amounts of saturated straight-chain and unsaturated acids. The major fatty acids were iso-C16 : 0, anteiso-C17 : 0, iso-C16 : 1 H, C17 : 1 ω9c and C17 : 0 10-methyl. The G+C content of the DNA was 68.2 mol%. On the basis of chemotaxonomic, physiological and biochemical differences from other genera of the family Dermacoccaceae, strain MN07-A0370T should be classified as representing a novel species in a new genus, for which we propose the name Luteipulveratus mongoliensis gen. nov., sp. nov. The type strain is MN07-A0370T (=NBRC 105296T=VTCC D9-09T).

scholarly journals Winogradskyella exilis sp. nov., isolated from the starfish Stellaster equestris, and emended description of the genus Winogradskyella

2010 ◽  
Vol 60 (7) ◽  
pp. 1577-1580 ◽  
Author(s):  
Elena P. Ivanova ◽  
Richard Christen ◽  
Nataliya M. Gorshkova ◽  
Natalia V. Zhukova ◽  
Valeriya V. Kurilenko ◽  
...  
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Total Fatty Acids

A pale-yellowish-pigmented strain, 022-2-26T, was isolated from a starfish, Stellaster equestris. Cells of strain 022-2-26T were Gram-negative short rods that were chemo-organotrophic, alkalitolerant and mesophilic. The predominant menaquinone was MK-6. The major cellular fatty acids were iso-C15 : 0, iso-C15 : 1, C15 : 0, iso-C15 : 0 2-OH and iso-C17 : 0 3-OH (together representing 87 % of the total fatty acids). The DNA G+C content was 30.1 mol%. A 16S rRNA gene sequence of the isolate was determined and phylogenetic analyses revealed that strain 022-2-26T formed a robust clade (neighbour-joining algorithm with a bootstrap value of 95 % and parsimony and maximum-likelihood algorithms) with type strains of species in the genus Winogradskyella. The closest phylogenetic neighbour of strain 022-2-26T was Winogradskyella poriferorum UST030701-295T (96 % 16S rRNA gene sequence similarity; 59 differences between sequences). On the basis of the phenotypic and chemotaxonomic characteristics and the phylogenetic evidence, it is proposed that strain 022-2-26T represents a novel species, Winogradskyella exilis sp. nov. The type strain is 022-2-26T (=KMM 6013T =CIP 109976T).

scholarly journals Pantoea intestinalis sp. nov., isolated from the human gut

2015 ◽  
Vol 65 (Pt_10) ◽  
pp. 3352-3358 ◽  
Author(s):  
Om Prakash ◽  
Yogesh Nimonkar ◽  
Ankita Vaishampayan ◽  
Mrinal Mishra ◽  
Shreyas Kumbhare ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Β Subunit ◽  
Rrna Gene Sequence ◽  
Healthy Human ◽  
Polar Lipid Profile

A novel bacterial strain, 29Y89BT, was isolated from a faecal sample of a healthy human subject. Cells were Gram-stain-negative, motile, non-spore-forming and rod-shaped. Strain 29Y89BT formed cream-coloured colonies 2 mm in diameter on trypticase soy agar and showed optimum growth at 35 °C. Strain 29Y89BT showed highest 16S rRNA gene sequence similarity to Pantoea gaviniae A18/07T (98.4 %) followed by Pantoea calida 1400/07T (97.2 %). Multi-locus sequence analysis using atpD (ATP synthase β subunit), gyrB (DNA gyrase), infB (initiation translation factor 2) and rpoB (RNA polymerase β subunit) genes also supported the result of 16S rRNA gene sequence based phylogeny. Strain 29Y89BT showed 62 and 40.7 % DNA–DNA relatedness with P. calida DSM 22759T and P. gaviniae DSM 22758T. Strain 29Y89BT contained C17  : 0 cyclo, C19  : 0 cyclo ω8c, C16 : 0, C14 : 0 and C12 : 0 as predominant fatty acids. In addition, strain 29Y89BT showed physiological and phenotypic differences from its closest relatives P. gaviniae DSM 22758T and P. calida DSM 22759T. The polar lipid profile mainly comprised phospholipids. The DNA G+C content was 59.1 mol%. Thus, based on the findings of the current study, strain 29Y89BT showed clear delineations from its closest relatives P. gaviniae DSM 22758T and P. calida DSM 22759T, and is thus considered to represent a novel species of the genus Pantoea, for which the name Pantoea intestinalis sp. nov. is proposed. The type strain is 29Y89BT ( = DSM 28113T = MCC 2554T).

scholarly journals Nonomuraea kuesteri sp. nov.

2005 ◽  
Vol 55 (2) ◽  
pp. 847-851 ◽  
Author(s):  
Peter Kämpfer ◽  
Reiner M. Kroppenstedt ◽  
Iris Grün-Wollny
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
Aerial Mycelium ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Biochemical Tests

A Gram-positive, aerobic, non-motile actinomycete, strain GW 14-1925T, that formed branched substrate and aerial mycelium was studied using a polyphasic approach. On the basis of 16S rRNA gene sequence similarity studies, strain GW 14-1925T was shown to belong to the genus Nonomuraea, being most closely related to Nonomuraea longicatena (97·9 %), Nonomuraea turkmeniaca (98·9 %), Nonomuraea helvata (98·6 %), Nonomuraea polychroma (98·5 %), Nonomuraea salmonaea (98·3 %), Nonomuraea roseoviolacea subsp. roseoviolacea (98·1 %) and Nonomuraea roseoviolacea subsp. carminata (97·7 %). The 16S rRNA gene sequence similarity to other Nonomuraea species was <97·5 %. Chemotaxonomic data [major menaquinones of the MK-9 series with minor amounts of MK-8(H4); major polar lipids of phospholipid type IV; fatty acids with major amounts of iso- and anteiso- and 10-methyl-branched fatty acids in combination with iso-branched 2-hydroxy fatty acids] supported allocation of the strain to the genus Nonomuraea. The results of DNA–DNA hybridizations and physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain GW 14-1925T from closely related species; thus, GW 14-1925T represents a novel species of the genus Nonomuraea, for which the name Nonomuraea kuesteri sp. nov. is proposed, with GW 14-1925T (=DSM 44753T=NRRL B-24325T) as the type strain.

scholarly journals Qingshengfania soli gen. nov., sp. nov., a member of the order Rhizobiales isolated from the soil of a pesticide factory

2015 ◽  
Vol 65 (Pt_12) ◽  
pp. 4608-4614 ◽  
Author(s):  
Long Zhang ◽  
Qing-Xin Zhou ◽  
Man Song ◽  
Xiao-Long Chen ◽  
Xi-Hui Xu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Novel Species ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Sequence Comparisons

Two Gram-stain negative, coccoid to oval-shaped, non-spore-forming bacteria (LR4T and LR4-1), isolated from the soil of a pesticide factory in Nanjing, China, were investigated for their taxonomic allocation by using a polyphasic approach. Both strains grew optimally at pH 7.0, 30 °C and in the absence of NaCl. Both strains were positive for catalase and oxidase activities. Q-10 was the predominant respiratory ubiquinone. The major polar lipids were phosphatidylmonomethylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine and two unknown aminolipids. The major fatty acids (>10 % of the total fatty acids) were C18:1ω7c/C18:1ω6c (summed feature 8) and C17:1 iso I/C17:1 anteiso B (summed feature 4). Phylogenetic analysis based on 16S rRNA gene sequence comparisons showed that the two isolates formed a distinct line within a clade containing the genera Chelatococcus, Bosea, Camelimonas, Salinarimonas, Psychroglaciecola, Microvirga, Methylobacterium, Albibacter, Hansschlegelia and Methylopila in the order Rhizobiales, with the highest 16S rRNA gene sequence similarity to Chelatococcus asaccharovorans TE2T (94.12 %), followed by Bosea thiooxidans DSM 9653T (93.25 %). Strains LR4T and LR4-1 were closely related on the basis of DNA–DNA reassociation and therefore represent a single novel species. Based on phenotypic, chemotaxonomic and phylogenetic data, strains LR4T and LR4-1 represent a novel species of a new genus in the order Rhizobiales, for which the name Qingshengfania soli gen. nov., sp. nov. is proposed. The type strain of the type species is LR4T ( = CCTCC AB 2015036T = KCTC 42463T).

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