Leucobacter soli sp. nov., from soil amended with humic acid

Author(s):  
Peter Kämpfer ◽  
John A. McInroy ◽  
Dominique Clermont ◽  
Meina Neumann-Schaal ◽  
Alexis Criscuolo ◽  
...  

A Gram-positive, non-spore-forming actinobacterium (IMT-300T) was isolated from soil amended with humic acid in Malvern, AL, USA. This soil has been used for 50+years for the cultivation of earthworms for use as fish bait. Based on 16S rRNA gene sequence similarity studies, strain IMT-300T was shown to belong to the genus Leucobacter and was closely related to the type strain of ‘Leucobacter margaritiformis’ L1T (97.8%). Similarity to all other type strains of Leucobacter species was lower than 97.2 %. The average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between the IMT-300T genome assembly and those of the closest relative Leucobacter type strain were 81.4 and 23.3 % ( Leucobacter chironomi ), respectively. The peptidoglycan of strain IMT-300T contained l-2,4-diaminobutyric acid as the diagnostic diamino acid. In addition, glycine, d- and l-alanine and d-glutamic acid were found. The peptidoglycan type represents a variant of B2δ (B11). The major quinones were menaquinones MK-10 and MK-11. The polar lipid profile consisted of the major lipids diphosphatidylglycerol, phosphatidylglycerol and moderate to minor amounts of two unidentified phospholipids, two unidentified glycolipids and an unidentified aminophospholipid. The polyamine pattern contained major amounts of spermidine and spermine. Strain IMT-300T contained the major fatty acids C15 : 0 anteiso, C16 : 0 iso and C17 : 0 anteiso, like other members of the genus Leucobacter . The results of ANI and dDDH analyses and physiological and biochemical tests allowed a genotypic and phenotypic differentiation of strain IMT-300T from the most closely related Leucobacter species. Strain IMT-300T represents a novel Leucobacter species, for which we propose the name Leucobacter soli sp. nov., with the type strain IMT-300T (CIP 111803T=DSM 110505T=CCM 9020T=LMG 31600T).

2013 ◽  
Vol 63 (Pt_2) ◽  
pp. 496-501 ◽  
Author(s):  
Dong-Shan An ◽  
Qing-Mei Liu ◽  
Hyung-Gwan Lee ◽  
Mi-Seon Jung ◽  
Sun-Chan Kim ◽  
...  

Two novel bacteria, designated strains Gsoil 634T and Dae 20T, were isolated in South Korea from soil of a ginseng field and freshwater sediment, respectively and were characterized by a polyphasic approach to clarify their taxonomic positions. Phylogenetic analysis based on 16S rRNA gene sequences indicated that, although they probably represented two distinct species (indicated by a sequence similarity of 96.6 %), both strain Gsoil 634T and strain Dae 20T belonged to the genus Sphingomonas and were most closely related to ‘Sphingomonas humi’ PB323 (97.8 % and 96.7 % sequence similarity, respectively), Sphingomonas kaistensis PB56T (96.8 % and 96.7 %), Sphingomonas astaxanthinifaciens TDMA-17T (96.6 % and 95.4 %) and Sphingomonas jaspsi TDMA-16T (95.6 % and 95.8 %). For both novel strains, the major ubiquinone was Q-10, the major polyamine was homospermidine, the major cellular fatty acids included summed feature 7 (C18 : 1ω7c, C18 : 1ω9t and/or C18 : 1ω12t), C17 : 1ω6c and C16 : 0, and the polar lipids included sphingoglycolipid. These chemotaxonomic data supported the affiliation of both strains to the genus Sphingomonas . However, the DNA–DNA relatedness value between strain Gsoil 634T and ‘Sphingomonas humi’ PB323T was 31 %. Moreover, the results of physiological and biochemical tests allowed the phenotypic differentiation of strains Gsoil 634T and Dae 20T from established members of the genus Sphingomonas . Based on these data, the two isolates represent two novel species in the genus Sphingomonas , for which the names Sphingomonas ginsengisoli sp. nov. (type strain Gsoil 634T = KCTC 12630T = DSM 18094T = LMG 23739T) and Sphingomonas sediminicola sp. nov. (type strain Dae 20T  = KCTC 12629T = DSM 18106T = LMG 23592T) are proposed.


2013 ◽  
Vol 63 (Pt_1) ◽  
pp. 119-123 ◽  
Author(s):  
P. Kämpfer ◽  
S. P. Glaeser ◽  
J. Schäfer ◽  
N. Lodders ◽  
K. Martin ◽  
...  

A Gram-positive, non-spore-forming actinobacterium (01-Gi-040T) isolated from an indoor wall was studied to examine its taxonomic position. The isolate formed a very rudimentary substrate-mycelium that fragmented into rod-shaped to coccoid cells. On the basis of the 16S rRNA gene sequence similarity studies, strain 01-Gi-040T was shown to belong to the genus Ornithinimicrobium closely related to Ornithinimicrobium kibberense K22-20T (97.1 %), Ornithinimicrobium humiphilum DSM 12362T (96.2 %) and Ornithinimicrobium pekingense LW6T (96.1 %). A close relationship was also found with Arsenicicoccus bolidensis CCUG 47306T (95.9 %) and Arsenicicoccus piscis Kis4-19T (95.7 %) and a moderate relationship to the type strains of the genus Serinicoccus (94.0–94.1 %). The predominant menaquinone of strain 01-Gi-040T was MK-8(H4). The peptidoglycan contained ornithine as the diagnostic diamino acid. The polar lipid profile consisted of the lipids phosphatidylinositol, phosphatidylglycerol, diphosphatidylglycerol, an unknown phospholipid, an unknown aminolipid and two unknown phosphoglycolipids. The major fatty acids iso-C15 : 0, iso-C16 : 0 and iso-C17 : 0 were consistent with the fatty acid patterns reported for members of the genus Ornithinimicrobium . The results of DNA–DNA hybridizations, physiological and biochemical tests allowed phenotypic differentiation of strain 01-Gi-040T from the three recognized species of the genus Ornithinimicrobium . Strain 01-Gi-040T represents a novel species of the genus Ornithinimicrobium , for which we propose the name Ornithinimicrobium murale sp. nov., with the type strain 01-Gi-040T ( = DSM 22056T = CCM 7610T).


2013 ◽  
Vol 63 (Pt_10) ◽  
pp. 3715-3719 ◽  
Author(s):  
Xiao-lin Zou ◽  
Xiu-ai Li ◽  
Xu-Ming Wang ◽  
Qiang Chen ◽  
Miao Gao ◽  
...  

A novel Gram-stain-negative, aerobic, rod-shaped strain designated PG04T was isolated from the rhizosphere of watermelon plants cultivated in Beijing, China. A polyphasic taxonomic study was performed on the new isolate. On the basis of 16S rRNA gene sequence similarity studies, isolate PG04T belonged clearly to the genus Hansschlegelia and was most closely related to Hansschlegelia zhihuaiae (97.3 % similarity to the type strain). The predominant respiratory quinone was ubiquinone 10 (Q-10) and the polar lipid profile was composed of the major lipids diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine. The major fatty acids were C18 : 1ω7c (41.3 %), C19 : 0 cyclo ω8c (30.6 %) and C16 : 0 (19.1 %). The G+C content of the DNA was about 64.4 mol%. DNA–DNA hybridization experiments showed 34.4 % relatedness between strain PG04T and H. zhihuaiae DSM 18984T. The results of physiological and biochemical tests and differences in fatty acid profiles allowed clear phenotypic differentiation of strain PG04T from the most closely related species in the genus, H. zhihuaiae . Strain PG04T therefore represents a novel species within the genus Hansschlegelia , for which the name Hansschlegelia beijingensis sp. nov. is proposed, with the type strain PG04T ( = DSM 25481T = ACCC 05759T).


Author(s):  
Stefanie P. Glaeser ◽  
Christian Rückert ◽  
Usama Ramadan Abdelmohsen ◽  
Anika Winkler ◽  
Jochen Blom ◽  
...  

A Gram-stain-positive bacterium, strain RV15T, forming an extensively branched substrate mycelium and aerial hyphae that differentiate into spiral chains of spores, was isolated from a marine sponge Dysidea tupha collected from Rovinj (Croatia). Comparison of 16S rRNA gene sequences showed that strain RV15T is a member of the genus Streptomyces with highest sequence similarity to the type strains of Streptomyces caeruleatus (98.8 %), Streptomyces cyaneochromogenes (98.6 %) and Streptomyces shaanxiensis (98.5 %). Sequence similarities to all other Streptomyces types strains were below 98.5 %. The multilocus sequence analysis-based evolutionary distance, the average nucleotide identity value and the genome-to-genome distance of strain RV15T and the type strain of S. caeruleatus were clearly below the species cut-off values. Strain RV15T exhibited a quinone system composed of the major menaquinones MK-9(H4), MK-9(H6) and MK-9(H2), typical for the genus Streptomyces . The polar lipid profile of strain RV15T consisted of the predominant compounds diphosphatidylglycerol and phosphatidylethanolamine, moderate amounts of phosphatidylinositol, phosphatidylinositol mannoside, an unidentified lipid and an unidentified phospholipid. Major polyamines were spermine and spermidine. The diagnostic diaminoacid of the peptidoglycan was meso-diaminopimelic acid. The major fatty acids were iso C16 : 0, anteiso C17 : 1 ω9c and anteiso C17 : 0. The results of physiological and biochemical tests allowed further phenotypic differentiation of strain RV15T from its most-related species and hence clearly merits species status. We propose the name Streptomyces dysideae sp. nov. with the type strain RV15T (=DSM 42110T=LMG 27702T).


2020 ◽  
Vol 70 (10) ◽  
pp. 5355-5362 ◽  
Author(s):  
Heeyoung Kang ◽  
Inseong Cha ◽  
Haneul Kim ◽  
Kiseong Joh

Two novel strains (HMF3257T and HMF4905T), isolated from freshwater and bark samples, were investigated to determine their relationships within and between species of the genus Spirosoma by using a polyphasic approach. They were aerobic, Gram-stain-negative, non-motile and rod-shaped bacteria. The major fatty acids (>10%) in both strains were identified as summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c) and C16 : 1 ω5c, while strains HMF3257T and HMF4905T contained a moderately high amount of C16 : 0 and iso-C15 : 0, respectively. The predominant respiratory quinone was MK-7 for both strains. In addition to phosphatidylethanolamine and one unidentified glycolipid, the polar lipid profile of strain HMF3257T consisted of three unidentified aminophospholipids, one unidentified aminolipid and two unidentified polar lipids, and that of strain HMF4905T consisted of one unidentified aminophospholipid, two unidentified aminolipids and three unidentified polar lipids. The DNA G+C contents of strains HMF3257T and HMF4905T were 47.2 and 46.4 mol%, respectively. Phylogenetic analysis based on 16S rRNA gene sequences showed that strains HMF3257T and HMF4905T are closely related to Spirosoma migulaei 15J9-8T (97.0 % sequence similarity), while sharing 97.4 % sequence similarity with each other. The average nucleotide identity value between strains HMF3257T and HMF4905T was 81.1 %, and the digital DNA–DNA hybridization value between these two strains was 24.4 %. Based on the above data, strains HMF3257T and HMF4905T represent two novel members within the genus Spirosoma , for which the names Spirosoma telluris sp. nov. and Spirosoma arboris sp. nov. are proposed, respectively. The type strain of S. telluris is HMF3257T (=KCTC 62463T=NBRC 112670T) and type strain of S. arboris is HMF4905T (=KCTC 72779T=NBRC 114270T).


Author(s):  
Qi Zhang ◽  
Guohong Liu ◽  
Manik Prabhu Narsing Rao ◽  
Rong Tang ◽  
Shang Yang ◽  
...  

Two Gram-stain-negative, motile, facultatively anaerobic, rod-shaped strains, FJAT-53720T and FJAT-53726, were isolated from rhizosphere sediment of plant Cyperus malaccensis. Phylogenetic analysis based on their 16S rRNA gene sequences revealed that strains FJAT-53720T and FJAT-53726 were affiliated to the genus Shewanella (forming an independent cluster) with the highest sequence similarity to the type strain of Shewanella algae . Optimum growth of both strains was observed at 30 °C and pH 7. The respiratory quinones were Q-7, Q-8 and MK-7. The polar lipid profile included phosphatidylmethyl ethanolamine, phosphatidylethanolamine, diphosphatidylglycerol, one unidentified aminophospholipid and four unknown phospholipids. The major fatty acids of strains FJAT-53720T and FJAT-53726 were iso-C15:0, C17 : 1 ω8c and summed feature 3. The genomic DNA G+C content of strain FJAT-53720T was 55.6 mol%. The average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between FJAT-53720T and FJAT-53726 were 97.4 and 77.9 %, confirming that they were similar species and hence FJAT-53720T was selected for further analysis. The ANI and dDDH values between FJAT-53720T and other members of the genus Shewanella were below the cut-off level (95–96 %; 70 %) for species delineation. Based on the above results, FJAT-53720T represents a novel species of the genus Shewanella , for which the name Shewanella cyperi sp. nov. is proposed. The type strain is FJAT-53720T (=KCTC 82444T=GDMCC 1.2207T).


2014 ◽  
Vol 64 (Pt_9) ◽  
pp. 3069-3074 ◽  
Author(s):  
YongJin Park ◽  
MooChang Kook ◽  
Hien T. T. Ngo ◽  
Ki-Young Kim ◽  
Sang-Yong Park ◽  
...  

A Gram-stain-positive, aerobic, motile by gliding, rod-shaped bacterial strain, THG-GM18T, was isolated from soil of a bamboo grove. Strain THG-GM18T was able to grow in the presence of up to 6.0 % (w/v) NaCl, at 4–37 °C and at pH 7.0–10.0 in R2A medium. Based on 16S rRNA gene sequence similarity, strain THG-GM18T was closely related to species of the genus Arthrobacter . The most closely related strains to strain THG-GM18T are Arthrobacter ramosus CCM 1646T (98.5 % similarity), Arthrobacter nitroguajacolicus G2-1T (98.4 %), Arthrobacter nicotinovorans DSM 420T (98.2 %), Arthrobacter aurescens DSM 20116T (98.1 %) and Arthrobacter chlorophenolicus A6T (98.0 %). Strain THG-GM18T possessed chemotaxonomic properties consistent with those of members of the genus Arthrobacter , such as peptidoglycan type A3α (l-Lys–l-Ala–l-Thr–l-Ala), MK-9 as major menaquinone and anteiso- and iso-branched compounds (anteiso-C15 : 0, iso-C16 : 0 and anteiso-C17 : 0) as major cellular fatty acids. The polar lipid profile contained diphosphatidylglycerol, phosphatidylglycerol, an unidentified phosphoglycolipid, unidentified phospholipids, unidentified aminolipids, an unidentified glycolipid and unidentified lipids. The G+C content of the genomic DNA was 61.0 mol%. The DNA–DNA relatedness values between strain THG-GM18T and its closest phylogenetic neighbours were below 26.0 %. The results of physiological and biochemical tests allowed the differentiation of strain THG-GM18T from species of the genus Arthrobacter with validly published names. Arthrobacter bambusae sp. nov. is the proposed name, and the type strain is THG-GM18T ( = KACC 17531T = JCM 19335T).


2010 ◽  
Vol 60 (2) ◽  
pp. 271-274 ◽  
Author(s):  
Jenny Schäfer ◽  
Karin Martin ◽  
Peter Kämpfer

A Gram-positive, coccoid-shaped organism (strain 02-Je-010T), forming yellow-pigmented colonies was isolated from the wall of an indoor environment. On the basis of 16S rRNA gene sequence similarity studies, it was shown that strain 02-Je-010T belongs to the genus Citricoccus with sequence similarities of 98.9 % to Citricoccus alkalitolerans DSM 15665T and 98.6 % to Citricoccus muralis DSM 14442T. Cell-wall sugars were mannose and glucose. The diagnostic diamino acid of the peptidoglycan was lysine. The major menaquinones detected were MK-9(H2) and MK-8(H2). The polar lipid profile consisted of the major lipids diphosphatidylglycerol, phosphatidylglycerol and phosphatidylinositol and moderate amounts of two unknown phospholipids and two unknown glycolipids. The fatty acid profile comprised major amounts of anteiso-C15 : 0, anteiso-C17 : 0 and iso-C15 : 0. All these data supported the affiliation of strain 02-Je-010T to the genus Citricoccus. The results of DNA–DNA hybridization and physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain 02-Je-010T from the two recognized Citricoccus species. For these reasons, strain 02-Je-010T represents a novel species, for which the name Citricoccus parietis sp. nov. is proposed, with the type strain 02-Je-010T (=CCUG 57388T=CCM 7609T).


2013 ◽  
Vol 63 (Pt_1) ◽  
pp. 230-235 ◽  
Author(s):  
P. Kämpfer ◽  
K. Martin ◽  
W. Dott

Two Gram-stain-positive, non-endospore-forming actinobacteria (Ca8Tand Ca14) were isolated from a bioreactor with extensive phosphorus removal. Based on 16S rRNA gene sequence similarity comparisons, strains Ca8T and Ca14 were shown to belong to the genus Gordonia and were most closely related to Gordonia hirsuta DSM 44140T (98.0 % sequence similarity) and Gordonia hydrophobica DSM 44015T (97.2 %). In comparison with the sequences of the type strains of all other species of the genus Gordonia tested, similarities were below 97 %. The quinone systems of the strains were determined to consist predominantly of MK-9H2. The polar lipid profile for both organisms consisted of diphosphatidylglycerol, phosphatidylglycerol, phospatidylethanolamine, phosphatidylinositol and phosphatidylinositol mannoside. Whole-organism hydrolysates contained meso-diaminopimelic acid as the diamino acid of the peptidoglycan; mycolic acids were detected as well. These chemotaxonomic traits and the major fatty acids, which were C16 : 1 cis-9, C16 : 0 and C18 : 1 and tuberculostearic acid strongly supported the grouping of strains Ca8T and Ca14 into the genus Gordonia . The two strains showed a DNA–DNA similarity of 96 %. DNA–DNA hybridizations of strain Ca8T with G. hirsuta DSM 44140T and G. hydrophobica DSM 44015T resulted in values of 26.3 and 25.0 %, respectively. These results and those of the physiological and biochemical tests allowed a clear phenotypic differentiation of strains Ca8T and Ca14 from the most closely related species of the genus Gordonia . It is concluded that strains Ca8T and Ca14 represent a novel species, for which the name Gordonia phosphorivorans sp. nov. is proposed, with the type strain Ca8T ( = DSM 45630T = CCUG 61533T = CCM 7957T = LMG 26648T).


2013 ◽  
Vol 63 (Pt_11) ◽  
pp. 3950-3957 ◽  
Author(s):  
Sofie E. De Meyer ◽  
Margo Cnockaert ◽  
Julie K. Ardley ◽  
Garth Maker ◽  
Ron Yates ◽  
...  

Seven Gram-stain-negative, rod-shaped bacteria were isolated from Lebeckia ambigua root nodules and authenticated on this host. Based on the 16S rRNA gene phylogeny, they were shown to belong to the genus Burkholderia , with the representative strain WSM5005T being most closely related to Burkholderia tuberum (98.08 % sequence similarity). Additionally, these strains formed a distinct group in phylogenetic trees based on the housekeeping genes gyrB and recA. Chemotaxonomic data including fatty acid profiles and analysis of respiratory quinones supported the assignment of the strains to the genus Burkholderia . Results of DNA–DNA hybridizations, and physiological and biochemical tests allowed genotypic and phenotypic differentiation of our strains from the closest species of the genus Burkholderia with a validly published name. Therefore, these strains represent a novel species for which the name Burkholderia sprentiae sp. nov. (type strain WSM5005T = LMG 27175T = HAMBI 3357T) is proposed.


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