scholarly journals Rheinheimera texasensis sp. nov., a halointolerant freshwater oligotroph

2007 ◽  
Vol 57 (10) ◽  
pp. 2376-2380 ◽  
Author(s):  
Mubina M. Merchant ◽  
Allana K. Welsh ◽  
Robert J. C. McLean

A Gram-negative, rod-shaped, motile, non-spore-forming bacterium, designated strain A62-14BT, was isolated from a constant-temperature, spring-fed, freshwater lake. On the basis of the complete 16S rRNA gene sequence, strain A62-14BT was shown to belong to the class Gammaproteobacteria, being most closely related to Rheinheimera sp. HTB082 (96.2 % sequence similarity), Rheinheimera baltica (95.01 %), Rheinheimera pacifica (96.35 %), Rheinheimera perlucida and Alishewanella fetalis (95.9 %). The major fatty acids (C16 : 1 ω7c, 38.56 %; C16 : 0, 19.04 %; C12 : 0 3-OH, 12.83 %; C18 : 1 ω7c, 7.70 %) and the motility of strain A62-14BT support its affiliation to the genus Rheinheimera. The salt intolerance of strain A62-14BT, together with the results of other physiological and biochemical tests, allowed the differentiation of this strain from the three species of the genus Rheinheimera with validly published names. Therefore strain A62-14BT represents a novel species of the genus Rheinheimera, for which the name Rheinheimera texasensis sp. nov. is proposed. The type strain is A62-14BT (=ATCC BAA-1235T=DSM 17496T). The description of the genus Rheinheimera is emended to reflect the halointolerance and freshwater origin of strain A62-14BT.

2010 ◽  
Vol 60 (3) ◽  
pp. 478-483 ◽  
Author(s):  
Sathiyaraj Srinivasan ◽  
Myung Kyum Kim ◽  
Gayathri Sathiyaraj ◽  
Yeon-Ju Kim ◽  
Seok-Kyu Jung ◽  
...  

Five Gram-type-positive, aerobic, rod-shaped, non-motile strains of Microbacterium (DCY 17T, Ms1, Ms2, Ms3 and Ms4) were isolated from soil from a ginseng field in Daejeon, South Korea. On the basis of 16S rRNA gene sequence similarity, these strains were shown to be related to Microbacterium esteraromaticum DSM 8609T (96.1 %), M. xylanilyticum DSM 16914T (96.0 %), M. aquimaris JS54-2T (95.6 %), M. insulae DS-66T (95.5 %), M. ketosireducens IFO 14548T (95.5 %) and M. arabinogalactanolyticum DSM 8611T (95.4 %). Chemotaxonomic data revealed that the type strain, DCY 17T, possesses menaquinones MK-12, MK-11 and MK-13 and the predominant fatty acids C15 : 0 anteiso (32.5 %), C15 : 0 iso (27.5 %), C16 : 0 iso (17.0 %), C17 : 0 anteiso (13.2 %), C17 : 0 iso (6.1 %) and C14 : 0 iso (2.1 %). The DNA G+C content of strain DCY 17T is 70.2 mol% and those of strains Ms1 to Ms4 are in the range 68.9–73.5 mol%. The physiological and biochemical tests suggested that these strains represent a novel species. Based on these data, DCY 17T (=KCTC 19237T =LMG 24010T) is classified as the type strain of a novel Microbacterium species, for which the name Microbacterium soli sp. nov. is proposed.


2010 ◽  
Vol 60 (10) ◽  
pp. 2358-2363 ◽  
Author(s):  
Sathiyaraj Srinivasan ◽  
Myung Kyum Kim ◽  
Gayathri Sathiyaraj ◽  
Vaidyanathan Veena ◽  
Muthusamy Mahalakshmi ◽  
...  

A Gram-negative, rod-shaped, motile bacterium was isolated from the soil of a ginseng field in Daejeon, South Korea, and characterized in order to determine its taxonomic position. Phylogenetic analysis based on 16S rRNA gene sequence analysis revealed that strain DCY34T belonged to the family Sphingomonadaceae, and the highest degree of sequence similarity was found with Sphingopyxis witflariensis W-50T (97.1 %), Sphingopyxis ginsengisoli Gsoil 250T (97.0 %), Sphingopyxis chilensis S37T (96.9 %), Sphingopyxis macrogoltabida IFO 15033T (96.8 %), Sphingopyxis alaskensis RB2256T (96.7 %) and Sphingopyxis taejonensis JSS54T (96.7 %). Chemotaxonomic data revealed that strain DCY34T possessed ubiquinone Q-10 as the predominant respiratory lipoquinone, which is common to members of the genus Sphingopyxis. The predominant fatty acids were C18 : 1 ω7c (27.5 %), summed feature 4 (C16 : 1 ω7c and/or C15 : 0 iso 2-OH; 18.6 %), C16 : 0 (15.6 %) and summed feature 8 (C19 : 1 ω6c and/or unknown 18.864; 15.4 %). The major polar lipids were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, sphingoglycolipid and an unknown polar lipid. The results of physiological and biochemical tests clearly demonstrated that strain DCY34T represented a separate species and supported its affiliation to the genus Sphingopyxis. Based on these data, the new isolate represents a novel species, for which the name Sphingopyxis panaciterrulae sp. nov. is proposed. The type strain is DCY34T (=KCTC 22112T=JCM 14844T).


2006 ◽  
Vol 56 (11) ◽  
pp. 2665-2669 ◽  
Author(s):  
Sang-Hoon Baek ◽  
Wan-Taek Im ◽  
Hyun Woo Oh ◽  
Jung-Sook Lee ◽  
Hee-Mock Oh ◽  
...  

A Gram-positive, rod-shaped, spore-forming bacterium, Gsoil 3088T, was isolated from soil from a ginseng field in Pocheon Province in South Korea and characterized in order to determine its taxonomic position. On the basis of 16S rRNA gene sequence similarity, strain Gsoil 3088T was shown to belong to the family Paenibacillaceae, being related to Brevibacillus centrosporus (96.6 %), Brevibacillus borstelensis (96.3 %), Brevibacillus parabrevis (96.1 %), Brevibacillus formosus (96.1 %), Brevibacillus brevis (96.1 %) and Brevibacillus laterosporus (96.0 %). The phylogenetic distances from other validly described species within the genus Brevibacillus were greater than 4.0 % (i.e. there was less than 96.0 % similarity). The G+C content of the genomic DNA was 52.1 mol%. Phenotypic and chemotaxonomic data (major menaquinone, MK-7; fatty acid profile, iso-C15 : 0, iso-C14 : 0 and anteiso-C15 : 0) supported the affiliation of strain Gsoil 3088T to the genus Brevibacillus. The results of physiological and biochemical tests allowed strain Gsoil 3088T to be distinguished genotypically and phenotypically from Brevibacillus species with validly published names. Strain Gsoil 3088T, therefore, represents a novel species of the genus Brevibacillus, for which the name Brevibacillus ginsengisoli sp. nov. is proposed. The type strain is Gsoil 3088T (=KCTC 13938T=LMG 23403T).


2010 ◽  
Vol 60 (7) ◽  
pp. 1522-1526 ◽  
Author(s):  
Ho-Bin Kim ◽  
Sathiyaraj Srinivasan ◽  
Gayathri Sathiyaraj ◽  
Lin-Hu Quan ◽  
Se-Hwa Kim ◽  
...  

A Gram-negative, non-spore-forming, rod-shaped bacterium, designated strain DCY01T, was isolated from soil from a ginseng field in South Korea and was characterized in order to determine its taxonomic position. 16S rRNA gene sequence analysis revealed that strain DCY01T belonged to the Gammaproteobacteria and was most closely related to Stenotrophomonas koreensis KCTC 12211T (98.4 % similarity), Stenotrophomonas humi R-32729T (97.2 %), Stenotrophomonas terrae R-32768 (97.1 %), Stenotrophomonas maltophilia DSM 50170T (96.9 %) and Stenotrophomonas nitritireducens DSM 12575T (96.8 %). Chemotaxonomic analyses revealed that strain DCY01T possessed a quinone system with Q-8 as the predominant compound, and iso-C15 : 0 (28.2 %), C16 : 0 10-methyl (13.2 %), iso-C15 : 1 F (10.8 %) and C15 : 0 (7.5 %) as major fatty acids, corroborating assignment of strain DCY01T to the genus Stenotrophomonas. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. The results of DNA–DNA hybridization and physiological and biochemical tests clearly demonstrated that strain DCY01T represents a species distinct from recognized Stenotrophomonas species. Based on these data, DCY01T (=KCTC 12539T=NBRC 101154T) should be classified as the type strain of a novel species of the genus Stenotrophomonas, for which the name Stenotrophomonas ginsengisoli sp. nov. is proposed.


2006 ◽  
Vol 56 (9) ◽  
pp. 2079-2082 ◽  
Author(s):  
Byung-Yong Kim ◽  
Hang-Yeon Weon ◽  
Kang-Hyo Lee ◽  
Soon-Ja Seok ◽  
Soon-Wo Kwon ◽  
...  

A novel strain, R2A16-10T, was isolated from greenhouse soil in Yeoju, Korea. The taxonomy of strain R2A16-10T was studied by using polyphasic methods. On the basis of 16S rRNA gene sequence analyses, strain R2A16-10T was found to be phylogenetically related to type strains of Dyella species (96.7–96.9 %), Frateuria aurantia DSM 6220T (96.5 %), Fulvimonas soli LMG 19981T (96.3 %) and Rhodanobacter species (94.9–95.7 %). Strain R2A16-10T, which produced yellow-coloured colonies, was Gram-negative, rod-shaped (0.3–0.4×1.5–3.5 μm) and motile. The predominant fatty acids were 17 : 1 iso ω9c (25.5 %), 15 : 0 iso (18.7 %) and 17 : 0 iso (14.6 %), and the major hydroxy fatty acids were 11 : 0 iso 3-OH (5.0 %), 13 : 0 iso 3-OH (3.4 %) and 17 : 0 iso 3-OH (1.0 %). The major isoprenoid quinone was Q-8. The G+C content of the DNA of the type strain was 63.0 mol%. On the basis of the data from this study, strain R2A16-10T represents a novel species of the genus Dyella, for which the name Dyella yeojuensis sp. nov. is proposed. The type strain is R2A16-10T (=KACC 11405T=DSM 17673T).


2007 ◽  
Vol 57 (8) ◽  
pp. 1762-1764 ◽  
Author(s):  
T. N. R. Srinivas ◽  
P. Anil Kumar ◽  
Ch. Sasikala ◽  
Ch. V. Ramana ◽  
J. F. Imhoff

A Gram-negative, rod-shaped, phototrophic bacterium (JA181T) was isolated from a tidal water sample. On the basis of 16S rRNA gene sequence similarity, strain JA181T was shown to belong to the class Alphaproteobacteria, most closely related to Rhodovulum sulfidophilum (97.8 % similarity to the type strain), Rhodovulum adriaticum (93 %), Rhodovulum robiginosum (93 %), Rhodovulum iodosum (94 %), Rhodovulum imhoffii (94 %), Rhodovulum strictum (95 %), Rhodovulum euryhalinum (94.6 %) and Rhodovulum marinum (94.6 %). DNA–DNA hybridization with Rdv. sulfidophilum DSM 1374T (relatedness of 39 % with strain JA181T) and physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain JA181T from the eight Rhodovulum species with validly published names. Strain JA181T therefore represents a novel species, for which the name Rhodovulum visakhapatnamense sp. nov. is proposed (type strain JA181T =JCM 13531T =ATCC BAA-1274T =DSM 17937T).


2011 ◽  
Vol 61 (9) ◽  
pp. 2167-2172 ◽  
Author(s):  
Qi-Yong Tang ◽  
Na Yang ◽  
Jian Wang ◽  
Yu-Qing Xie ◽  
Biao Ren ◽  
...  

A Gram-stain-positive, endospore-forming, rod-shaped bacterium, designated XJ259T, was isolated from a cold spring sample from Xinjiang Uyghur Autonomous Region, China. The isolate grew optimally at 20–30 °C and pH 7.3–7.8. Comparative analysis of the 16S rRNA gene sequence showed that isolate XJ259T belonged phylogenetically to the genus Paenibacillus, and was most closely related to Paenibacillus xinjiangensis B538T (with 96.6 % sequence similarity), Paenibacillus glycanilyticus DS-1T (96.3 %) and Paenibacillus castaneae Ch-32T (96.1 %), sharing less than 96.0 % sequence similarity with all other members of the genus Paenibacillus. Chemotaxonomic analysis revealing menaquinone-7 (MK-7) as the major isoprenoid quinone, diphosphatidylglycerol, phosphatidylethanolamine and two unknown phosphoglycolipids as the major cellular polar lipids, a DNA G+C content of 47.0 mol%, and anteiso-C15 : 0 and C16 : 0 as the major fatty acids supported affiliation of the new isolate to the genus Paenibacillus. Based on these data, isolate XJ259T is considered to represent a novel species of the genus Paenibacillus, for which the name Paenibacillus algorifonticola sp. nov. is proposed. The type strain is XJ259T ( = CGMCC 1.10223T  = JCM 16598T).


2015 ◽  
Vol 65 (Pt_11) ◽  
pp. 3885-3893 ◽  
Author(s):  
Sandra Baumgardt ◽  
Igor Loncaric ◽  
Peter Kämpfer ◽  
Hans-Jürgen Busse

Two Gram-stain-positive bacterial isolates, strain 2385/12T and strain 2673/12T were isolated from a tapir and a dog's nose, respectively. The two strains were rod to coccoid-shaped, catalase-positive and oxidase-negative. The highest 16S rRNA gene sequence similarity identified Corynebacterium singulare CCUG 37330T (96.3 % similarity) as the nearest relative of strain 2385/12T and suggested the isolate represented a novel species. Corynebacterium humireducens DSM 45392T (98.7 % 16S rRNA gene sequence similarity) was identified as the nearest relative of strain 2673/12T. Results from DNA–DNA hybridization with the type strain of C. humireducens demonstrated that strain 2673/12T also represented a novel species. Strain 2385/12T showed a quinone system consisting predominantly of menaquinones MK-8(H2) and MK-9(H2) whereas strain 2673/12T contained only MK-8(H2) as predominant quinone. The polar lipid profiles of the two strains showed the major compounds phosphatidylglycerol, diphosphatidylglycerol and an unidentified glycolipid. Phosphatidylinositol was identified as another major lipid in 2673/12T whereas it was only found in moderate amounts in strain 2385/12T. Furthermore, moderate to minor amounts of phosphatidylinositol-mannoside, β-gentiobiosyl diacylglycerol and variable counts of several unidentified lipids were detected in the two strains. Both strains contained corynemycolic acids. The polyamine patterns were characterized by the major compound putrescine in strain 2385/12T and spermidine in strain 2673/12T. In the fatty acid profiles, predominantly C18 : 1ω9c and C16 : 0 were detected. The two strains are distinguishable from each other and the nearest related established species of the genus Corynebacterium phylogenetically and phenotypically. In conclusion, two novel species of the genus Corynebacterium are proposed, namely Corynebacterium tapiri sp. nov. (type strain, 2385/12T = CCUG 65456T = LMG 28165T) and Corynebacterium nasicanis sp. nov. (type strain, 2673/12T = CCUG 65455T = LMG 28166T).


2007 ◽  
Vol 57 (8) ◽  
pp. 1834-1839 ◽  
Author(s):  
Min-Ho Yoon ◽  
Wan-Taek Im

Two strains (Gsoil 492T and Gsoil 643T) isolated in Pocheon Province, South Korea, from soil used for ginseng cultivation were characterized using a polyphasic approach. Both isolates comprised Gram-negative, aerobic, non-motile, rod-shaped bacteria. They had similar chemotaxonomic characteristics, e.g. containing MK-7 as the major quinone, having a DNA G+C content in the range 42.5–43.3 mol% and possessing iso-C15 : 0 and iso-C17 : 0 3-OH as the major fatty acids. A phylogenetic analysis based on 16S rRNA gene sequences indicated that the two isolates formed a tight cluster with several uncultured bacterial clones and with the established genera Terrimonas, Niastella and Chitinophaga in the phylum Bacteroidetes but were clearly separate from these genera. The levels of 16S rRNA gene sequence similarity between the isolates and type strains of related genera ranged from 87.5 to 92.4 %. Furthermore, the results of physiological and biochemical tests allowed phenotypic differentiation of the isolates from phylogenetically closely related species with validly published names. The level of 16S rRNA gene sequence similarity between the two strains was 99.5 %, whereas the DNA–DNA relatedness value was 44 %, indicating that they represent separate species. On the basis of the polyphasic evidence, a novel genus, Flavisolibacter gen. nov., and two novel species, Flavisolibacter ginsengiterrae sp. nov. (type strain Gsoil 492T=KCTC 12656T=DSM 18136T) and Flavisolibacter ginsengisoli sp. nov. (type strain Gsoil 643T=KCTC 12657T=DSM 18119T), are proposed. Flavisolibacter ginsengiterrae is the type species of the genus.


2007 ◽  
Vol 57 (11) ◽  
pp. 2453-2457 ◽  
Author(s):  
S. Kalyan Chakravarthy ◽  
T. N. R. Srinivas ◽  
P. Anil Kumar ◽  
Ch. Sasikala ◽  
Ch. V. Ramana

Two Gram-negative, vibrioid, phototrophic, purple non-sulfur strains, JA131T and JA135T, were isolated from marine habitats. Strain JA131T is non-motile but strain JA135T is motile by means of a pair of monopolar flagella. Both strains have an obligate requirement for NaCl for growth. The intracellular photosynthetic membranes of the two novel strains are of the vesicular type. Bacteriochlorophyll a and probably rhodovibrine are present as photosynthetic pigments. Niacin, thiamine and p-aminobenzoic acid are required as growth factors for both novel strains. Based on 16S rRNA gene sequence analysis, morphological and physiological characteristics, strains JA131T and JA135T are significantly different from each other and from other species of the genus Roseospira and thus represent two novel species for which the names Roseospira visakhapatnamensis sp. nov. and Roseospira goensis sp. nov. are proposed, respectively. The type strain of Roseospira visakhapatnamensis sp. nov. is JA131T (=ATCC BAA-1365T=JCM 14190T) and the type strain of Roseospira goensis sp. nov. is JA135T (=ATCC BAA-1364T=JCM 14191T).


Sign in / Sign up

Export Citation Format

Share Document