scholarly journals Litoricola marina sp. nov.

2010 ◽  
Vol 60 (6) ◽  
pp. 1303-1306 ◽  
Author(s):  
Ahyoung Choi ◽  
Kiyoung Lee ◽  
Hyun-Myung Oh ◽  
Jing Feng ◽  
Jang-Cheon Cho
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Marine Bacterium ◽  
Novel Species ◽  
Bacterial Species ◽  
The Yellow Sea ◽  
Rrna Gene ◽  
Gene Sequence Analysis ◽  
Type Strains

A Gram-negative, non-pigmented, non-motile, chemoheterotrophic marine bacterium, designated strain IMCC2782T, was isolated from a surface seawater sample of the Yellow Sea, Korea. On the basis of 16S rRNA gene sequence analysis and phenotypic and genotypic characterization, strain IMCC2782T is shown to represent a novel species of the genus Litoricola. Strain IMCC2782T grew at 15–37 °C and tolerated 7.5 % NaCl. Based on 16S rRNA gene sequences, strain IMCC2782T was related most closely to the type strain of Litoricola lipolytica (97.1 % similarity) but showed less than 90 % similarity to the type strains of other bacterial species. The predominant fatty acids were mono-unsaturated C18 : 1 and C16 : 1. The G+C content of the DNA of strain IMCC2782T was 59.6 mol%. A low level of DNA–DNA relatedness (28.1 %) together with several phenotypic characteristics, including enzyme activities, served to differentiate strain IMCC2782T from the type strain of L. lipolytica. Therefore, strain IMCC2782T is considered to represent a novel species of the genus Litoricola, for which the name Litoricola marina sp. nov. is proposed. The type strain is IMCC2782T (=KCTC 22683T =NBRC 105824T).

scholarly journals Pseudoalteromonas caenipelagi sp. nov., isolated from a tidal flat

2020 ◽  
Vol 70 (12) ◽  
pp. 6301-6306
Author(s):  
Sooyeon Park ◽  
Seo Yeon Lee ◽  
Wonyong Kim ◽  
Jung-Hoon Yoon
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Tidal Flat ◽  
Type Strain ◽  
Type Species ◽  
The Yellow Sea ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
Type Strains

A Gram-stain-negative, aerobic, non-spore-forming, motile by single polar flagellum and ovoid or rod-shaped bacterial strain, designated JBTF-M23T, was isolated from tidal flat sediment collected from the Yellow Sea, Republic of Korea. Neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain JBTF-M23T fell within the clade comprising the type strains of Pseudoalteromonas species, clustering with the type strains of P. byunsanensis and P. amylolytica . Strain JBTF-M23T exhibited the highest 16S rRNA gene sequence similarity value (98.6 %) to the type strain of P. rubra and sequence similarities of 98.3 and 97.7 % to the type strains of P. byunsanensis and P. amylolytica, respectively. The DNA G+C content of strain JBTF-M23T from genomic sequence data was 41.98 %. The ANI and dDDH values between strain JBTF-M23T and the type strains of P. rubra , P. byunsanensis and P. amylolytica were 71.3–76.6 and 19.4–19.9 %, respectively. Strain JBTF-M23T contained Q-8 as the predominant ubiquinone and C16 : 1  ω7c and/or C16 : 1  ω6c, C16 : 0 and C18 : 1  ω7c as the major fatty acids. The major polar lipids of strain JBTF-M23T were phosphatidylethanolamine and one unidentified aminolipid. Distinguished phenotypic properties, along with the phylogenetic and genetic distinctiveness, revealed that strain JBTF-M23T is separated from recognized Pseudoalteromonas species. On the basis of the data presented, strain JBTF-M23Tis considered to represent a novel species of the genus Pseudoalteromonas , for which the name Pseudoalteromonas caenipelagi sp. nov. is proposed. The type strain is JBTF-M23T(=KACC 19900T=NBRC 113647T).

scholarly journals Nocardia shimofusensis sp. nov., isolated from soil, and Nocardia higoensis sp. nov., isolated from a patient with lung nocardiosis in Japan

2004 ◽  
Vol 54 (6) ◽  
pp. 1927-1931 ◽  
Author(s):  
Akiko Kageyama ◽  
Katsukiyo Yazawa ◽  
Akira Mukai ◽  
Mari Kinoshita ◽  
Nobukatsu Takata ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Novel Species ◽  
Sequence Similarity ◽  
Taxonomic Status ◽  
Rrna Gene ◽  
Gene Sequence Analysis ◽  
Morphological Criteria ◽  
Respective Type ◽  
Type Strains

Three actinomycete strains isolated from soils and one strain isolated from a patient with lung nocardiosis in 1999 and 2001 in Japan have been provisionally assigned to the genus Nocardia on the basis of morphological criteria. These isolates were further investigated to determine their specific taxonomic status. Detailed chemotaxonomic characterization and 16S rRNA gene sequence analysis of these isolates confirmed that they belong to the genus Nocardia. The 16S rRNA gene sequences of the four strains were most similar to that of Nocardia farcinica. However, the sequence similarity values between these four strains and N. farcinica were <98·9 %. These four strains were susceptible to 5-fluorouracil, and they have the ability to decompose urea, which is a very characteristic trait. Furthermore, DNA–DNA relatedness data revealed that IFM 10311T, IFM 10312 and IFM 10313 comprise a single novel species of Nocardia, that IFM 10084T represents another novel species of Nocardia and that these two novel species could be distinguished from N. farcinica. The names Nocardia shimofusensis sp. nov. and Nocardia higoensis sp. nov. are proposed, with IFM 10311T (=NBRC 100134T=JCM 12122T=DSM 44733T) and IFM 10084T (=NBRC 100133T=JCM 12121T=DSM 44732T) as the respective type strains.

scholarly journals Adhaeribacter aerophilus sp. nov., Adhaeribacter aerolatus sp. nov. and Segetibacter aerophilus sp. nov., isolated from air samples

2010 ◽  
Vol 60 (10) ◽  
pp. 2424-2429 ◽  
Author(s):  
Hang-Yeon Weon ◽  
Soon-Wo Kwon ◽  
Jung-A Son ◽  
Soo-Jin Kim ◽  
Yi-Seul Kim ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Novel Species ◽  
Fatty Acid Content ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Air Samples ◽  
Type Strains ◽  
Sequence Similarities

Three bacterial isolates from air samples in Korea, designated strains 6424S-25T, 6515J-31T and 6424S-61T, were characterized using a polyphasic approach. The cells were strictly aerobic, Gram-stain-negative, non-motile, non-spore-forming and rod-shaped. Phylogenetic analysis of their 16S rRNA gene sequences revealed a clear affiliation with the phylum Bacteroidetes. Strains 6424S-25T and 6515J-31T showed 16S rRNA gene sequence similarities of 92.7–94.8 % to type strains of recognized species of the genus Adhaeribacter and strain 6424S-61T was closely related to Segetibacter koreensis Gsoil 664T (93.9 % similarity). The G+C contents of the DNA of strains 6424S-25T, 6515J-31T and 6424S-61T were 44.5, 43.9 and 38.4 mol%, respectively. Major fatty acids of strains 6424S-25T and 6515J-31T were summed feature 4 (iso-C17 : 1 I and/or anteiso-C17 : 1 B), iso-C15 : 0 and C16 : 1 ω5c. The fatty acid content of strain 6424S-61T mainly comprised iso-C15 : 1 G and iso-C15 : 0. Comparative analysis of phenotypic and phylogenetic traits indicated that strains 6424S-25T and 6515J-31T represented two novel species of the genus Adhaeribacter and that strain 6424S-61T should be considered as a novel species of the genus Segetibacter. The names Adhaeribacter aerophilus sp. nov. (type strain 6424S-25T =KACC 14118T =NBRC 106134T), Adhaeribacter aerolatus sp. nov. (type strain 6515J-31T =KACC 14117T =NBRC 106133T) and Segetibacter aerophilus sp. nov. (type strain 6424S-61T =KACC 14119T =NBRC 106135T) are proposed for these organisms.

scholarly journals Alistipes indistinctus sp. nov. and Odoribacter laneus sp. nov., common members of the human intestinal microbiota isolated from faeces

2010 ◽  
Vol 60 (6) ◽  
pp. 1296-1302 ◽  
Author(s):  
Fumiko Nagai ◽  
Masami Morotomi ◽  
Yohei Watanabe ◽  
Hiroshi Sakon ◽  
Ryuichiro Tanaka
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Gene Sequence ◽  
Novel Species ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
The Family ◽  
End Products ◽  
Type Strains

Two anaerobic, non-spore-forming, non-motile, Gram-negative-staining bacteria, strains YIT 12060T and YIT 12061T, were isolated from human faeces. Cells of strain YIT 12060T were coccoid to rod-shaped with round ends, positive for catalase, negative for indole and oxidase production, produced succinic and acetic acids as end products of glucose metabolism in peptone/yeast extract/glucose medium and had a DNA G+C content of 55.2 mol%. The main respiratory quinones were MK-10 (40 %) and MK-11 (57 %). Fatty acid analysis demonstrated the presence of a high concentration of iso-C15 : 0 (56 %). Following 16S rRNA gene sequence analysis, this strain was found to be most closely related to species of the genus Alistipes, with 90.9–92.6 % gene sequence similarities to type strains of this species. Phylogenetic analysis and biochemical data supported the affiliation of strain YIT 12060T to the genus Alistipes of the family ‘Rikenellaceae’. Strain YIT 12060T therefore represents a novel species of the genus Alistipes for which the name Alistipes indistinctus sp. nov. is proposed; the type strain is YIT 12060T (=DSM 22520T=JCM 16068T). Cells of the other isolate, strain YIT 12061T, were pleomorphic rods that were asaccharolytic, catalase- and oxidase-negative, positive for gelatin hydrolysis and indole production, produced small amounts of succinic, acetic and iso-valeric acids as end products of metabolism in peptone/yeast extract medium and had a DNA G+C content of approximately 42.4 mol%. On the basis of 16S rRNA gene sequence similarity values, this strain was shown to belong to the family ‘Porphyromonadaceae’ and related to the type strains of Odoribacter splanchnicus (89.6 %) and Odoribacter denticanis (86.2 %); similarity values with strains of recognized species within the family ‘Porphyromonadaceae’ were less than 84 %. Biochemical data supported the affiliation of strain YIT 12061T to the genus Odoribacter. Strain YIT 12061T therefore represents a novel species for which the name Odoribacter laneus sp. nov. is proposed; the type strain is YIT 12061T (=DSM 22474T=JCM 16069T).

scholarly journals Paenibacillus wooponensis sp. nov., isolated from wetland freshwater

2011 ◽  
Vol 61 (11) ◽  
pp. 2763-2768 ◽  
Author(s):  
Keun Sik Baik ◽  
Han Na Choe ◽  
Seong Chan Park ◽  
Eun Mi Kim ◽  
Chi Nam Seong
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Novel Species ◽  
Diaminopimelic Acid ◽  
Rrna Gene ◽  
The Novel ◽  
Phenotypic Characteristics ◽  
Gene Sequence Analysis ◽  
Diamino Acid ◽  
Type Strains

A rod-shaped, endospore-forming, Gram-reaction-positive bacterium, designated strain WPCB018T, was isolated from a fresh water sample collected from Woopo wetland, Korea. The isolate was identified as a member of the genus Paenibacillus on the basis of phenotypic characteristics and phylogenetic inference based on 16S rRNA gene sequence analysis. The major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine and unknown aminophospholipids. The diamino acid found in the cell-wall peptidoglycan was meso-diaminopimelic acid. The predominant menaquinone was MK-7. The major cellular fatty acids were anteiso-C15 : 0 (32.2 %), C16 : 0 (20.1 %) and C18 : 0 (18.1 %). The DNA G+C content was 56.0 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain WPCB018T belongs to a cluster comprising species of the genus Paenibacillus, its closest neighbours being Paenibacillus humicus PC-147T (97.5 %) and Paenibcillus pasadenensis SAFN-007T (96.2 %). Genomic DNA–DNA hybridizations performed with strain WPCB018T and type strains of the species P. humicus, P. pinihumi, P. phyllosphaerae, P. pasadenensis and P. tarimensis showed relatedness values of only 10, 17, 18, 19 and 20 %, respectively. On the basis of phenotypic, molecular and genetic evidence, strain WPCB018T represents a novel species of the genus Paenibacillus, for which the name Paenibacillus wooponensis sp. nov. is proposed. The type strain of the novel species is WPCB018T ( = KCTC 13280T  = JCM 16350T).

scholarly journals Transfer of Bacillus halodenitrificans Denariaz et al. 1989 to the genus Virgibacillus as Virgibacillus halodenitrificans comb. nov.

2004 ◽  
Vol 54 (6) ◽  
pp. 2163-2167 ◽  
Author(s):  
Jung-Hoon Yoon ◽  
Tae-Kwang Oh ◽  
Yong-Ha Park
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
The Yellow Sea ◽  
Rrna Gene ◽  
Dna Relatedness ◽  
Gene Similarity ◽  
Type Strains

A Gram-variable, endospore-forming moderately halophilic rod, strain SF-121, was isolated from a marine solar saltern of the Yellow Sea in Korea. The result of 16S rRNA gene sequence analysis showed that strain SF-121 has highest sequence similarity (99·7 %) with the type strain of Bacillus halodenitrificans. Phylogenetic analyses based on 16S rRNA gene sequences revealed that B. halodenitrificans DSM 10037T and strain SF-121 are more closely related to the genus Virgibacillus than to the genus Bacillus. Strain SF-121 and B. halodenitrificans DSM 10037T exhibited 16S rRNA gene similarity levels of 95·3–97·5 % with the type strains of Virgibacillus species and 94·0 % with the type strain of Bacillus subtilis. DNA–DNA relatedness and phenotypic data indicated that B. halodenitrificans DSM 10037T and strain SF-121 are members of the same species. B. halodenitrificans DSM 10037T and strain SF-121 exhibited DNA–DNA relatedness values of 9–11 % with the type strains of Virgibacillus carmonensis and Virgibacillus marismortui. On the basis of the phenotypic, chemotaxonomic, phylogenetic and genetic data, B. halodenitrificans should be reclassified in the genus Virgibacillus as Virgibacillus halodenitrificans comb. nov.

scholarly journals Jeotgalibacillus salarius sp. nov., isolated from a marine saltern, and reclassification of Marinibacillus marinus and Marinibacillus campisalis as Jeotgalibacillus marinus comb. nov. and Jeotgalibacillus campisalis comb. nov., respectively

2010 ◽  
Vol 60 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Jung-Hoon Yoon ◽  
So-Jung Kang ◽  
Peter Schumann ◽  
Tae-Kwang Oh
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Sequence Similarity ◽  
The Yellow Sea ◽  
Rrna Gene ◽  
16S Rrna Gene Sequences ◽  
Phenotypic Properties ◽  
Diamino Acid ◽  
Type Strains

A Gram-variable, motile and rod-shaped bacterial strain, ASL-1T, was isolated from a marine saltern located on the coast of the Yellow Sea, Korea. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences showed that strain ASL-1T clustered with Jeotgalibacillus alimentarius YKJ-13T and that this cluster joined the clade comprising the type strains of two Marinibacillus species. Strain ASL-1T exhibited 16S rRNA gene sequence similarity values of 97.3 % to J. alimentarius YKJ-13T and 96.5 % to the type strains of Marinibacillus marinus and Marinibacillus campisalis. The chemotaxonomic properties of strain ASL-1T were similar to those of one or two of the genera Jeotgalibacillus and Marinibacillus. The peptidoglycan type was A1α linked directly through l-lysine as the diamino acid. Strain ASL-1T contained MK-7 as the predominant menaquinone with the presence of a significant amount of MK-8. The predominant fatty acid was anteiso-C15 : 0. The DNA G+C content was 42.9 mol%. Differential phenotypic properties, together with the phylogenetic and genetic distinctiveness, revealed that strain ASL-1T could be differentiated from J. alimentarius and the two Marinibacillus species. On the basis of the data presented, strain ASL-1T represents a novel species within the genus Jeotgalibacillus, for which the name Jeotgalibacillus salarius sp. nov. is proposed. The type strain is ASL-1T (=KCTC 13257T=CCUG 56751T). It is also proposed that Marinibacillus marinus and Marinibacillus campisalis be reclassified as Jeotgalibacillus marinus comb. nov. (type strain 581T=DSM 1297T=ATCC 29841T=CCUG 28884T=CIP 103308T=LMG 6930T) and Jeotgalibacillus campisalis comb. nov. (type strain SF-57T=KCCM 41644T=JCM 11810T), respectively.

Nocardia amikacinitolerans sp. nov., an amikacin-resistant human pathogen

2013 ◽  
Vol 63 (Pt_3) ◽  
pp. 1056-1061 ◽  
Author(s):  
Ifeoma Ezeoke ◽  
Hans-Peter Klenk ◽  
Gabriele Pötter ◽  
Peter Schumann ◽  
Ben D. Moser ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Species ◽  
Gene Sequence ◽  
Novel Species ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
Gene Sequence Analysis ◽  
Type Strains

Five nocardioform isolates from human clinical sources were evaluated. Analysis of the nearly full-length 16S rRNA gene showed 99.9–100 % similarity among the strains. The results of a comparative phylogenetic analysis of the 16S rRNA gene sequences indicated that the isolates belonged to the genus Nocardia . Phenotypic and molecular analyses were performed on the clinical isolates. Traditional phenotypic analyses included morphological, biochemical/physiological, chemotaxonomic and antimicrobial susceptibility profiling. Molecular studies included 1441-bp 16S rRNA and 1246-bp gyrB gene sequence analyses, as well as DNA–DNA hybridizations. Biochemical analysis failed to differentiate the putative novel species from its phylogenetic neighbours; however, molecular studies were able to distinguish the patient strains and confirm them as members of a single species. Based on 16S rRNA gene sequence analysis, similarity between the isolates and their closest relatives (type strains of Nocardia araoensis , N. arthritidis , N. beijingensis and N. niwae ) was ≤99.3 %. Analysis of partial gyrB gene sequences showed 98–99.7 % relatedness among the isolates. Nocardia lijiangensis and N. xishanensis were the closest related species to the isolates based on gyrB gene sequence analysis, and their type strains showed 95.7 and 95.3 % similarity, respectively, to strain W9988T. Resistance to amikacin and molecular analyses, including DNA–DNA hybridization, distinguished the five patient strains from their phylogenetic neighbours, and the results of this polyphasic study indicated the existence of a novel species of Nocardia , for which we propose the name Nocardia amikacinitolerans sp. nov., with strain W9988T ( = DSM 45539T  = CCUG 59655T) as the type strain.

scholarly journals Dactylosporangium luridum sp. nov., Dactylosporangium luteum sp. nov. and Dactylosporangium salmoneum sp. nov., nom. rev., isolated from soil

2010 ◽  
Vol 60 (8) ◽  
pp. 1813-1823 ◽  
Author(s):  
Byung-Yong Kim ◽  
James E. M. Stach ◽  
Hang-Yeon Weon ◽  
Soon-Wo Kwon ◽  
Michael Goodfellow
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Morphological Properties ◽  
Rrna Gene ◽  
16S Rrna Gene Sequences ◽  
Phenotypic Properties ◽  
Phenotypic Data ◽  
Gene Sequence Analysis ◽  
Type Strains

Forty strains isolated from soil taken from a hay meadow were assigned to the genus Dactylosporangium on the basis of colonial properties. 16S rRNA gene sequence analysis showed that the isolates formed a group that was most closely related to the type strain of Dactylosporangium aurantiacum, but well separated from other Dactylosporangium type strains and from ‘Dactylosporangium salmoneum’ NRRL B-16294. Twelve of 13 representative isolates had identical 16S rRNA gene sequences and formed a subclade that was distinct from corresponding phyletic lines composed of the remaining isolate, strain BK63T, the ‘D. salmoneum’ strain and the type strains of recognized Dactylosporangium species. DNA–DNA relatedness data indicated that representatives of the multi-membered 16S rRNA gene subclade, isolate BK63T and the ‘D. salmoneum’ subclade formed distinct genomic species; all of these organisms had chemotaxonomic and morphological properties consistent with their classification in the genus Dactylosporangium. They were also distinguished from one another and from the type strains of recognized Dactylosporangium species based on a range of phenotypic properties. Combined genotypic and phenotypic data showed that isolate BK63T, isolates BK51T, BK53 and BK69, and strain NRRL B-16294T should be classified in the genus Dactylosporangium as representing novel species. The names proposed for these species are Dactylosporangium luridum sp. nov. (type strain BK63T  = DSM 45324T  = KACC 20933T  = NRRL B-24775T), Dactylosporangium luteum sp. nov. (type strain BK51T  = DSM 45323T  = KACC 20899T  = NRRL B-24774T) and Dactylosporangium salmoneum sp. nov., nom. rev. (type strain NRRL B-16294T  = ATCC 31222T  = DSM 43910T  = JCM 3272T  = NBRC 14103T).

scholarly journals Reclassification of Gluconacetobacter hansenii strains and proposals of Gluconacetobacter saccharivorans sp. nov. and Gluconacetobacter nataicola sp. nov.

2006 ◽  
Vol 56 (9) ◽  
pp. 2101-2111 ◽  
Author(s):  
Puspita Lisdiyanti ◽  
Richard R. Navarro ◽  
Tai Uchimura ◽  
Kazuo Komagata
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Novel Species ◽  
Rrna Gene ◽  
Dna Base Composition ◽  
Gluconacetobacter Hansenii ◽  
Group I ◽  
Similarity Group ◽  
Type Strains

Ten strains previously assigned to Acetobacter hansenii (=Gluconacetobacter hansenii), Acetobacter pasteurianus LMG 1584 and eight reference strains of the genus Gluconacetobacter were reclassified by 16S rRNA gene sequencing, DNA–DNA similarity, DNA base composition and phenotypic characteristics. The A. hansenii strains and A. pasteurianus LMG 1584 were included in the cluster of acetic acid bacteria (family Acetobacteraceae) by 16S rRNA gene sequences. Further, they were separated into seven distinct groups by DNA–DNA similarity. DNA–DNA similarity group I was identified as G. hansenii. DNA–DNA similarity group II was retained as Gluconacetobacter sp., because DNA–DNA similarity between the strain and Gluconacetobacter entanii LTH 4560T could not be determined. This was due to a lack of availability of the type strain from any source. DNA–DNA similarity group III was regarded as a novel species, for which the name Gluconacetobacter saccharivorans sp. nov. (type strain, LMG 1582T=NRIC 0614T) is proposed. DNA–DNA similarity group IV included the type strains of Gluconacetobacter oboediens and Gluconacetobacter intermedius, and three A. hansenii strains. This group was identified as G. oboediens because high values of DNA–DNA similarity were obtained between the type strains and G. oboediens has priority over G. intermedius. DNA–DNA similarity group V was identified as Gluconacetobacter europaeus. DNA–DNA similarity group VI was regarded as a novel species, for which the name Gluconacetobacter nataicola sp. nov. (type strain, LMG 1536T=NRIC 0616T) is proposed. DNA–DNA similarity group VII was reclassified as Gluconacetobacter xylinus. The description of G. hansenii is emended.

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