TL;DR: Phenotypic and phylogenetic characteristics suggest that strain AMV1(T) is a representative of a novel species of a new genus, for which the name Lutibaculum baratangense gen. nov. is proposed.
Abstract: A novel Gram-negative, oval to rod-shaped, motile bacterium, strain AMV1T, was isolated from a soil sample collected from a mud volcano of Baratang Island, Andamans, India. The predominant fatty acids were C16 : 0 (5.7 %), C18 : 1ω7c (78.6 %) and C19 : 0 cyclo ω8c (6.3 %). Strain AMV1T contained ubiquinone 10 (Q-10) as the major respiratory quinone and minor quantities of ubiquinone 9 (Q-9). The polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, three unidentified lipids, one unidentified phospholipid and one unidentified aminolipid. 16S rRNA gene sequence analysis indicated that strain AMV1T was related most closely to the type strains of
Tepidamorphus gemmatus
,
Bauldia consociata
,
Afifella pfennigii
and
Amorphus coralli
, four members of the order
Rhizobiales
(class
Alphaproteobacteria
), with pairwise sequence similarities of 95.0, 94.5, 94.4 and 94.0 %, respectively; it shared <94 % 16S rRNA gene sequence similarity with all the other members of the order
Rhizobiales
. Phylogenetic analyses indicated that strain AMV1T clustered with
Tepidamorphus gemmatus
and with species of the genera
Amorphus
,
Rhodobium
and
Afifella
. Phenotypic and phylogenetic characteristics thus suggest that strain AMV1T is a representative of a novel species of a new genus, for which the name Lutibaculum baratangense gen. nov., sp. nov. is proposed. The type strain of Lutibaculum baratangense is AMV1T ( = KCTC 22669T = NBRC 105799T = CCUG 58046T).
TL;DR: DNA-DNA hybridization between strain YIM D10T and the type strain of the only recognized species of the genus Amorphus, A. coralli RS.Sph.026T, was 16.7%, showing clearly that the isolate constitutes a new genospecies.
Abstract: A Gram-negative, moderately halophilic, non-motile, aerobic bacterium, designated strain YIM D10T, was isolated from a salt mine sediment sample from Yunnan, south-west China. The strain grew optimally in the presence of 3–8 % NaCl and at 28 °C and pH 7.5. The polar lipid profile of strain YIM D10T comprised diphosphatidylglycerol, an unknown phospholipid and two unknown aminolipids. The major cellular fatty acids were C18 : 1
ω7c (30.5 %), C19 : 0 cyclo ω8c (29.3 %) and C18 : 0 (13.2 %). The respiratory quinone was ubiquinone 10 (Q-10). The genomic DNA G+C content was 65.4 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM D10T was closely related to Amorphus coralli RS.Sph.026T (96.8 % gene sequence similarity). Results confirmed the placement of isolate YIM D10T within the genus Amorphus. However, DNA–DNA hybridization between strain YIM D10T and the type strain of the only recognized species of the genus Amorphus, A. coralli RS.Sph.026T, was 16.7 %, showing clearly that the isolate constitutes a new genospecies. Strain YIM D10T could be clearly differentiated from A. coralli and other phylogenetic neighbours on the basis of some phenotypic, genotypic and chemotaxonomic features. Therefore, strain YIM D10T is considered to represent a novel species of the genus Amorphus, for which the name Amorphus orientalis sp. nov. is proposed; the type strain is YIM D10T (=DSM 21202T=CCTCC AA 208035T).
TL;DR: On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain YC6899(T) represents a novel species within the genus amorphus, for which the name Amorphus suaedae sp.
Abstract: A novel bacterial strain, YC6899T, was isolated from the root of Suaedae maritima growing on a tidal flat of Namhae Island, Korea. Cells were Gram-reaction-negative, rod-shaped, non-motile, slightly halophilic and heterotrophic. Strain YC6899T grew optimally at a salinity of 2–4 %, at 25–37 °C and at pH 6.5–8.0. Phylogenetic analysis of 16S rRNA gene sequences demonstrated that strain YC6899T was closely related to
Amorphus orientalis
YIM D10T (96.1 % similarity) and
Amorphus coralli
RS.Sph.026T (95.9 %). The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, unknown aminolipids, an unknown aminophospholipid, an unknown aminoglycolipid, unknown glycolipids and unknown lipids. The major fatty acids of strain YC6899T were C19 : 0 cyclo ω8c and C18 : 1ω7c. The G+C content of the genomic DNA was 61.3 mol%. Strain YC6899T contained ubiquinone-10 (Q-10) as the major respiratory quinone system. On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain YC6899T represents a novel species within the genus
Amorphus
, for which the name Amorphus suaedae sp. nov. is proposed. The type strain is YC6899T ( = KACC 14912T = NBRC 107845T).
TL;DR: Phenotypic and phylogenetic characteristics suggested that strain AMV1T is a representative of a novel genus and a new species, Lutibaculum baratangense gen. nov., sp.
Abstract: A novel Gram-negative, oval to rod shaped, motile bacterium, strain AMV1T, was isolated from a soil sample collected from a mud volcano, Baratang Island, Andamans, India. The fatty acids were dominated by unsaturated fatty acids (82.6 %), with a high presence of C18:1 ω7c (78.6 %). Strain AMV1T contained ubiquinone (Q9) and menaquinone (MK-4 and MK-8) as the respiratory quinones. The polar lipids consisted of four unknown aminolipids, two unknown glycoaminolipids and two unknown phospholipids. The 16S rRNA gene sequence analysis indicated that Amorphus coralli, Phyllobacterium myrsinacearum and Bauldia consociatum, three members of the order Rhizobiales (phylum Alphaproteobacteria) are the closest related species with pairwise sequence similarities of 94.0,94.0 and 94.5, % respectively and <94% with all the other members of the order Rhizobiales. Phylogenetic analyses indicated that strain AMV1T clustered with Amorphus coralli and branched separately from the members of the family Rhodobiaceae. Phenotypic and phylogenetic characteristics suggested that strain AMV1T is a representative of a novel genus and a new species, Lutibaculum baratangense gen. nov., sp. nov. The type strain is AMV1T (= KCTC 22669T = NBRC 105799T = CCUG 58046T).
TL;DR: On the basis of its phenotypic properties and phylogenetic distinctiveness, strain RS.Sph.026(T) represents a novel genus and species in the order Rhizobiales, for which the name Amorphus coralli gen. nov. is proposed.
Abstract: A bacterial strain, designated RS.Sph.026T, was isolated from mucus of the coral Fungia granulosa collected from the northern Red Sea (Gulf of Eilat, Israel). The bacterium was found to be Gram-negative, non-motile, halotolerant and heterotrophic. Comparative 16S rRNA gene sequence analyses showed that strain RS.Sph.026T belonged to the order Rhizobiales, with the highest levels of 16S RNA gene sequence similarity with Rhodobium orientis (92 %). Strain RS.Sph.026T grew optimally at a salinity of 3–4 %, pH 7.5–8 and 25–30 °C. The major cellular fatty acids were cis-7-octadecenoic acid (C18 : 1
ω7с; 57.2 %) and C19 : 0 cyclo ω8с (15.5 %). The DNA G+C content of strain RS.Sph.026T was 67.1 mol%. On the basis of its phenotypic properties and phylogenetic distinctiveness, strain RS.Sph.026T represents a novel genus and species in the order Rhizobiales, for which the name Amorphus coralli gen. nov., sp. nov. is proposed. The type strain is RS.Sph.026T (=LMG 24307T=DSM 19760T).