Paucisalibacillus globulus gen. nov., sp. nov., a Gram-positive bacterium isolated from potting soil.
A Gram-positive bacterium, designated B22(T), was isolated from potting soil produced in Portugal. This organism is a catalase-positive, oxidase-negative, motile, spore-forming, aerobic rod that grows optimally at 37 degrees C and pH 8.0-8.5. Optimal growth occurs in media containing 1 % (w/v) NaCl, although the organism can grow in 0-8 % NaCl. The cell wall peptidoglycan is of the A4alpha type with a cross-linkage containing d-Asp. The major respiratory quinone is menaquinone 7 and the major fatty acids are anteiso-15 : 0, anteiso-17 : 0 and iso-15 : 0. The DNA G+C content is 37.9 mol%. Phylogenetic analysis of 16S rRNA gene sequences revealed that strain B22(T) formed a new branch within the family Bacillaceae. The novel isolate is phylogenetically closely related to members of genera of moderately halophilic bacilli and formed a coherent cluster with species of the genera Salinibacillus, Virgibacillus, Oceanobacillus and Lentibacillus, supported by bootstrap analysis at a confidence level of 71 %. Strain B22(T) exhibited 16S rRNA gene pairwise sequence similarity values of 94.7-94.3 % with members of the genus Salinibacillus, 95.1-92.8 % with members of the genus Virgibacillus, 94.7-93.2 % with members of the genus Oceanobacillus and 93.1-92.3 % with members of the genus Lentibacillus. On the basis of phylogenetic analysis and physiological and biochemical characteristics, it is proposed that strain B22(T) represents a novel species in a new genus, Paucisalibacillus globulus gen. nov., sp. nov. Strain B22(T) (=LMG 23148(T)=CIP 108857(T)) is the type strain of Paucisalibacillus globulus.
Nunes
Inês
I
Departamento de Zoologia and Centro de Neurociências de Biologia Celular, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
Tiago
Igor
I
Departamento de Zoologia and Centro de Neurociências de Biologia Celular, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
Pires
Ana Luísa
AL
Departamento de Zoologia and Centro de Neurociências de Biologia Celular, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
da Costa
Milton S
MS
Departamento de Bioquímica and Centro de Neurociências de Biologia Celular, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
Veríssimo
António
A
Departamento de Zoologia and Centro de Neurociências de Biologia Celular, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
D001406:Bacillaceae / Q000737:chemistry / Q000145:classification* / Q000302:isolation & purification / Q000502:physiology; D001483:Base Sequence; D003470:Culture Media; D005227:Fatty Acids / Q000032:analysis; D008969:Molecular Sequence Data; D010457:Peptidoglycan / Q000032:analysis; D010802:Phylogeny; D011174:Portugal; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012689:Sequence Homology, Nucleic Acid; D012965:Sodium Chloride; D012988:Soil Microbiology; D013171:Spores, Bacterial; D024482:Vitamin K 2 / Q000032:analysis
D003470:Culture Media; D005227:Fatty Acids; D010457:Peptidoglycan; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; D012965:Sodium Chloride