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1.
Artigo em Inglês | MEDLINE | ID: mdl-35138243

RESUMO

Five Gram-stain-positive strains (M1-10T, M1-13, M1-21T, M2-14T and S1-1T) were isolated from paper mulberry (Broussonetia papyrifera) in Taiwan. Cells were rod-shaped, non-motile, non-haemolytic, asporogenous, facultatively anaerobic, heterofermentative, and did not exhibit catalase and oxidase activities. Phylogenetic analysis of the 16S rRNA gene sequences revealed that these novel strains belonged to the genus Fructobacillus. On the basis of 16S rRNA gene sequence similarities, the type strains of Fructobacillus fructosus and Fructobacillus durionis were the closest neighbours to strains M1-10T, M1-13, M1-21T, M2-14T and S1-1T. Sequence analyses of concatenated two partial housekeeping genes, the RNA polymerase beta subunit (rpoC) and recombinase A (recA) also indicated that the novel strains belonged to the genus Fructobacillus. The 16S rRNA and concatenated rpoC and recA gene sequence similarities between strains M1-10T and M1-13 were 100 %, respectively. The average nucleotide identity values of M1-10T, M1-21T, M2-14T and S1-1T with F. fructosus and F. durionis were 75.1-78.9% and 76.5-77.5 %, respectively. The digital DNA-DNA hybridization values were 19.7-21.5% and 19.6-20.4 %, respectively. Phenotypic and genotypic test results demonstrated that these strains represent four novel species of the genus Fructobacillus, for which the names Fructobacillus papyriferae sp. nov., Fructobacillus papyrifericola sp. nov., Fructobacillus broussonetiae sp. nov. and Fructobacillus parabroussonetiae sp. nov. are proposed with the type strains M1-10T (=BCRC 81237T=NBRC 114433T), M1-21T (=BCRC 81239T=NBRC 114435T), M2-14T (=BCRC 81240T=NBRC 114436T) and S1-1T (=BCRC 81241T=NBRC 114437T), respectively.


Assuntos
Broussonetia , Lactobacillaceae/classificação , Filogenia , Técnicas de Tipagem Bacteriana , Composição de Bases , Broussonetia/microbiologia , DNA Bacteriano/genética , Ácidos Graxos/química , Lactobacillaceae/isolamento & purificação , Hibridização de Ácido Nucleico , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Taiwan
2.
Int J Syst Evol Microbiol ; 70(3): 1578-1584, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32228749

RESUMO

A Gram-stain-positive strain, 8 H-2T, was isolated from faeces of Reeves' muntjac (Muntiacus reevesi) barking deer in Taiwan. Cells of the strain were short rod-shaped, non-motile, non-haemolytic, asporogenous, facultatively anaerobic, heterofermentative and did not exhibit catalase and oxidase activities. Comparative analyses of 16S rRNA, pheS and dnaA gene sequences demonstrated that the novel strain was a member of the genus Weissella. On the basis of 16S rRNA gene sequence similarities, the type strains of Weissella oryzae (99.2 %), Weissella confusa (97.8 %), Weissella cibaria (97.6 %) and Weissella soli (97.3 %) were the closest neighbours to strain 8 H-2T. The concatenated housekeeping gene sequence (pheS and dnaA) similarities of 8 H-2T to closely related type strains were 72.5-84.9 %, respectively. The genomic DNA G+C content was 40.5 mol%. The average nucleotide identity and digital DNA-DNA hybridization values with these type strains were 70.2-75.4% and 25.1-30.1 %, respectively. Phenotypic and genotypic test results demonstrated that strain 8 H-2T represents a novel species belonging to the genus Weissella, for which the name Weissella muntiaci sp. nov. is proposed. The type strain is 8 H-2T (=BCRC 81133T=NBRC 113537T).


Assuntos
Cervos/microbiologia , Fezes/microbiologia , Filogenia , Weissella/classificação , Animais , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Ácidos Graxos/química , Fermentação , Genes Bacterianos , Cervo Muntjac , Hibridização de Ácido Nucleico , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Taiwan , Weissella/isolamento & purificação
3.
Int J Syst Evol Microbiol ; 70(3): 1953-1960, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32003713

RESUMO

A Gram-stain-positive, coccus- or oval-shaped, non-motile, haemolytic, asporogenous, catalase- and oxidase-negative, and facultatively anaerobic strain, 2B-2T, was isolated from a brewer's grain used to make silage in Taiwan. Comparative analyses of 16S rRNA, hsp60 and pheS gene sequences demonstrated that strain 2B-2T was a member of the genus Vagococcus. On the basis of 16S rRNA gene sequence similarity, the type strains of Vagococcus teuberi (98.4 % similarity), Vagococcus carniphilus (98.4 %), Vagococcus martis (98.2 %), Vagococcus penaei (98.2 %) and Vagococcus fluvialis (98.0 %) were the closest neighbours to this novel strain. The similarity levels of concatenated housekeeping gene sequences (hsp60 and pheS) between strain 2B-2T and these closely related species ranged from 84.5 to 88.0 %. The average nucleotide identity and in silico DNA-DNA hybridization values between strain 2B-2T and its closest relatives were lower than 72.9 and 21.6 %, respectively. The DNA G+C content was 34.7 mol%. Phenotypic and genotypic features demonstrated that strain 2B-2T represents a novel species of the genus Vagococcus, for which the name Vagococcus silagei sp. nov. is proposed. The type strain is 2B-2T (=BCRC 81132T=NBRC 113536T).


Assuntos
Grão Comestível/microbiologia , Enterococcaceae/classificação , Filogenia , Silagem/microbiologia , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Enterococcaceae/isolamento & purificação , Ácidos Graxos/química , Genes Bacterianos , Hibridização de Ácido Nucleico , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Taiwan
4.
Int J Syst Evol Microbiol ; 68(8): 2424-2430, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29916796

RESUMO

A Gram-stain-positive strain, BS-W1T, was isolated from a traditional fermented ma bamboo shoots (Dendrocalamus latiflorus Munro) product of Taiwan. It was rod-shaped, non-motile, non-haemolytic, asporogenous, facultatively anaerobic, heterofermentative and did not exhibit catalase or oxidase activities. Comparative analysis of 16S rRNA, pheS, rpoA and gyrB gene sequences demonstrated that the novel strain BS-W1T was a member of the genus Lactobacillus. On the basis of 16S RNA gene sequence similarity, the type strains of Lactobacillus oryzae (94.4 % similarity), Lactobacillus acidifarinae (93.8 %), Lactobacillus namurensis (93.7 %) and Lactobacillus zymae (93.7 %) were the closest neighbours to strain BS-W1T. The pheS, rpoA and gyrB gene sequence similarities of strain BS-W1T to closely related these species were less than 80.2 %. DNA-DNA reassociation values with these type strains were 21.0-33.8 %. The DNA G+C content was 46.6 mol%. The average nucleotide identity values between BS-W1T and the closest relatives were lower than 70 %. Phenotypic and genotypic features demonstrated that the strain represents a novel species of the genus Lactobacillus, for which the name Lactobacillus bambusae sp. nov. is proposed. The type strain is BS-W1T (=BCRC 80970T=NBRC 112377T).


Assuntos
Alimentos Fermentados/microbiologia , Microbiologia de Alimentos , Lactobacillus/classificação , Verduras/microbiologia , Técnicas de Tipagem Bacteriana , Composição de Bases , DNA Bacteriano/genética , Fermentação , Genes Bacterianos , Lactobacillus/genética , Lactobacillus/isolamento & purificação , Hibridização de Ácido Nucleico , Filogenia , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Taiwan
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