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1.
J Microbiol ; 59(10): 898-910, 2021 Oct.
Article En | MEDLINE | ID: mdl-34491521

During a study of the marine actinobacterial biodiversity, a large number of Brevibacterium strains were isolated. Of these, five that have relatively low 16S rRNA gene similarity (98.5-99.3%) with validly published Brevibacterium species, were chosen to determine taxonomic positions. On the basis of 16S rRNA gene sequence analysis and BOX-PCR fingerprinting, strains o2T, YB235T, and WO024T were selected as representative strains. Genomic analyses, including average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH), clearly differentiated the three strains from each other and from their closest relatives, with values ranging from 82.8% to 91.5% for ANI and from 26.7% to 46.5% for dDDH that below the threshold for species delineation. Strains YB235T, WO024T, and o2T all exhibited strong and efficient decolorization activity in congo red (CR) dyes, moderate decolorization activity in toluidine blue (TB) dyes and poor decolorization in reactive blue (RB) dyes. Genes coding for peroxidases and laccases were identified and accounted for these strains' ability to effectively oxidize a variety of dyes with different chemical structures. Mining of the whole genome for secondary metabolite biosynthesis gene clusters revealed the presence of gene clusters encoding for bacteriocin, ectoine, NRPS, siderophore, T3PKS, terpene, and thiopeptide. Based on the phylogenetic, genotypic and phenotypic data, strains o2T, YB235T and WO024T clearly represent three novel taxa within the genus Brevibacterium, for which the names Brevibacterium limosum sp. nov. (type strain o2T = JCM 33844T = MCCC 1A09961T), Brevibacterium pigmenatum sp. nov. (type strain YB235T = JCM 33843T = MCCC 1A09842T) and Brevibacterium atlanticum sp. nov. (type strain WO024T = JCM 33846T = MCCC 1A16743T) are proposed.


Brevibacterium/isolation & purification , Brevibacterium/metabolism , Coloring Agents/metabolism , Geologic Sediments/microbiology , Bacterial Typing Techniques , Biodegradation, Environmental , Brevibacterium/classification , Brevibacterium/genetics , China , DNA, Bacterial/genetics , Fatty Acids/chemistry , Fatty Acids/metabolism , Oceans and Seas , Phylogeny , RNA, Ribosomal, 16S/genetics , Seawater/microbiology
2.
Arch Microbiol ; 203(5): 2291-2296, 2021 Jul.
Article En | MEDLINE | ID: mdl-33649904

Two bacterial strains, designated REN4T and REN4-1, were isolated from daqu sample collected from baijiu factory located in Shanxi, China. The two strains shared highly similar 16S rRNA gene sequences (99.67% identities) and formed a monophyletic clade within the Brevibacterium 16S rRNA gene tree, showing 97.56-97.85% 16S rRNA gene sequence identities with type strains Brevibacterium permense VKM Ac-2280 T, Brevibacterium sediminis FXJ8.269 T, Brevibacterium oceani BBH7T and Brevibacterium epidermidis NCIMB 702286 T. They contained MK-8(H2) as the most predominant menaquinone, antesio-C15:0, antesio-C17:0, Iso-C16:0 and Iso-C17:0 as the major cellular fatty acids, DPG (diphosphatidylglycerol), PG (phosphatidylglycerol), PGL (phosphatidylglycerollipids), and PL (phospholipids) as the main polar lipids. The genomic DNA G + C content of strains REN4 and REN4-1 were 64.35, 65.82 mol%. Moreover, the low DNA-DNA relatedness values, physiological and biochemical characteristics, and taxonomic analysis allowed the differentiation of strains REN4T and REN4-1 from the other recognized species of the genus Brevibacterium. Therefore, strain REN4T represents a novel species of the genus Brevibacterium, for which the name Brevibacterium renqingii sp. nov. is proposed, with the type strain REN4T (= JCM 33953 T = KCTC 49366 T).


Brevibacterium , Fermented Foods/microbiology , Bacterial Typing Techniques , Base Composition/genetics , Brevibacterium/classification , Brevibacterium/genetics , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , Diaminopimelic Acid/analysis , Fatty Acids/analysis , Fermentation , Nucleic Acid Hybridization , Phospholipids/analysis , Phylogeny , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA
3.
Int J Syst Evol Microbiol ; 70(11): 5818-5823, 2020 Nov.
Article En | MEDLINE | ID: mdl-32965208

A new Gram-stain-positive, aerobic, non-motile and rod-shaped actinobacterium, designated O1T, was isolated from a deep-sea sediment of the Western Pacific Ocean. Strain O1T showed optimal growth at 30 °C, between pH 6.0 and 8.0, and in the presence of 1-5 % (w/v) NaCl. The predominant menaquinone was MK-8 (H2), and anteiso-C15 : 0 and anteiso-C17 : 0 were the major fatty acids. The diagnostic diamino acid in the cell-wall peptidoglycan was meso-diaminopimelic acid. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and one unknown glycolipid. The DNA G+C content of strain O1T was 64.9 mol% and the genome size was 4.17 Mb. Based on a similarity search and phylogenetic analysis of the 16S rRNA gene sequence, strain O1T belonged to the genus Brevibacterium. The values of average nucleotide identity and in silico DNA-DNA hybridization between strain O1T and its close relatives were well below the thresholds used for the delineation of a new species. On the basis of the morphological and chemotaxonomic characteristics, as well as the genotypic data, it is proposed that strain O1T represents a novel species of the genus Brevibacterium, for which the name Brevibacterium profundi sp. nov. is proposed. The type strain is O1T (=JCM 33845T=MCCC 1A16744T).


Brevibacterium/classification , Geologic Sediments/microbiology , Phylogeny , Bacterial Typing Techniques , Base Composition , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , Diaminopimelic Acid/chemistry , Fatty Acids/chemistry , Genome Size , Nucleic Acid Hybridization , Pacific Ocean , Peptidoglycan/chemistry , Phospholipids/chemistry , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA , Vitamin K 2/analogs & derivatives , Vitamin K 2/chemistry
4.
Int J Syst Evol Microbiol ; 70(10): 5205-5210, 2020 Oct.
Article En | MEDLINE | ID: mdl-32816658

A Gram stain-positive, non-spore-forming, non-motile and rod-shaped actinomycete, strain 5221T, was isolated from the sediment of a river collected at Ronggui in the Pearl River Delta, PR China. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the strain formed a distinct lineage within the genus Brevibacterium and had the highest sequence similarity to Brevibacterium pityocampae Tp12T (96.7 %), followed by Brevibacterium daeguense 2C6-41T (96.5 %), Brevibacterium samyangense SST-8T (96.0 %) and Brevibacterium ravenspurgense 20T (95.9 %). The results of chemotaxonomic analyses, including detecting anteiso-C15 : 0, anteiso-C17 : 0, and C16 : 0 as the major cellular fatty acids, diphosphatidylglycerol, phosphatidylglycerol and three phosphoglycolipids as the polar lipids, MK-8(H2) as the major menaquinone, and a DNA G+C content of 72.4 mol%, supported that strain 5221T is a member of the genus Brevibacterium. Furthermore, low sequence similarities of 16S rRNA gene sequences, differences in fatty acid compositions and differential physiological characteristics such as enzyme activity and carbon sources utilization ability distinguished the isolate from its close relatives. Therefore, strain 5221T represents a novel species of the genus Brevibacterium, for which the name Brevibacterium rongguiense sp. nov. is proposed, with the type strain 5221T (=GDMCC 1.1766T=KACC 21700T).


Brevibacterium/classification , Geologic Sediments/microbiology , Phylogeny , Rivers/microbiology , Bacterial Typing Techniques , Base Composition , Brevibacterium/isolation & purification , China , DNA, Bacterial/genetics , Fatty Acids/chemistry , Phospholipids/chemistry , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA , Vitamin K 2/analogs & derivatives , Vitamin K 2/chemistry
5.
Int J Syst Evol Microbiol ; 68(9): 2783-2788, 2018 Sep.
Article En | MEDLINE | ID: mdl-30063198

A Gram-positive, strictly aerobic, non-motile, milky-white to creamy coloured and rod-shaped bacterium, designated BS05T, was isolated from compost. Phylogenetic analysis based on 16S rRNA gene sequence comparison revealed that the strain formed a distinct lineage within the genus Brevibacterium and was most closely related to Brevibacterium avium NCFB 3055T (96.3 %), Brevibacterium oceani BBH7T (96.2 %) and Brevibacterium epidermidis NBRC 14811T (96.1 %). The DNA G+C content was 62.3 mol%. The predominant quinone was MK-8(H2). The major fatty acids were anteiso-C15 : 0, anteiso-C17 : 0, iso-C16 : 0 and iso-C15 : 0. The cell-wall peptidoglycan of strain BS05T contained meso-diaminopimelic acid. The major polar lipid was phosphatidylglycerol. Moreover, the low sequence similarity of the 16S rRNA gene sequencing, physiological, biochemical and chemotaxonomic analyses allowed the phenotypic and genotypic differentiation of strain BS05T from the recognized species of the genus Brevibacterium. Therefore, strain BS05T represents a novel species of the genus Brevibacterium, for which the name Brevibacteriumhankyongi sp. nov. is proposed, with the type strain BS05T (=KACC 18875T=LMG 29562T).


Brevibacterium/classification , Composting , Phylogeny , Soil Microbiology , Bacterial Typing Techniques , Base Composition , Brevibacterium/genetics , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , Diaminopimelic Acid/chemistry , Fatty Acids/chemistry , Nucleic Acid Hybridization , Peptidoglycan/chemistry , Phosphatidylglycerols/chemistry , RNA, Ribosomal, 16S/genetics , Republic of Korea , Sequence Analysis, DNA
6.
J Microbiol ; 56(10): 706-712, 2018 Oct.
Article En | MEDLINE | ID: mdl-30136258

Gram-positive, aerobic, non-motile, pale-yellow, and rodshaped bacterium, designated as Gsoil 188T, was isolated from the soil of a ginseng field in Pocheon, South Korea. A phylogenetic analysis based on 16S rRNA gene sequence comparison revealed that the strain formed a distinct lineage within the genus Brevibacterium and was most closely related to B. epidermidis NBRC 14811T (98.4%), B. sediminis FXJ8.269T (98.2%), B. avium NCFB 3055T (98.1%), and B. oceani BBH7T (98.1%), while it shared less than 98.1% identity with the other species of this genus. The DNA G + C content was 68.1 mol%. The predominant quinone was MK-8(H2). The major fatty acids were anteiso-C15:0 and anteiso-C17:0. The cell wall peptidoglycan of strain Gsoil 188T contained meso-diaminopimelic acid. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol, and an unidentified aminolipid. The physiological and biochemical characteristics, low DNA-DNA relatedness values, and taxonomic analysis allowed the differentiation of strain Gsoil 188T from the other recognized species of the genus Brevibacterium. Therefore, strain Gsoil 188T represents a novel species of the genus Brevibacterium, for which the name Brevibacterium anseongense sp. nov. is proposed, with the type strain Gsoil 188T (= KACC 19439T = LMG 30331T).


Brevibacterium/classification , Panax/microbiology , Phylogeny , Soil Microbiology , Bacterial Typing Techniques , Base Composition , Brevibacterium/genetics , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , Diaminopimelic Acid/analysis , Fatty Acids/analysis , Phosphatidylglycerols/analysis , RNA, Ribosomal, 16S/genetics , Republic of Korea , Sequence Analysis, DNA
7.
BMC Genomics ; 18(1): 955, 2017 Dec 07.
Article En | MEDLINE | ID: mdl-29216827

BACKGROUND: Brevibacterium strains are widely used for the manufacturing of surface-ripened cheeses, contributing to the breakdown of lipids and proteins and producing volatile sulfur compounds and red-orange pigments. The objective of the present study was to perform comparative genomic analyses in order to better understand the mechanisms involved in their ability to grow on the cheese surface and the differences between the strains. RESULTS: The genomes of 23 Brevibacterium strains, including twelve strains isolated from cheeses, were compared for their gene repertoire involved in salt tolerance, iron acquisition, bacteriocin production and the ability to use the energy compounds present in cheeses. All or almost all the genomes encode the enzymes involved in ethanol, acetate, lactate, 4-aminobutyrate and glycerol catabolism, and in the synthesis of the osmoprotectants ectoine, glycine-betaine and trehalose. Most of the genomes contain two contiguous genes encoding extracellular proteases, one of which was previously characterized for its activity on caseins. Genes encoding a secreted triacylglycerol lipase or involved in the catabolism of galactose and D-galactonate or in the synthesis of a hydroxamate-type siderophore are present in part of the genomes. Numerous Fe3+/siderophore ABC transport components are present, part of them resulting from horizontal gene transfers. Two cheese-associated strains have also acquired catecholate-type siderophore biosynthesis gene clusters by horizontal gene transfer. Predicted bacteriocin biosynthesis genes are present in most of the strains, and one of the corresponding gene clusters is located in a probable conjugative transposon that was only found in cheese-associated strains. CONCLUSIONS: Brevibacterium strains show differences in their gene repertoire potentially involved in the ability to grow on the cheese surface. Part of these differences can be explained by different phylogenetic positions or by horizontal gene transfer events. Some of the distinguishing features concern biotic interactions with other strains such as the secretion of proteases and triacylglycerol lipases, and competition for iron or bacteriocin production. In the future, it would be interesting to take the properties deduced from genomic analyses into account in order to improve the screening and selection of Brevibacterium strains, and their association with other ripening culture components.


Brevibacterium/genetics , Cheese/microbiology , Bacteriocins/biosynthesis , Brevibacterium/classification , Brevibacterium/isolation & purification , Brevibacterium/metabolism , Genomics , Glycerol/metabolism , Iron/metabolism , Lipid Metabolism/genetics , Osmotic Pressure , Phenazines/metabolism , Phylogeny
8.
Int J Syst Evol Microbiol ; 67(1): 175-176, 2017 Jan.
Article En | MEDLINE | ID: mdl-27902272

In a recent publication, data was presented supporting Bacillus axarquiensis Ruiz-García et al. 2005, Bacillus malacitensis Ruiz-García et al. 2005 and Brevibacterium halotolerans Delaporte and Sasson 1967 (Approved Lists 1980) being treated as heterotypic synonyms. The nomenclatural consequences proposed were that under these circumstances the correct name to be used is Bacillus axarquiensis Ruiz-García et al. 2005, but this is not consistent with the wording of the International Code of Nomenclature of Prokaryotes and it is, therefore, it is necessary to establish the correct name to be used.


Bacillus/classification , Brevibacterium/classification , Phylogeny
9.
Curr Microbiol ; 74(1): 1-5, 2017 Jan.
Article En | MEDLINE | ID: mdl-27717990

Brevibacterium halotolerans is currently classified as a member of the Brevibacterium genus, a genus that groups together many bacterial species of similar morphology but diverse biochemical and physiological features. Here we suggest, based on multiple gene sequencing and microbial and biochemical characterization of two environmental isolates and one type strain (DSM8802), that the B. halotolerans DSM8802 (and probably the other deposited under this species name) should be re-classified into the Bacillus genus, and offered the name B. halotolerans comb. nov.


Bacillus/classification , Brevibacterium/classification , Bacillus/genetics , Bacillus/growth & development , Bacillus/isolation & purification , Bacterial Proteins/genetics , Bacterial Typing Techniques , Brevibacterium/genetics , Brevibacterium/growth & development , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , DNA, Ribosomal/genetics , Environmental Microbiology , Phylogeny , RNA, Ribosomal, 16S/genetics , Spores, Bacterial/classification , Spores, Bacterial/genetics , Spores, Bacterial/growth & development , Spores, Bacterial/isolation & purification
10.
Int J Syst Evol Microbiol ; 66(12): 5268-5274, 2016 Dec.
Article En | MEDLINE | ID: mdl-27654846

Three actinobacterial strains, FXJ8.128, FXJ8.269T and FXJ8.309, were isolated from deep-sea sediments collected from the Carlsberg Ridge and Southwest Indian Ridge at depths of 3690, 1800 and 2461 m, respectively. The three strains had highly similar 16S rRNA gene sequences (99.8-99.9 % identities) and formed a monophyletic clade within the Brevibacterium 16S rRNA gene tree, showing 98.2-98.9 % 16S rRNA gene sequence identities with type strains Brevibacterium epidermidis NCIMB 702286T, Brevibacterium iodinum DSM 20626T, Brevibacterium linens DSM 20425T, Brevibacterium oceani BBH7T and Brevibacterium permense VKM Ac-2280T. All three isolates showed activity towards the breakdown of pectin and fluoranthene. They contained MK-8(H2) as the most predominant menaquinone, diphosphatidylglycerol, phosphatidylglycerol and a glycolipd as the main polar lipids, and anteiso-C15 : 0 and anteiso-C17 : 0 as the major cellular fatty acids. Moreover, the three isolates were distinguished readily from the phylogenetically related type strains by DNA-DNA hybridization values, by random amplified polymorphic DNA fingerprint profiles and by a range of physiological and biochemical characteristics. On the basis of the above polyphasic taxonomic data, strains FXJ8.128, FXJ8.269T and FXJ8.309 represent a novel species of the genus Brevibacterium, for which the name Brevibacterium sediminis sp. nov. is proposed. The type strain is FXJ8.269T (=CGMCC 1.15472T=DSM 102229T).


Brevibacterium/classification , Phylogeny , Seawater/microbiology , Bacterial Typing Techniques , Base Composition , Brevibacterium/genetics , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , Fatty Acids/chemistry , Geologic Sediments/microbiology , Indian Ocean , Nucleic Acid Hybridization , Phospholipids/chemistry , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA , Vitamin K 2/analogs & derivatives , Vitamin K 2/chemistry
11.
Int J Syst Evol Microbiol ; 66(11): 4440-4444, 2016 Nov.
Article En | MEDLINE | ID: mdl-27498845

A patient strain derived from urine was found by 16S rRNA gene sequencing to be closely related (99.6 % identity) to sequences derived from both Brevibacterium ravenspurgense CCUG 56047T and Brevibacterium massilienseCCUG 53855T. Those species had been described during the same 11 month period in 2008-2009. Further characterization revealed that those isolates could not be readily distinguished from each other biochemically, by cellular fatty acids, antimicrobial susceptibility, MALDI-TOF MS, 16S rRNA gene sequencing or by whole-genome sequence (WGS) analyses. By WGS comparison, these isolates had an aerage nucleotide identity using blastn (ANIb) scores of 95.7 % or higher to each other, DNA G+C content in the range of 62.3 mol%-62.4 mol%, with genome sizes ranging from 2.28×106 to 2.41×106 bases. Based on these data, we propose that the name B. massiliense is a later heterotypic synonym of B. ravenspurgense and provide an emended description of B. ravenspurgense.


Brevibacterium/classification , Phylogeny , Urine/microbiology , Bacterial Typing Techniques , Base Composition , Brevibacterium/genetics , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , Fatty Acids/chemistry , Humans , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA
12.
Arch Microbiol ; 197(10): 1151-8, 2015 Dec.
Article En | MEDLINE | ID: mdl-26429721

A Gram-positive, aerobic, nonmotile strain, NM2E3(T) was identified as Brevibacterium based on the 16S rRNA gene sequence analysis and had the highest similarities to Brevibacterium jeotgali SJ5-8(T) (97.3 %). This novel bacterium was isolated from root tissue of Prosopis laegivata grown at the edge of a mine tailing in San Luis Potosí, Mexico. Its cells were non-spore-forming rods, showing catalase and oxidase activities and were able to grow in LB medium added with 40 mM Cu(2+), 72 mM As(5+) and various other toxic elements. Anteiso-C15:0 (41.6 %), anteiso-C17:0 (30 %) and iso-C15:0 (9.5 %) were the major fatty acids. MK-8(H2) (88.4 %) and MK-7(H2) (11.6 %) were the major menaquinones. The DNA G + C content of the strain NM2E3(T) was 70.8 mol % (Tm). DNA-DNA hybridization showed that the strain NM2E3(T) had 39.8, 21.7 and 20.3 % relatedness with B. yomogidense JCM 17779(T), B. jeotgali JCM 18571(T) and B. salitolerans TRM 45(T), respectively. Based on the phenotypic and genotypic analyses, the strain NM2E3(T) (=CCBAU 101093(T) = HAMBI 3627(T) = LMG 8673(T)) is reported as a novel species of the genus Brevibacterium, for which the name Brevibacterium metallicus sp. nov., is proposed.


Brevibacterium/isolation & purification , Brevibacterium/metabolism , Metals, Heavy/metabolism , Plant Roots/microbiology , Prosopis/microbiology , Symbiosis/physiology , Bacterial Typing Techniques , Base Composition/genetics , Brevibacterium/classification , Brevibacterium/genetics , DNA, Bacterial/genetics , Fatty Acids/analysis , Mexico , Mining , Nucleic Acid Hybridization , Phylogeny , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA , Vitamin K 2/analysis
13.
Braz J Microbiol ; 46(2): 347-54, 2015 Jun.
Article En | MEDLINE | ID: mdl-26273248

Halophilic microorganisms are able to grow in the presence of salt and are also excellent source of enzymes and biotechnological products, such as exopolysaccharides (EPSs) and polyhydroxyalkanoates (PHAs). Salt-tolerant bacteria were screened in the Organic Composting Production Unit (OCPU) of São Paulo Zoological Park Foundation, which processes 4 ton/day of organic residues including plant matter from the Atlantic Rain Forest, animal manure and carcasses and mud from water treatment. Among the screened microorganisms, eight halotolerant bacteria grew at NaCl concentrations up to 4 M. These cultures were classified based on phylogenetic characteristics and comparative partial 16S rRNA gene sequence analysis as belonging to the genera Staphylococcus, Bacillus and Brevibacterium. The results of this study describe the ability of these halotolerant bacteria to produce some classes of hydrolases, namely, lipases, proteases, amylases and cellulases, and biopolymers. The strain characterized as of Brevibacterium avium presented cellulase and amylase activities up to 4 M NaCl and also produced EPSs and PHAs. These results indicate the biotechnological potential of certain microorganisms recovered from the composting process, including halotolerant species, which have the ability to produce enzymes and biopolymers, offering new perspectives for environmental and industrial applications.


Bacillus/isolation & purification , Biological Products/analysis , Brevibacterium/isolation & purification , Hydrolases/analysis , Sodium Chloride/metabolism , Soil Microbiology , Staphylococcus/isolation & purification , Bacillus/classification , Bacillus/genetics , Bacillus/metabolism , Brazil , Brevibacterium/classification , Brevibacterium/genetics , Brevibacterium/metabolism , Cluster Analysis , DNA, Bacterial/chemistry , DNA, Bacterial/genetics , DNA, Ribosomal/chemistry , DNA, Ribosomal/genetics , Molecular Sequence Data , Phylogeny , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA , Soil , Staphylococcus/classification , Staphylococcus/genetics , Staphylococcus/metabolism
14.
Braz. j. microbiol ; 46(2): 347-354, Apr-Jun/2015. tab, graf
Article En | LILACS | ID: lil-749729

Halophilic microorganisms are able to grow in the presence of salt and are also excellent source of enzymes and biotechnological products, such as exopolysaccharides (EPSs) and polyhydroxyalkanoates (PHAs). Salt-tolerant bacteria were screened in the Organic Composting Production Unit (OCPU) of São Paulo Zoological Park Foundation, which processes 4 ton/day of organic residues including plant matter from the Atlantic Rain Forest, animal manure and carcasses and mud from water treatment. Among the screened microorganisms, eight halotolerant bacteria grew at NaCl concentrations up to 4 M. These cultures were classified based on phylogenetic characteristics and comparative partial 16S rRNA gene sequence analysis as belonging to the genera Staphylococcus, Bacillus and Brevibacterium. The results of this study describe the ability of these halotolerant bacteria to produce some classes of hydrolases, namely, lipases, proteases, amylases and cellulases, and biopolymers. The strain characterized as of Brevibacterium avium presented cellulase and amylase activities up to 4 M NaCl and also produced EPSs and PHAs. These results indicate the biotechnological potential of certain microorganisms recovered from the composting process, including halotolerant species, which have the ability to produce enzymes and biopolymers, offering new perspectives for environmental and industrial applications.


Bacillus/isolation & purification , Biological Products/analysis , Brevibacterium/isolation & purification , Hydrolases/analysis , Soil Microbiology , Sodium Chloride/metabolism , Staphylococcus/isolation & purification , Brazil , Bacillus/classification , Bacillus/genetics , Bacillus/metabolism , Brevibacterium/classification , Brevibacterium/genetics , Brevibacterium/metabolism , Cluster Analysis , DNA, Bacterial/chemistry , DNA, Bacterial/genetics , DNA, Ribosomal/chemistry , DNA, Ribosomal/genetics , Molecular Sequence Data , Phylogeny , /genetics , Sequence Analysis, DNA , Soil , Staphylococcus/classification , Staphylococcus/genetics , Staphylococcus/metabolism
15.
Appl Environ Microbiol ; 81(14): 4616-25, 2015 Jul.
Article En | MEDLINE | ID: mdl-25934617

Disposal of fecally contaminated poultry litter by land application can deliver pathogens and fecal indicator bacteria (FIB) into receiving waters via runoff. While water quality is regulated by FIB enumeration, FIB testing provides inadequate information about contamination source and health risk. This microbial source tracking (MST) study compared the persistence of the Brevibacterium sp. strain LA35 16S rRNA gene (marker) for poultry litter with that of pathogens and FIB under outdoor, environmentally relevant conditions in freshwater, marine water, and sediments over 7 days. Salmonella enterica, Campylobacter jejuni, Campylobacter coli, Bacteroidales, and LA35 were enumerated by quantitative PCR (qPCR), and Enterococcus spp. and E. coli were quantified by culture and qPCR. Unlike the other bacteria, C. jejuni was not detectable after 48 h. Bacterial levels in the water column consistently declined over time and were highly correlated among species. Survival in sediments ranged from a slow decrease over time to growth, particularly in marine microcosms and for Bacteroidales. S. enterica also grew in marine sediments. Linear decay rates in water (k) ranged from -0.17 day(-1) for LA35 to -3.12 day(-1) for C. coli. LA35 levels correlated well with those of other bacteria in the water column but not in sediments. These observations suggest that, particularly in the water column, the fate of LA35 in aquatic environments is similar to that of FIB, C. coli, and Salmonella, supporting the hypothesis that the LA35 marker gene can be a useful tool for evaluating the impact of poultry litter on water quality and human health risk.


Brevibacterium/isolation & purification , Feces/microbiology , Fresh Water/microbiology , RNA, Ribosomal, 16S/genetics , Animals , Brevibacterium/classification , Brevibacterium/genetics , DNA, Bacterial/genetics , Fresh Water/analysis , Genetic Markers , Poultry , Real-Time Polymerase Chain Reaction
16.
Braz. j. infect. dis ; 19(2): 213-215, Mar-Apr/2015.
Article En | LILACS | ID: lil-746512

Brevibacterium spp. are catalase-positive, non-spore-forming, non motile, aerobic Gram- positive rods that were considered apathogenic until a few reports of infections in immunocompromised patients had been published. To the best of our knowledge, this is the first report of B. casei catheter-related bloodstream infection in a child with acute leukemia. We aim to enhance the awareness of pediatric hematology and infectious disease specialists about this pathogen and review of the literature.


Humans , Male , Child , Actinomycetales Infections/microbiology , Brevibacterium/isolation & purification , Catheter-Related Infections/microbiology , Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/complications , Brevibacterium/classification
17.
Braz J Infect Dis ; 19(2): 213-5, 2015.
Article En | MEDLINE | ID: mdl-25636191

Brevibacterium spp. are catalase-positive, non-spore-forming, non motile, aerobic Gram-positive rods that were considered apathogenic until a few reports of infections in immunocompromised patients had been published. To the best of our knowledge, this is the first report of B. casei catheter-related bloodstream infection in a child with acute leukemia. We aim to enhance the awareness of pediatric hematology and infectious disease specialists about this pathogen and review of the literature.


Actinomycetales Infections/microbiology , Brevibacterium/isolation & purification , Catheter-Related Infections/microbiology , Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/complications , Brevibacterium/classification , Child , Humans , Male
18.
Appl Microbiol Biotechnol ; 97(16): 7185-94, 2013 Aug.
Article En | MEDLINE | ID: mdl-23760530

Enantioselective oxidation of racemic phenyl-1,2-ethanediol into (R)-(-)-mandelic acid by a newly isolated Brevibacterium lutescens CCZU12-1 was demonstrated. It was found that optically active (R)-(-)-mandelic acid (e.e.p > 99.9 %) is produced leaving the other enantiomer (S)-(+)-phenyl-1,2-ethanediol intact. Using fed-batch method, a total of 172.9 mM (R)-(-)-mandelic acid accumulated in the reaction mixture after the seventh feed. Moreover, oxidation of phenyl-1,2-ethanediol using calcium alginate-entrapped resting cells was carried out in the aqueous system, and efficient biocatalyst recycling was achieved as a result of cell immobilization in calcium alginate, with a product-to-biocatalyst ratio of 27.94 g (R)-(-)-mandelic acid g⁻¹ dry cell weight cell after 16 cycles of repeated use.


Brevibacterium/metabolism , Ethylene Glycols/metabolism , Mandelic Acids/metabolism , Alginates , Brevibacterium/classification , Brevibacterium/genetics , Brevibacterium/isolation & purification , Cells, Immobilized/metabolism , Cluster Analysis , DNA, Bacterial/chemistry , DNA, Bacterial/genetics , DNA, Ribosomal/chemistry , DNA, Ribosomal/genetics , Glucuronic Acid , Hexuronic Acids , Molecular Sequence Data , Oxidation-Reduction , Phylogeny , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA , Stereoisomerism , Substrate Specificity
19.
World J Microbiol Biotechnol ; 29(12): 2271-9, 2013 Dec.
Article En | MEDLINE | ID: mdl-23749248

Present study deals with the isolation of rhizobacteria and selection of plant growth promoting bacteria from Crocus sativus (Saffron) rhizosphere during its flowering period (October-November). Bacterial load was compared between rhizosphere and bulk soil by counting CFU/gm of roots and soil respectively, and was found to be ~40 times more in rhizosphere. In total 100 bacterial isolates were selected randomly from rhizosphere and bulk soil (50 each) and screened for in-vitro and in vivo plant growth promoting properties. The randomly isolated bacteria were identified by microscopy, biochemical tests and sequence homology of V1-V3 region of 16S rRNA gene. Polyphasic identification categorized Saffron rhizobacteria and bulk soil bacteria into sixteen different bacterial species with Bacillus aryabhattai (WRF5-rhizosphere; WBF3, WBF4A and WBF4B-bulk soil) common to both rhizosphere as well as bulk soil. Pseudomonas sp. in rhizosphere and Bacillus and Brevibacterium sp. in the bulk soil were the predominant genera respectively. The isolated rhizobacteria were screened for plant growth promotion activity like phosphate solubilization, siderophore and indole acetic acid production. 50 % produced siderophore and 33 % were able to solubilize phosphate whereas all the rhizobacterial isolates produced indole acetic acid. The six potential PGPR showing in vitro activities were used in pot trial to check their efficacy in vivo. These bacteria consortia demonstrated in vivo PGP activity and can be used as PGPR in Saffron as biofertilizers.This is the first report on the isolation of rhizobacteria from the Saffron rhizosphere, screening for plant growth promoting bacteria and their effect on the growth of Saffron plant.


Bacteria/isolation & purification , Bacteria/metabolism , Crocus/growth & development , Crocus/microbiology , Rhizosphere , Bacillus/classification , Bacillus/genetics , Bacillus/isolation & purification , Bacillus/metabolism , Bacteria/classification , Bacteria/genetics , Bacterial Load , Bacterial Proteins/genetics , Bacterial Proteins/metabolism , Brevibacterium/classification , Brevibacterium/genetics , Brevibacterium/isolation & purification , Brevibacterium/metabolism , Indoleacetic Acids/metabolism , Phosphates/metabolism , Phylogeny , Plant Roots/microbiology , Pseudomonas/classification , Pseudomonas/genetics , Pseudomonas/isolation & purification , Pseudomonas/metabolism , RNA, Ribosomal, 16S/genetics , Siderophores/metabolism , Soil Microbiology
20.
Int J Syst Evol Microbiol ; 63(Pt 9): 3430-3436, 2013 Sep.
Article En | MEDLINE | ID: mdl-23543497

A Gram-staining-positive, aerobic, non-motile bacterium, designated strain SJ5-8(T), was isolated from seau-jeot (shrimp jeotgal), a traditional fermented seafood in South Korea. Cells were non-spore-forming rods showing catalase- and oxidase-positive reactions. Growth of strain SJ5-8(T) was observed at 10-37 °C (optimum, 30 °C), at pH 6.0-9.0 (optimum, pH 7.5-8.5) and in the presence of 0-14% (w/v) NaCl (optimum, 5%). Phylogenetic inference based on 16S rRNA gene sequences showed that the strain formed a tight phyletic lineage with members of the genus Brevibacterium. Strain SJ5-8(T) was most closely related to Brevibacterium yomogidense MN-6-a(T), Brevibacterium daeguense 2C6-41(T) and Brevibacterium salitolerans TRM 415(T) with similarities of 98.9, 97.5 and 97.4%, respectively. The DNA-DNA relatedness values between strain SJ5-8(T) and the type strains of B. yomogidense, B. daeguense and B. salitolerans were 51.7 ± 1.9%, 22.2 ± 4.0% and 52.4 ± 3.8%, respectively. Chemotaxonomic data (major sole isoprenoid quinone, MK-8(H2); major diagnostic diamino acid, meso-diaminopimelic acid; major polyamines, putrescine and cadaverine; major cellular fatty acids, anteiso-C(15:0), iso-C(15:0) and anteiso-C(17:0); major polar lipids, phosphatidylglycerol and diphosphatidylglycerol; DNA G+C content, 69.3 mol%) also supported the affiliation of strain SJ5-8(T) to the genus Brevibacterium. Therefore, strain SJ5-8(T) represents a novel species of the genus Brevibacterium, for which the name Brevibacterium jeotgali sp. nov. is proposed. The type strain is SJ5-8(T) ( =KACC 16911(T) =JCM 18571(T)).


Brevibacterium/classification , Fermentation , Phylogeny , Seafood/microbiology , Base Composition , Brevibacterium/genetics , Brevibacterium/isolation & purification , DNA, Bacterial/genetics , Diaminopimelic Acid/analysis , Fatty Acids/analysis , Molecular Sequence Data , Nucleic Acid Hybridization , Polyamines/analysis , RNA, Ribosomal, 16S/genetics , Republic of Korea , Sequence Analysis, DNA , Vitamin K 2/analogs & derivatives , Vitamin K 2/analysis
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