Base de dados : MEDLINE
Pesquisa : B03.510.024.049.475 [Categoria DeCS]
Referências encontradas : 590 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 59 ir para página                         

  1 / 590 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29484747
[Au] Autor:Hirad AH; Ahmad J; Alkhedhairy AA; Bahkali AH; Khan ST
[Ad] Endereço:Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.
[Ti] Título:Bacterial isolates exhibiting multidrug resistance, hemolytic activity, and high 16S rRNA gene similarity with well-known pathogens found in camel milk samples of Riyadh region.
[So] Source:APMIS;126(3):215-226, 2018 Mar.
[Is] ISSN:1600-0463
[Cp] País de publicação:Denmark
[La] Idioma:eng
[Ab] Resumo:Customary consumption of unpasteurized milk by the population in the central Najed region of Saudi Arabia may pose a health risk. Therefore, 80 camel milk samples were collected aseptically from seven different stations of Riyadh region. The biochemical and microbiological properties of these milk samples were determined. Nutrient agar and brain heart infusion agar were used to determine mesophilic aerobic counts (MACs). The MAC in each mL of milk varied from 60 to 16 × 10  CFU/mL on nutrient agar. Based on the colony morphology, 176 colonies were collected from different samples, and these isolates were de-replicated into 80 unique isolates using rep-PCR analysis. Surprisingly, the 16S rRNA sequence analysis of these strains revealed that more than one-third of the collected milk samples contained strains that share maximum sequence similarities with well-known pathogens, such as Brucella, Bacillus anthracis, Listeria monocytogenes, and MRSA. Furthermore, many strains exhibit 16S rRNA gene similarity with opportunistic pathogens such as Citrobacter freundii and Kytococcus schroeteri. Many strains exhibit ß-hemolytic activity and resistant to six different antibiotics. Our study suggested that consumption of raw camel milk from this region constitutes a great health risk.
[Mh] Termos MeSH primário: Bactérias/isolamento & purificação
Leite/química
Leite/microbiologia
[Mh] Termos MeSH secundário: Animais
Bacillus anthracis/genética
Bacillus anthracis/isolamento & purificação
Bactérias/genética
Carga Bacteriana
Brucella/genética
Brucella/isolamento & purificação
Camelus
Citrobacter freundii/genética
Citrobacter freundii/isolamento & purificação
Microbiologia de Alimentos
Seres Humanos
Listeria monocytogenes/genética
Listeria monocytogenes/isolamento & purificação
Staphylococcus aureus Resistente à Meticilina/genética
Staphylococcus aureus Resistente à Meticilina/isolamento & purificação
Micrococcaceae/genética
Micrococcaceae/isolamento & purificação
Pasteurização
RNA Ribossômico 16S/genética
Arábia Saudita
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 16S)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180228
[St] Status:MEDLINE
[do] DOI:10.1111/apm.12802


  2 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28841530
[Au] Autor:Yang X; Wei H; Zhu C; Geng B
[Ad] Endereço:Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China.
[Ti] Título:Biodegradation of atrazine by the novel Citricoccus sp. strain TT3.
[So] Source:Ecotoxicol Environ Saf;147:144-150, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:A previously undescribed atrazine-degrading bacterial strain TT3 capable of growing with atrazine as its sole nitrogen source was isolated from soil at the wastewater outfall of a pesticide factory in China. Phenotypic characterization and 16S rRNA gene sequencing indicated that the isolate belonged to the genus Citricoccus. Polymerase chain reaction (PCR) analysis revealed that TT3 contained the atrazine-degrading genes trzN, atzB, and atzC. The range for growth and atrazine degradation of TT3 was found to be pH 6.0-11.0, with a preference for alkaline conditions. At 30°C and pH 7.0, the strain removed 50mg/L atrazine in 66h with 1% inoculum. These results demonstrate that Citricoccus sp. TT3 has great potential for bioremediation of atrazine-contaminated sites, particularly in alkaline environments. To the best of our knowledge, there are no previous reports of Citricoccus strains that degrade atrazine, and therefore this work provides a novel candidate for atrazine bioremediation.
[Mh] Termos MeSH primário: Atrazina/análise
Herbicidas/análise
Micrococcaceae/crescimento & desenvolvimento
Microbiologia do Solo
Poluentes do Solo/análise
[Mh] Termos MeSH secundário: Atrazina/metabolismo
Biodegradação Ambiental
China
Herbicidas/metabolismo
Micrococcaceae/isolamento & purificação
RNA Ribossômico 16S/genética
Solo/química
Poluentes do Solo/metabolismo
Eliminação de Resíduos Líquidos
Águas Residuais/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Herbicides); 0 (RNA, Ribosomal, 16S); 0 (Soil); 0 (Soil Pollutants); 0 (Waste Water); QJA9M5H4IM (Atrazine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170826
[St] Status:MEDLINE


  3 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28841524
[Au] Autor:Bharagava RN; Mishra S
[Ad] Endereço:Laboratory for Bioremediation and Metagenomics Research (LBMR), Department of Environmental Microbiology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow 226025, U.P., India. Electronic address: bharagavarnbbau11@gmail.com.
[Ti] Título:Hexavalent chromium reduction potential of Cellulosimicrobium sp. isolated from common effluent treatment plant of tannery industries.
[So] Source:Ecotoxicol Environ Saf;147:102-109, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Present study deals with the isolation and characterization of a bacterium capable for the effective reduction of Cr(VI) from tannery wastewater. Based on the 16S rRNA gene sequence analysis, this bacterium was identified as Cellulosimicrobium sp. (KX710177). During the Cr(VI) reduction experiment performed at 50, 100, 200,and 300mg/L of Cr(VI) concentrations, the bacterium showed 99.33% and 96.98% reduction at 50 and 100mg/L at 24 and 96h, respectively. However, at 200 and 300mg/L concentration of Cr(VI), only 84.62% and 62.28% reduction was achieved after 96h, respectively. The SEM analysis revealed that bacterial cells exposed to Cr(VI) showed increased cell size in comparison to unexposed cells, which might be due to either the precipitation or adsorption of reduced Cr(III) on bacterial cells. Further, the Energy Dispersive X-ray (EDX) analysis showed some chromium peaks for cells exposed to Cr(VI), which might be either due to the presence of precipitated reduced Cr(III) on cells or complexation of Cr(III) with cell surface molecules. The bacterium also showed resistance and sensitivity against the tested antibiotics with a wide range of MIC values ranging from 250 to 800mg/L for different heavy metals. Thus, this multi-drug and multi-metal resistant bacterium can be used as a potential agent for the effective bioremediation of metal contaminated sites.
[Mh] Termos MeSH primário: Cromo/análise
Micrococcaceae/isolamento & purificação
Curtume
Águas Residuais/microbiologia
Poluentes Químicos da Água/análise
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Cromo/química
Cromo/toxicidade
Relação Dose-Resposta a Droga
Testes de Sensibilidade Microbiana
Micrococcaceae/efeitos dos fármacos
Micrococcaceae/genética
Oxirredução
RNA Ribossômico 16S/genética
Águas Residuais/análise
Poluentes Químicos da Água/química
Poluentes Químicos da Água/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 16S); 0 (Waste Water); 0 (Water Pollutants, Chemical); 0R0008Q3JB (Chromium); 18540-29-9 (chromium hexavalent ion)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170826
[St] Status:MEDLINE


  4 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
[PMID]:29211248
[Au] Autor:Loong SK; Tan KK; Zainal N; Phoon WH; Zain SNM; AbuBakar S
[Ad] Endereço:University of Malaya, Faculty of Medicine, Tropical Infectious Diseases Research & Education Centre, Kuala Lumpur, Malaysia.
[Ti] Título:Draft genome of the emerging pathogen, Kocuria marina, isolated from a wild urban rat.
[So] Source:Mem Inst Oswaldo Cruz;112(12):857-859, 2017 Dec.
[Is] ISSN:1678-8060
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:Kocuria marina has recently emerged as a cause for catheter-related bloodstream infections in patients with underlying health complications. One K. marina strain was recently isolated from the lung tissues of a wild urban rat (Rattus rattus diardii) caught during rodent surveillance. Here, we present the draft genome of the first K. marina animal isolate, K. marina TRE150902.
[Mh] Termos MeSH primário: Genoma Bacteriano/genética
Micrococcaceae/genética
Ratos/microbiologia
[Mh] Termos MeSH secundário: Animais
Micrococcaceae/isolamento & purificação
Micrococcaceae/ultraestrutura
Microscopia Eletrônica de Transmissão
População Urbana
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171227
[Lr] Data última revisão:
171227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE


  5 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28905704
[Au] Autor:Borsodi AK; Szili-Kovács T; Schumann P; Spröer C; Márialigeti K; Tóth E
[Ad] Endereço:1​Department of Microbiology, ELTE Eötvös Loránd University, Pázmány P. sétány 1/C, H-1117 Budapest, Hungary.
[Ti] Título:Nesterenkonia pannonica sp. nov., a novel alkaliphilic and moderately halophilic actinobacterium.
[So] Source:Int J Syst Evol Microbiol;67(10):4116-4120, 2017 Oct.
[Is] ISSN:1466-5034
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:An alkaliphilic and moderately halophilic bacterial strain characterized by optimal growth at pH 9.0-10.0 and with 5-7 % (w/v) NaCl, designated BV-35 , was isolated from water of a soda pan located in Kiskunság National Park, Hungary. Cells of the orange-pigmented colony were Gram-stain-positive, non-motile and non-endospore-forming coccoid rods. The isolate was strictly aerobic, catalase-positive and oxidase-negative. Strain BV-35 displayed a peptidoglycan similar to type A4α, l-Lys-l-Glu (A11.54 according to www.peptidoglycan-types.info) but containing additionally 4-aminobutyric acid. Menaquinone-7 (MK-7) was the predominant isoprenoid quinone, and anteiso-C15 : 0 and anteiso-C17 : 0 were its major cellular fatty acids. The DNA G+C content of strain BV-35 was 65.4 mol%. Based on 16S rRNA gene sequence similarities, the novel isolate showed the closest relationship to Nesterenkonia populi GP 10-3 (97.9 %). The DNA-DNA relatedness between BV-35 and N. populi was 46.7 %. The distinguishing phenotypic and genetic results of this polyphasic study revealed that strain BV-35 represents a novel member of the genus Nesterenkonia, for which the name Nesterenkonia pannonica sp. nov. is proposed. The type strain is BV-35 (=DSM 29786 =NCAIM B 02606 ).
[Mh] Termos MeSH primário: Micrococcaceae/classificação
Filogenia
Microbiologia da Água
[Mh] Termos MeSH secundário: Álcalis
Técnicas de Tipagem Bacteriana
Composição de Bases
DNA Bacteriano/genética
Ácidos Graxos/química
Hungria
Concentração de Íons de Hidrogênio
Micrococcaceae/genética
Micrococcaceae/isolamento & purificação
Hibridização de Ácido Nucleico
Peptidoglicano/química
RNA Ribossômico 16S/genética
Análise de Sequência de DNA
Vitamina K 2/análogos & derivados
Vitamina K 2/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkalies); 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (Peptidoglycan); 0 (RNA, Ribosomal, 16S); 11032-49-8 (Vitamin K 2); 8427BML8NY (vitamin MK 7)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170915
[St] Status:MEDLINE
[do] DOI:10.1099/ijsem.0.002263


  6 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28853684
[Au] Autor:Tóth Á; Baka E; Bata-Vidács I; Luzics S; Kosztik J; Tóth E; Kéki Z; Schumann P; Táncsics A; Nagy I; Sós E; Kukolya J
[Ad] Endereço:1​Department of Applied and Environmental Microbiology, Agro-Environmental Research Institute, National Agricultural Research and Innovation Centre, H-1022 Budapest, Herman Ottó u. 15, Hungary.
[Ti] Título:Micrococcoides hystricis gen. nov., sp. nov., a novel member of the family Micrococcaceae, phylum Actinobacteria.
[So] Source:Int J Syst Evol Microbiol;67(8):2758-2765, 2017 Aug.
[Is] ISSN:1466-5034
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A Gram-stain-positive bacterium, designated TSL3T, was isolated from faeces of a porcupine, Hystrix indica, from the Budapest Zoo and Botanical Garden, Hungary. On the basis of 16S rRNA gene sequence analysis, the strain is phylogenetically related to the family Micrococcaceae. The highest 16S rRNA gene sequence similarity was found with Micrococcus terreus V3M1T (96.50 %) followed by Arthrobacter humicola KV-653T (96.43 %). Cells of strain TSL3T were aerobic, non-motile and coccoid-shaped. The main fatty acids were anteiso-C15 : 0 (54.4 %), iso-C16 : 0 (18.2 %) and iso C15 : 0 (9.7 %). The major menaquinone was MK-7, and the polar lipid profile included phosphatidylglycerol, diphosphatidylglycerol, dimannosylglyceride, trimannosyldiacylglycerol, phosphatidylinositol, three unknown phospholipids and two unknown glycolipids. Strain TSL3T showed the peptidoglycan structure A4alpha l-Lys - Gly - l-Glu. The DNA G+C content of strain TSL3T was 58.4 mol%. Phenotypic and genotypic characterisation clearly showed that strain TSL3T could be differerentiated from the members of other genera in the family Micrococcaceae. According to these results, strain TSL3T represents a novel genus and species, for which the name Micrococcoides hystricis gen. nov., sp. nov. is proposed. The type strain is TSL3T (=DSM 29785T=NCAIM B. 02604T).
[Mh] Termos MeSH primário: Micrococcaceae/classificação
Filogenia
Porcos-Espinhos/microbiologia
[Mh] Termos MeSH secundário: Animais
Animais de Zoológico/microbiologia
Arthrobacter/classificação
Técnicas de Tipagem Bacteriana
Composição de Bases
Parede Celular/química
DNA Bacteriano/genética
Ácidos Graxos/química
Fezes/microbiologia
Glicolipídeos/química
Hungria
Micrococcaceae/genética
Micrococcaceae/isolamento & purificação
Peptidoglicano/química
Fosfolipídeos/química
RNA Ribossômico 16S/genética
Análise de Sequência de DNA
Vitamina K 2/análogos & derivados
Vitamina K 2/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial); 0 (Fatty Acids); 0 (Glycolipids); 0 (Peptidoglycan); 0 (Phospholipids); 0 (RNA, Ribosomal, 16S); 11032-49-8 (Vitamin K 2); 8427BML8NY (vitamin MK 7)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170915
[Lr] Data última revisão:
170915
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170831
[St] Status:MEDLINE
[do] DOI:10.1099/ijsem.0.002018


  7 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28796837
[Au] Autor:Sechler AJ; Tancos MA; Schneider DJ; King JG; Fennessey CM; Schroeder BK; Murray TD; Luster DG; Schneider WL; Rogers EE
[Ad] Endereço:Foreign Disease/Weed Science Research Unit, Agricultural Research Service, U.S. Dept. of Agriculture, Frederick, Maryland, United States of America.
[Ti] Título:Whole genome sequence of two Rathayibacter toxicus strains reveals a tunicamycin biosynthetic cluster similar to Streptomyces chartreusis.
[So] Source:PLoS One;12(8):e0183005, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Rathayibacter toxicus is a forage grass associated Gram-positive bacterium of major concern to food safety and agriculture. This species is listed by USDA-APHIS as a plant pathogen select agent because it produces a tunicamycin-like toxin that is lethal to livestock and may be vectored by nematode species native to the U.S. The complete genomes of two strains of R. toxicus, including the type strain FH-79, were sequenced and analyzed in comparison with all available, complete R. toxicus genomes. Genome sizes ranged from 2,343,780 to 2,394,755 nucleotides, with 2079 to 2137 predicted open reading frames; all four strains showed remarkable synteny over nearly the entire genome, with only a small transposed region. A cluster of genes with similarity to the tunicamycin biosynthetic cluster from Streptomyces chartreusis was identified. The tunicamycin gene cluster (TGC) in R. toxicus contained 14 genes in two transcriptional units, with all of the functional elements for tunicamycin biosynthesis present. The TGC had a significantly lower GC content (52%) than the rest of the genome (61.5%), suggesting that the TGC may have originated from a horizontal transfer event. Further analysis indicated numerous remnants of other potential horizontal transfer events are present in the genome. In addition to the TGC, genes potentially associated with carotenoid and exopolysaccharide production, bacteriocins and secondary metabolites were identified. A CRISPR array is evident. There were relatively few plant-associated cell-wall hydrolyzing enzymes, but there were numerous secreted serine proteases that share sequence homology to the pathogenicity-associated protein Pat-1 of Clavibacter michiganensis. Overall, the genome provides clear insight into the possible mechanisms for toxin production in R. toxicus, providing a basis for future genetic approaches.
[Mh] Termos MeSH primário: Genoma Bacteriano
Micrococcaceae/genética
Família Multigênica
Streptomyces/genética
Tunicamicina/genética
[Mh] Termos MeSH secundário: Composição de Bases
Repetições Palindrômicas Curtas Agrupadas e Regularmente Espaçadas
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
11089-65-9 (Tunicamycin)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171004
[Lr] Data última revisão:
171004
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170811
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0183005


  8 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28665262
[Au] Autor:Sultanpuram VR; Mothe T; Chintalapati S; Chintalapati VR
[Ad] Endereço:1​Microbial Ecology Lab, Department of Biochemistry, Mahatma Gandhi University, Anneparthy, Yellareddygudem (PO), Nalgonda 508254, Telangana, India.
[Ti] Título:Nesterenkonia cremea sp. nov., a bacterium isolated from a soda lake.
[So] Source:Int J Syst Evol Microbiol;67(6):1861-1866, 2017 Jun.
[Is] ISSN:1466-5034
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A Gram-stain-positive, aerobic, non-motile, rod-shaped, non-endospore-forming bacterial strain, 10CT, was isolated from Lonar soda lake in India. Based on the 16S rRNA gene sequence analysis, this strain was identified as belonging to the genus Nesterenkonia and was most closely related to the type strains of Nesterenkonia lacusekhoensis (99.1 %, sequence similarity), Nesterenkonia aethiopica (96.9 %), Nesterenkonia flava (96.9 %) and related of the genus Nesterenkonia (<96.6 %, sequence similarity). However, the DNA-DNA relatedness of strain 10CT with N. lacusekhoensis KCTC 19283T was only 34.6±0.9. The DNA G+C content of strain 10CT was 68.6 mol%. Strain 10CT was an aerobic microbe with optimal growth at 37 °C, pH 7.5-8.0 and 5-6 % (w/v) NaCl. The cell-wall peptidoglycan of strain 10CT was of the type A4α (l-Lys-l-Glu). The major polar lipids present were phosphatidylglycerol, diphosphatidylglycerol and phosphatidylcholine. The major isoprenoid quinones were MK-7, MK-8 and MK-9. Major fatty acids of strain 10CT were anteiso-C15 : 0, anteiso-C17 : 0 and iso-C16 : 0. The results of phylogenetic, chemotaxonomic and biochemical tests allowed a clear differentiation of strain 10CT, which represents a novel member of the genus Nesterenkonia for which the name Nesterenkonia cremea sp. nov. is proposed. The type strain is 10CT (=LMG 29100T=KCTC 39636T=CGMCC 1.15388T).
[Mh] Termos MeSH primário: Álcalis
Lagos/microbiologia
Micrococcaceae/classificação
Filogenia
[Mh] Termos MeSH secundário: Técnicas de Tipagem Bacteriana
Composição de Bases
Parede Celular/química
DNA Bacteriano/genética
Ácidos Graxos/química
Índia
Micrococcaceae/genética
Micrococcaceae/isolamento & purificação
Hibridização de Ácido Nucleico
Peptidoglicano/química
RNA Ribossômico 16S/genética
Análise de Sequência de DNA
Vitamina K 2/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkalies); 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (Peptidoglycan); 0 (RNA, Ribosomal, 16S); 11032-49-8 (Vitamin K 2)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170906
[Lr] Data última revisão:
170906
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170701
[St] Status:MEDLINE
[do] DOI:10.1099/ijsem.0.001876


  9 / 590 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28418289
[Au] Autor:Rajer FU; Wu H; Xie Y; Xie S; Raza W; Tahir HAS; Gao X
[Ad] Endereço:Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, PR China.
[Ti] Título:Volatile organic compounds produced by a soil-isolate, Bacillus subtilis FA26 induce adverse ultra-structural changes to the cells of Clavibacter michiganensis ssp. sepedonicus, the causal agent of bacterial ring rot of potato.
[So] Source:Microbiology;163(4):523-530, 2017 Apr.
[Is] ISSN:1465-2080
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Rhizobacterial volatile organic compounds (VOCs) play an important role in the suppression of soil-borne phytopathogens. In this study, the VOCs produced by a soil-isolate, Bacillus subtilis FA26, were evaluated in vitro for their antibacterial activity against Clavibacter michiganensis ssp. sepedonicus (Cms), the causal agent of bacterial ring rot of potato. The VOCs emitted by FA26 inhibited the growth of Cms significantly compared with the control. Scanning and transmission electron microscopy analyses revealed distorted colony morphology and a wide range of abnormalities in Cms cells exposed to the VOCs of FA26. Varying the inoculation strategy and inoculum size showed that the production and activity of the antibacterial VOCs of FA26 were dependent on the culture conditions. Headspace solid-phase microextraction/gas chromatography-mass spectrometry analyses revealed that FA26 produced 11 VOCs. Four VOCs (benzaldehyde, nonanal, benzothiazole and acetophenone) were associated with the antibacterial activity against Cms. The results suggested that the VOCs produced by FA26 could control the causal agent of bacterial ring rot of potato. This information will increase our understanding of the microbial interactions mediated by VOCs in nature and aid the development of safer strategies for controlling plant disease.
[Mh] Termos MeSH primário: Antibacterianos/farmacologia
Bacillus subtilis/metabolismo
Micrococcaceae/efeitos dos fármacos
Micrococcaceae/ultraestrutura
Compostos Orgânicos Voláteis/metabolismo
Compostos Orgânicos Voláteis/farmacologia
[Mh] Termos MeSH secundário: Acetofenonas/metabolismo
Acetofenonas/farmacologia
Aldeídos/metabolismo
Aldeídos/farmacologia
Antibacterianos/biossíntese
Benzaldeídos/metabolismo
Benzaldeídos/farmacologia
Benzotiazóis/metabolismo
Benzotiazóis/farmacologia
Cromatografia Gasosa-Espectrometria de Massas
Testes de Sensibilidade Microbiana
Micrococcaceae/crescimento & desenvolvimento
Doenças das Plantas/microbiologia
Nodulação/fisiologia
Microbiologia do Solo
Solanum tuberosum/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetophenones); 0 (Aldehydes); 0 (Anti-Bacterial Agents); 0 (Benzaldehydes); 0 (Benzothiazoles); 0 (Volatile Organic Compounds); 2L2WBY9K6T (nonanal); G5BW2593EP (benzothiazole); RK493WHV10 (acetophenone); TA269SD04T (benzaldehyde)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171009
[Lr] Data última revisão:
171009
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170419
[St] Status:MEDLINE
[do] DOI:10.1099/mic.0.000451


  10 / 590 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28384620
[Au] Autor:Centeno JA; Garabal JI; Docampo F; Lorenzo JM; Carballo J
[Ad] Endereço:Food Technology Area, Faculty of Science, University of Vigo, Ourense, Spain. Electronic address: jcenteno@uvigo.es.
[Ti] Título:Recovering traditional raw-milk Tetilla cheese flavour and sensory attributes by using Kocuria varians and Yarrowia lipolytica adjunct cultures.
[So] Source:Int J Food Microbiol;251:33-40, 2017 Jun 19.
[Is] ISSN:1879-3460
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The rationale of the present study was to evaluate the potential of microbial adjunct cultures including Kocuria varians and/or Yarrowia lipolytica strains in the recovery of the typical sensory profile of traditional (raw-milk) Tetilla cheese. Four batches of Tetilla cheese, a short ripened cows' milk cheese produced in Galicia (NW Spain), were made in duplicate from pasteurized milk inoculated with different microbial cultures. A control batch was manufactured by adding a mesophilic commercial D-starter only. The other three batches were made with the same starter after a cheese-milk pre-ripening step carried out with (i) an adjunct culture of K. varians, (ii) an adjunct culture of Y. lipolytica, or (iii) a combination of both adjunct cultures. The highest pH and water activity values, associated with softer textures were determined in the cheeses manufactured with the Y. lipolytica adjunct after 21days of ripening. The contents of the volatile compounds 3-methylbutanol, dimethyl disulfide and dimethyl trisulfide were higher in the cheeses made with only the K. varians adjunct than in the cheeses made with the only yeast adjunct and in the control cheeses. The contents of hexanoic and octanoic acids were highest in the cheeses made with the Y. lipolytica adjunct, and levels of ethyl hexanoate, ethyl octanoate and ethyl decanoate were higher in the cheeses made with only the yeast adjunct than in the other batches of cheese. The cheeses manufactured with both adjunct cultures were awarded the highest scores for flavour and overall sensory parameters (considering the standards of the traditional product) and were considered very similar to 'good quality' artisanal raw-milk cheeses. We conclude that use of selected Micrococcaceae and Y. lipolytica strains as adjunct cultures would differentiate the sensory properties and contribute to the quality and typicality of the short-ripened rennet-curd Galician Tetilla and Arzúa-Ulloa cheeses.
[Mh] Termos MeSH primário: Queijo/microbiologia
Aromatizantes/química
Micrococcaceae/metabolismo
Leite/microbiologia
Yarrowia/metabolismo
[Mh] Termos MeSH secundário: Animais
Caproatos/metabolismo
Caprilatos/metabolismo
Bovinos
Queijo/análise
Decanoatos/metabolismo
Fermentação
Aromatizantes/análise
Microbiologia de Alimentos
Leite/química
Espanha
Paladar
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Caproates); 0 (Caprylates); 0 (Decanoates); 0 (Flavoring Agents); 1F8SN134MX (hexanoic acid); 81C5MOP582 (ethyl caprylate); FLO6YR1SHT (ethyl hexanoate); GY39FB86UO (ethyl decanoate); OBL58JN025 (octanoic acid)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170928
[Lr] Data última revisão:
170928
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170407
[St] Status:MEDLINE



página 1 de 59 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde