Base de dados : MEDLINE
Pesquisa : G16.500.275.260 [Categoria DeCS]
Referências encontradas : 29 [refinar]
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  1 / 29 MEDLINE  
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[PMID]:28644827
[Au] Autor:Koenig WD
[Ad] Endereço:Lab of Ornithology, Cornell University, Ithaca, New York, United States of America.
[Ti] Título:What drives cooperative breeding?
[So] Source:PLoS Biol;15(6):e2002965, 2017 Jun.
[Is] ISSN:1545-7885
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cooperative breeding, in which more than a pair of conspecifics cooperate to raise young at a single nest or brood, is widespread among vertebrates but highly variable in its geographic distribution. Particularly vexing has been identifying the ecological correlates of this phenomenon, which has been suggested to be favored in populations inhabiting both relatively stable, productive environments and in populations living under highly variable and unpredictable conditions. Griesser et al. provide a novel approach to this problem, performing a phylogenetic analysis indicating that family living is an intermediate step between nonsocial and cooperative breeding birds. They then examine the ecological and climatic conditions associated with these different social systems, concluding that cooperative breeding emerges when family living is favored in highly productive environments, followed secondarily by selection for cooperative breeding when environmental conditions deteriorate and within-year variability increases. Combined with recent work addressing the fitness consequences of cooperative breeding, Griesser et al.'s contribution stands to move the field forward by demonstrating that the evolution of complex adaptations such as cooperative breeding may only be understood when each of the steps leading to it are identified and carefully integrated.
[Mh] Termos MeSH primário: Animais Selvagens/fisiologia
Comportamento Animal
Cruzamento
Comportamento de Nidação
Comportamento Social
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Aves
Processos Climáticos
Ecossistema
Ambientes Extremos
Feminino
Masculino
Filogenia
Especificidade da Espécie
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170829
[Lr] Data última revisão:
170829
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170624
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pbio.2002965


  2 / 29 MEDLINE  
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[PMID]:28539141
[Au] Autor:Corneliussen JG; Leon GR; Kjærgaard A; Fink BA; Venables NC
[Ti] Título:Individual Traits, Personal Values, and Conflict Resolution in an Isolated, Confined, Extreme Environment.
[So] Source:Aerosp Med Hum Perform;88(6):535-543, 2017 Jun 01.
[Is] ISSN:2375-6314
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The study of personality traits, personal values, and the emergence of conflicts within groups performing in an isolated, confined, and extreme environment (ICE) may provide insights helpful for the composition and support of space crews for long duration missions. METHODS: Studied pre/post and over the 2-yr period of the investigation were 10 Danish military personnel deployed to stations in Greenland on a 26-mo staggered rotation. Subjects completed the NEO PI-R, Triarchic Psychopathy Measure, and Portrait Values Questionnaire, and participated in structured interviews. During deployment, questionnaires were completed biweekly and a cognitive function test once a month. RESULTS: Personality findings indicated a generally well-adjusted group, above average in positive personality traits [Conscientiousness T-score = 59.4 (11.41); Agreeableness T-score = 54.4 (9.36)] and boldness. Personal values of benevolence and self-direction were highly rated. The decision when to "pick sides" and intervene during disagreements between group members was viewed as an important component of conflict resolution. There were no changes in positive/negative affect or cognitive function over the annual light/dark cycle. DISCUSSION: The personal values of group members appear highly compatible for living in a small group ICE environment for an extended period. Disagreements between group members impact the functioning of the entire group, particularly in regard to decisions whether to support one of the individuals or let the argument run its course. Extended training in strategies for conflict resolution are needed in planning for future long duration missions to avoid fault lines forming within the group.Corneliussen JG, Leon GR, Kjærgaard A, Fink BA, Venables NC. Individual traits, personal values, and conflict resolution in an isolated, confined, extreme environment. Aerosp Med Hum Perform. 2017; 88(6):535-543.
[Mh] Termos MeSH primário: Ambientes Extremos
Relações Interpessoais
Militares/psicologia
Negociação
Personalidade
Isolamento Social
Valores Sociais
[Mh] Termos MeSH secundário: Adulto
Cognição
Dinamarca
Processos Grupais
Seres Humanos
Masculino
Inquéritos e Questionários
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170731
[Lr] Data última revisão:
170731
[Sb] Subgrupo de revista:IM; S
[Da] Data de entrada para processamento:170526
[St] Status:MEDLINE
[do] DOI:10.3357/AMHP.4785.2017


  3 / 29 MEDLINE  
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[PMID]:28403641
[Au] Autor:Wang XY; Yan X; Fang MJ; Wu Z; Wang D; Qiu YK
[Ad] Endereço:a School of Pharmacy , Liaoning University of Traditional Chinese Medicine , Shenyang , China.
[Ti] Título:Two new cytochalasan derivatives from Chaetomium globosum SNSHI-5, a fungus derived from extreme environment.
[So] Source:Nat Prod Res;31(14):1669-1675, 2017 Jul.
[Is] ISSN:1478-6427
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Two new cytochalasan derivatives, isochaetoglobosin D (1) and cytoglobosin A (2), were isolated from an ethyl acetate extract of Chaetomium globosum SNSHI-5, a fungus derived from extreme environment. The structures of the new compounds were comprehensively characterized by HR-ESI-MS, H NMR, C NMR and 2D-NMR. Cytotoxic activity against H292 human lung cancer cell of the new compounds was tested. Isochaetoglobosin D (1) showed potent cytotoxicity with IC of 3.5 µM, while cytoglobosin A was inactive (IC > 10 µM).
[Mh] Termos MeSH primário: Chaetomium/química
Citocalasinas/isolamento & purificação
[Mh] Termos MeSH secundário: Antineoplásicos Fitogênicos/isolamento & purificação
Antineoplásicos Fitogênicos/farmacologia
Linhagem Celular Tumoral
Ambientes Extremos
Seres Humanos
Espectroscopia de Ressonância Magnética
Estrutura Molecular
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antineoplastic Agents, Phytogenic); 0 (Cytochalasins)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170414
[St] Status:MEDLINE
[do] DOI:10.1080/14786419.2017.1286478


  4 / 29 MEDLINE  
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[PMID]:28394904
[Au] Autor:Jirsová D; Stefka J; Jirku M
[Ad] Endereço:Faculty of Science, University of South Bohemia, Branisovská, Ceské Budejovice, Czech Republic.
[Ti] Título:Discordant population histories of host and its parasite: A role for ecological permeability of extreme environment?
[So] Source:PLoS One;12(4):e0175286, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Biogeographical and ecological barriers strongly affect the course of micro-evolutionary processes in free living organisms. Here we assess the impact of a recently emerged barrier on populations of limnic fauna. Genetic diversity and population structure in a host-parasite system (Wenyonia virilis tapeworm, Synodontis schall catfish) are analyzed in the recently divided Turkana and Nile basins. The two basins, were repeatedly connected during the Holocene wet/dry climatic oscillations, following late Pleistocene dessication of the Turkana basin. Mitochondrial DNA sequences for cytochrome oxidase I gene (cox I) and a whole genome scanning method-amplified fragment length polymorphism (AFLP) were employed. A total of 347 cox I sequences (representing 209 haplotypes) and 716 AFLP fragments, as well as 120 cox I sequences (20 haplotypes) and 532 AFLP fragments were obtained from parasites and hosts, respectively. Although results indicate that host and parasite populations share some formative traits (bottlenecks, Nilotic origin), their population histories/patterns differ markedly. Mitochondrial analysis revealed that parasite populations evolve significantly faster and show remarkably higher genetic variability. Analyses of both markers confirmed that the parasites undergo lineage fission, forming new clusters specific for either freshwater or saline parts of Lake Turkana. In congruence with the geological history, these clusters apparently indicate multiple colonisations of Lake Turkana from the Nile. In contrast, the host population pattern indicates fusion of different colonisation waves. Although fish host populations remain connected, saline habitats in Lake Turkana (absent in the Nile), apparently pose a barrier to the gene flow in the parasite, possibly due to its multihost lifecycle, which involves freshwater annelids. Despite partially corroborating mitochondrial results, AFLP data was not sufficiently informative for analyzing populations with recently mixed biogeographic histories.
[Mh] Termos MeSH primário: Peixes-Gato/genética
Peixes-Gato/parasitologia
Cestoides/genética
Evolução Molecular
Ambientes Extremos
Interações Hospedeiro-Parasita/genética
[Mh] Termos MeSH secundário: Animais
Infecções por Cestoides/genética
Infecções por Cestoides/parasitologia
Infecções por Cestoides/veterinária
DNA Mitocondrial
Ecossistema
Complexo IV da Cadeia de Transporte de Elétrons/genética
Doenças dos Peixes/genética
Doenças dos Peixes/parasitologia
Haplótipos
Proteínas de Helminto/genética
Quênia
Lagos
Modelos Teóricos
Filogenia
Polimorfismo Genético
Águas Salinas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial); 0 (Helminth Proteins); EC 1.9.3.1 (Electron Transport Complex IV)
[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:170411
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0175286


  5 / 29 MEDLINE  
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[PMID]:28390649
[Au] Autor:Kirkpatrick AW; McKee JL; Tien CH; LaPorta AJ; Lavell K; Leslie T; McBeth PB; Roberts DJ; Ball CG; Damage Control Surgery in Austere Environments Research Group (DCSAERG)
[Ad] Endereço:Canadian Forces Health Services, Nationwide, Canada; Department of Surgery, University of Calgary, Calgary, AB, Canada; Department of Critical Care Medicine, University of Calgary, Calgary, AB, Canada; The Regional Trauma Services Foothills Medical Centre, University of Calgary, Calgary, AB, Canada;
[Ti] Título:Abbreviated closure for remote damage control laparotomy in extreme environments: A randomized trial of sutures versus wound clamps comparing terrestrial and weightless conditions.
[So] Source:Am J Surg;213(5):862-869, 2017 May.
[Is] ISSN:1879-1883
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: Far-Forward Damage Control Laparotomies (DCLs) might provide direct-compression of visceral hemorrhage, however, suturing is a limiting factor, especially for non-physicians. We thus compared abbreviated skin closures comparing skin-suture (SS) versus wound-clamp (WC), on-board a research aircraft in weightlessness (0g) and normal gravity (1g). METHODS: Surgeons conducted DCLs on a surgical-simulator; onboard the hangered-aircraft (1g), or during parabolic flight (0g), randomized to either WC or SS. RESULTS: Ten surgeons participated. Two (40%) surgeons randomized to suture in 0g were incapacitated with motion-sickness, and none were able to close in either 1 or 0g. With WC, two completely closed in 1g as did three in 0g, despite having longer incisions (p = 0.016). Overall skin-closure with WC was significantly greater in both 1g (p = 0.016) and 0g (p = 0.008). CONCLUSIONS: WC was more effective in 1g and particularly 0g. Future studies should address the utility of abbreviated WC abdominal closure to facilitate potential Far-Forward DCL. TRIAL REGISTRATION: ID ISRCTN/77929274.
[Mh] Termos MeSH primário: Técnicas de Fechamento de Ferimentos Abdominais
Ambientes Extremos
Laparotomia
Técnicas de Sutura
Ausência de Peso
[Mh] Termos MeSH secundário: Técnicas de Fechamento de Ferimentos Abdominais/instrumentação
Adulto
Seres Humanos
Masculino
Modelos Anatômicos
Técnicas de Sutura/instrumentação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170807
[Lr] Data última revisão:
170807
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170410
[St] Status:MEDLINE


  6 / 29 MEDLINE  
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[PMID]:28346757
[Au] Autor:Sonuga-Barke EJ
[Ad] Endereço:Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology & Neuroscience, Kings College London, London, UK.
[Ti] Título:Commentary: Extraordinary environments, extreme neuroplasticity and mental disorder - reflections on pathways from adversity to mental disorder prompted by McCrory, Gerin, and Viding (2017).
[So] Source:J Child Psychol Psychiatry;58(4):358-360, 2017 Apr.
[Is] ISSN:1469-7610
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Neuroplasticity, the brain's capacity to be shaped in response to environmental experience, has been claimed to resemble a double-edged sword - potentiating growth and healing when individuals are exposed to normative, benign or therapeutic environments on the one hand, mediating mental disorder development in those exposed to adversity, on the other. However, questions about the scope and limits of neuroplasticity and, especially, its clinical significance, remain unanswered.
[Mh] Termos MeSH primário: Ambientes Extremos
Transtornos Psicóticos
[Mh] Termos MeSH secundário: Meio Ambiente
Seres Humanos
Plasticidade Neuronal
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171026
[Lr] Data última revisão:
171026
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170328
[St] Status:MEDLINE
[do] DOI:10.1111/jcpp.12726


  7 / 29 MEDLINE  
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[PMID]:28337070
[Au] Autor:Tighe S; Afshinnekoo E; Rock TM; McGrath K; Alexander N; McIntyre A; Ahsanuddin S; Bezdan D; Green SJ; Joye S; Stewart Johnson S; Baldwin DA; Bivens N; Ajami N; Carmical JR; Herriott IC; Colwell R; Donia M; Foox J; Greenfield N; Hunter T; Hoffman J; Hyman J; Jorgensen E; Krawczyk D; Lee J; Levy S; Garcia-Reyero N; Settles M; Thomas K; Gómez F; Schriml L; Kyrpides N; Zaikova E; Penterman J; Mason CE
[Ad] Endereço:Advanced Genomics Lab, University of Vermont Cancer Center, University of Vermont, Burlington, Vermont, USA.
[Ti] Título:Genomic Methods and Microbiological Technologies for Profiling Novel and Extreme Environments for the Extreme Microbiome Project (XMP).
[So] Source:J Biomol Tech;28(1):31-39, 2017 04.
[Is] ISSN:1943-4731
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Extreme Microbiome Project (XMP) is a project launched by the Association of Biomolecular Resource Facilities Metagenomics Research Group (ABRF MGRG) that focuses on whole genome shotgun sequencing of extreme and unique environments using a wide variety of biomolecular techniques. The goals are multifaceted, including development and refinement of new techniques for the following: 1) the detection and characterization of novel microbes, 2) the evaluation of nucleic acid techniques for extremophilic samples, and 3) the identification and implementation of the appropriate bioinformatics pipelines. Here, we highlight the different ongoing projects that we have been working on, as well as details on the various methods we use to characterize the microbiome and metagenome of these complex samples. In particular, we present data of a novel multienzyme extraction protocol that we developed, called Polyzyme or MetaPolyZyme. Presently, the XMP is characterizing sample sites around the world with the intent of discovering new species, genes, and gene clusters. Once a project site is complete, the resulting data will be publically available. Sites include Lake Hillier in Western Australia, the "Door to Hell" crater in Turkmenistan, deep ocean brine lakes of the Gulf of Mexico, deep ocean sediments from Greenland, permafrost tunnels in Alaska, ancient microbial biofilms from Antarctica, Blue Lagoon Iceland, Ethiopian toxic hot springs, and the acidic hypersaline ponds in Western Australia.
[Mh] Termos MeSH primário: Microbiologia Ambiental
Microbiota/genética
[Mh] Termos MeSH secundário: DNA Bacteriano/genética
DNA Bacteriano/isolamento & purificação
Ambientes Extremos
Metagenoma
Tipagem Molecular/normas
RNA Bacteriano/genética
RNA Bacteriano/isolamento & purificação
Padrões de Referência
Análise de Sequência de DNA/normas
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (DNA, Bacterial); 0 (RNA, Bacterial)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171113
[Lr] Data última revisão:
171113
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170325
[St] Status:MEDLINE
[do] DOI:10.7171/jbt.17-2801-004


  8 / 29 MEDLINE  
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[PMID]:28335808
[Au] Autor:Wu X; Pedersen K; Edlund J; Eriksson L; Åström M; Andersson AF; Bertilsson S; Dopson M
[Ad] Endereço:Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, 391 82, Kalmar, Sweden.
[Ti] Título:Potential for hydrogen-oxidizing chemolithoautotrophic and diazotrophic populations to initiate biofilm formation in oligotrophic, deep terrestrial subsurface waters.
[So] Source:Microbiome;5(1):37, 2017 Mar 23.
[Is] ISSN:2049-2618
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Deep terrestrial biosphere waters are separated from the light-driven surface by the time required to percolate to the subsurface. Despite biofilms being the dominant form of microbial life in many natural environments, they have received little attention in the oligotrophic and anaerobic waters found in deep bedrock fractures. This study is the first to use community DNA sequencing to describe biofilm formation under in situ conditions in the deep terrestrial biosphere. RESULTS: In this study, flow cells were attached to boreholes containing either "modern marine" or "old saline" waters of different origin and degree of isolation from the light-driven surface of the earth. Using 16S rRNA gene sequencing, we showed that planktonic and attached populations were dissimilar while gene frequencies in the metagenomes suggested that hydrogen-fed, carbon dioxide- and nitrogen-fixing populations were responsible for biofilm formation across the two aquifers. Metagenome analyses further suggested that only a subset of the populations were able to attach and produce an extracellular polysaccharide matrix. Initial biofilm formation is thus likely to be mediated by a few bacterial populations which were similar to Epsilonproteobacteria, Deltaproteobacteria, Betaproteobacteria, Verrucomicrobia, and unclassified bacteria. CONCLUSIONS: Populations potentially capable of attaching to a surface and to produce extracellular polysaccharide matrix for attachment were identified in the terrestrial deep biosphere. Our results suggest that the biofilm populations were taxonomically distinct from the planktonic community and were enriched in populations with a chemolithoautotrophic and diazotrophic metabolism coupling hydrogen oxidation to energy conservation under oligotrophic conditions.
[Mh] Termos MeSH primário: Betaproteobacteria/genética
Biofilmes/classificação
Crescimento Quimioautotrófico/genética
Deltaproteobacteria/genética
Epsilonproteobacteria/genética
Fixação de Nitrogênio/genética
Verrucomicrobia/genética
[Mh] Termos MeSH secundário: Betaproteobacteria/classificação
Crescimento Quimioautotrófico/fisiologia
Deltaproteobacteria/classificação
Epsilonproteobacteria/classificação
Ambientes Extremos
Água Subterrânea/microbiologia
Hidrogênio/química
Metagenoma
Fixação de Nitrogênio/fisiologia
Oceanos e Mares
Oxirredução
Filogenia
RNA Ribossômico 16S/genética
Análise de Sequência de DNA
Verrucomicrobia/classificação
Microbiologia da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 16S); 7YNJ3PO35Z (Hydrogen)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170626
[Lr] Data última revisão:
170626
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170325
[St] Status:MEDLINE
[do] DOI:10.1186/s40168-017-0253-y


  9 / 29 MEDLINE  
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[PMID]:28007977
[Au] Autor:Xu J; Li JT; Jiang Y; Peng W; Yao Z; Chen B; Jiang L; Feng J; Ji P; Liu G; Liu Z; Tai R; Dong C; Sun X; Zhao ZX; Zhang Y; Wang J; Li S; Zhao Y; Yang J; Sun X; Xu P
[Ad] Endereço:Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China.
[Ti] Título:Genomic Basis of Adaptive Evolution: The Survival of Amur Ide (Leuciscus waleckii) in an Extremely Alkaline Environment.
[So] Source:Mol Biol Evol;34(1):145-159, 2017 Jan.
[Is] ISSN:1537-1719
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Amur ide (Leuciscus waleckii) is a cyprinid fish that is widely distributed in Northeast Asia. The Lake Dali Nur population inhabits one of the most extreme aquatic environments on Earth, with an alkalinity up to 50 mmol/L (pH 9.6), thus providing an exceptional model with which to characterize the mechanisms of genomic evolution underlying adaptation to extreme environments. Here, we developed the reference genome assembly for L. waleckii from Lake Dali Nur. Intriguingly, we identified unusual expanded long terminal repeats (LTRs) with higher nucleotide substitution rates than in many other teleosts, suggesting their more recent insertion into the L. waleckii genome. We also identified expansions in genes encoding egg coat proteins and natriuretic peptide receptors, possibly underlying the adaptation to extreme environmental stress. We further sequenced the genomes of 10 additional individuals from freshwater and 18 from Lake Dali Nur populations, and we detected a total of 7.6 million SNPs from both populations. In a genome scan and comparison of these two populations, we identified a set of genomic regions under selective sweeps that harbor genes involved in ion homoeostasis, acid-base regulation, unfolded protein response, reactive oxygen species elimination, and urea excretion. Our findings provide comprehensive insight into the genomic mechanisms of teleost fish that underlie their adaptation to extreme alkaline environments.
[Mh] Termos MeSH primário: Adaptação Fisiológica/genética
Evolução Biológica
Cyprinidae/genética
[Mh] Termos MeSH secundário: Animais
Ásia
Evolução Molecular
Ambientes Extremos
Feminino
Perfilação da Expressão Gênica/métodos
Estudos de Associação Genética
Genômica/métodos
Concentração de Íons de Hidrogênio
Lagos
Análise de Sequência de DNA/métodos
Estresse Fisiológico/genética
Transcriptoma
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170714
[Lr] Data última revisão:
170714
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161224
[St] Status:MEDLINE
[do] DOI:10.1093/molbev/msw230


  10 / 29 MEDLINE  
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[PMID]:27535833
[Au] Autor:Lara-Victoriano F; Veana F; Hernández-Castillo FD; Aguilar CN; Reyes-Valdés MH; Rodríguez-Herrera R
[Ad] Endereço:Food Research Department, Universidad Autónoma de Coahuila, 25280, Saltillo, Coahuila, Mexico.
[Ti] Título:Variability among strains of Aspergillus section Nigri with capacity to degrade tannic acid isolated from extreme environments.
[So] Source:Arch Microbiol;199(1):77-84, 2017 Jan.
[Is] ISSN:1432-072X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Tannins are polyphenolic compounds that cause astringent flavor and turbidity in food. Tannase is an enzyme that catalyzes the hydrolysis of tannins and is used in food industry. This study was conducted to determine the genetic variability and the tannase alleles variation in fungal strains isolated from soil and plants at five extreme areas of Coahuila, México. Two screening assays under 1 and 20 % of tannic acid were performed, with the isolations. In these assays, it was possible to identify 756 and 128 fungal strains, respectively. The major fungal variability was observed in "Cuatro Ciénegas" with 26 strains. The microorganisms were distributed in 11 groups, which correspond to Aspergillus section Nigri. AN7 and AN1 groups showed the major number of isolates from "Paila" and "Cuatro Ciénegas" locations, respectively. In the last location, the major diversity and specific richness were found. But in "Ojo Caliente," tannase allele conservations were observed.
[Mh] Termos MeSH primário: Aspergillus/isolamento & purificação
Aspergillus/metabolismo
Taninos/metabolismo
[Mh] Termos MeSH secundário: Aspergillus/enzimologia
Aspergillus/genética
Hidrolases de Éster Carboxílico/genética
Hidrolases de Éster Carboxílico/metabolismo
Ambientes Extremos
Proteínas Fúngicas/genética
Proteínas Fúngicas/metabolismo
México
Plantas/microbiologia
Microbiologia do Solo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fungal Proteins); 0 (Tannins); EC 3.1.1.- (Carboxylic Ester Hydrolases); EC 3.1.1.20 (tannase)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160819
[St] Status:MEDLINE
[do] DOI:10.1007/s00203-016-1277-6



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