Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.157.200.277 [Categoria DeCS]
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  1 / 1390 MEDLINE  
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[PMID]:29353700
[Au] Autor:Nawaz T; Ahmad N; Ali S; Khan M; Fazal H; Khalil SA
[Ad] Endereço:Centre for Biotechnology and Microbiology, University of Swat, Swat 19200, Pakistan.
[Ti] Título:Developmental variation during seed germination and biochemical responses of Brassica rapa exposed to various colored lights.
[So] Source:J Photochem Photobiol B;179:113-118, 2018 Feb.
[Is] ISSN:1873-2682
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Light acting as elicitor or stress inducer, it plays a pivotal role in all developmental processes of plant providing necessary building blocks for growth and primary and secondary metabolites production. The main objective of the current study was to investigate the individual effect of colored lights on developmental processes and production of polyphenolics contents in Brassica rapa. In this study, the red and white lights (control) were found to be the most effective sources for seed germination (91%) in Brassica rapa. Similarly, red light enhanced radicle growth (102 mm), while green light suppressed radicle growth (60 mm) as compared to control (67 mm). The red light also promoted the plumule growth (50 mm) as compared to control (37 mm). The maximum biomass gain (67 mg) was observed under red light as compared to control (55 mg). Currently, the maximum total phenolics content (9.49 mg/g-DW) and phenolics production (379.616 mg/L) was observed under the influence of blue lights as compared to control (0.23 mg/g-DW and 8.91 mg/L). Similarly, the blue lights also enhanced the biosynthesis of total flavonoids content (2.2611 mg/g-DW) and flavonoids production (90.44 mg/L) as compared to control (0.0318 md/g-DW and 0.8268 mg/L). The current results represents that red and blue lights are the most effective sources for plantlets development and production of polyphenolics content in Brassica rapa.
[Mh] Termos MeSH primário: Brassica rapa/crescimento & desenvolvimento
Germinação/efeitos da radiação
[Mh] Termos MeSH secundário: Biomassa
Brassica rapa/metabolismo
Brassica rapa/efeitos da radiação
Flavonoides/metabolismo
Luz
Fenóis/metabolismo
Polifenóis/metabolismo
Sementes/crescimento & desenvolvimento
Sementes/metabolismo
Sementes/efeitos da radiação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Flavonoids); 0 (Phenols); 0 (Polyphenols)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180123
[St] Status:MEDLINE


  2 / 1390 MEDLINE  
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[PMID]:29324881
[Au] Autor:Yan G; Xiao X; Wang N; Zhang F; Gao G; Xu K; Chen B; Qiao J; Wu X
[Ad] Endereço:Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan, P. R. China.
[Ti] Título:Genome-wide analysis and expression profiles of glyoxalase gene families in Chinese cabbage (Brassica rapa L).
[So] Source:PLoS One;13(1):e0191159, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The glyoxalase pathway is composed of glyoxalase I (GLYI) and glyoxalase II (GLYII) and is responsible for the detoxification of a cytotoxic metabolite methylglyoxal (MG) into the nontoxic S-D-lactoylglutathione. The two glyoxalase enzymes play a crucial role in stress tolerance in various plant species. Recently, the GLY gene families have well been analyzed in Arabidopsis, rice and soybean, however, little is known about them in Chinese cabbage (Brassica rapa). Here, 16 BrGLYI and 15 BrGLYII genes were identified in the B. rapa genome, and the BrGLYI and BrGLYII proteins were both clustered into five subfamilies. The classifications, chromosomal distributions, gene duplications, exon-intron structures, localizations, conserved motifs and promoter cis-elements were also predicted and analyzed. In addition, the expression pattern of these genes in different tissues and their response to biotic and abiotic stresses were analyzed using publicly available data and a quantitative real-time PCR analysis (RT-qPCR). The results indicated that the expression profiles of BrGLY genes varied among different tissues. Notably, a number of BrGLY genes showed responses to biotic and abiotic stress treatments, including Plasmodiophora brassicae infection and various heavy metal stresses. Taken together, this study identifies BrGLYI and BrGLYII gene families in B. rapa and offers insight into their roles in plant development and stress resistance, especially in heavy metal stress tolerance and pathogen resistance.
[Mh] Termos MeSH primário: Brassica rapa/genética
Perfilação da Expressão Gênica
Lactoilglutationa Liase/genética
[Mh] Termos MeSH secundário: Genes de Plantas
Lactoilglutationa Liase/classificação
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
EC 4.4.1.5 (Lactoylglutathione Lyase)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180112
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191159


  3 / 1390 MEDLINE  
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[PMID]:29264921
[Au] Autor:Joehnke MS; Rehder A; Sørensen S; Bjergegaard C; Sørensen JC; Markedal KE
[Ad] Endereço:Department of Food Science, Faculty of Science, University of Copenhagen , Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark.
[Ti] Título:In Vitro Digestibility of Rapeseed and Bovine Whey Protein Mixtures.
[So] Source:J Agric Food Chem;66(3):711-719, 2018 Jan 24.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Partial replacement of animal protein sources with plant proteins is highly relevant for the food industry, but potential effects on protein digestibility need to be established. In this study, the in vitro protein digestibility (IVPD) of four protein sources and their mixtures (50:50 w/w ratio) was investigated using a transient pepsin hydrolysis (1 h) followed by pancreatin (1 h). The protein sources consisted of napin-rich rapeseed (Brassica napus L.) protein concentrates (RPCs; RP1, RP2) prepared in pilot scale and major bovine whey proteins (WPs; α-LA, alpha-lactalbumin; ß-LG, beta-lactoglobulin). IVPD of individual protein sources was higher for WPs compared to RPCs. The RP2/ß-LG mixture resulted in an unexpected high IVPD equivalent to ß-LG protein alone. Protein mixtures containing RP1 showed a new IVPD response type due to the negative influence of a high trypsin inhibitor activity (TIA) level. Improved IVPD of RP1 alone and in protein mixtures was obtained by lowering the TIA level using dithiothreitol (DTT). These results showed that napin-rich protein products prepared by appropriate processing can be combined with specific WPs in mixtures to improve the IVPD.
[Mh] Termos MeSH primário: Ração Animal/análise
Brassica rapa/química
Bovinos/metabolismo
Proteínas de Plantas/química
Proteínas do Soro do Leite/química
[Mh] Termos MeSH secundário: Animais
Digestão
Concentração de Íons de Hidrogênio
Hidrólise
Pepsina A/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins); 0 (Whey Proteins); EC 3.4.23.1 (Pepsin A)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180207
[Lr] Data última revisão:
180207
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171222
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b04681


  4 / 1390 MEDLINE  
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[PMID]:29202713
[Au] Autor:Shea DJ; Shimizu M; Nishida N; Fukai E; Abe T; Fujimoto R; Okazaki K
[Ad] Endereço:Laboratory of Plant Breeding, Graduate School of Science and Technology, Niigata University, Ikarashi-ninocho, Niigata, 950-2181, Japan.
[Ti] Título:IntroMap: a signal analysis based method for the detection of genomic introgressions.
[So] Source:BMC Genet;18(1):101, 2017 Dec 04.
[Is] ISSN:1471-2156
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Breeding programs often rely on marker-assisted tests or variant calling of next generation sequence (NGS) data to identify regions of genomic introgression arising from the hybridization of two plant species. In this paper we present IntroMap, a bioinformatics pipeline for the screening of candidate plants through the application of signal processing techniques to NGS data, using alignment to a reference genome sequence (annotation is not required) that shares homology with the recurrent parental cultivar, and without the need for de novo assembly of the read data or variant calling. RESULTS: We show the accurate identification of introgressed genomic regions using both in silico simulated genomes, and a hybridized cultivar data set using our pipeline. Additionally we show, through targeted marker-based assays, validation of the IntroMap predicted regions for the hybrid cultivar. CONCLUSIONS: This approach can be used to automate the screening of large populations, reducing the time and labor required, and can improve the accuracy of the detection of introgressed regions in comparison to a marker-based approach. In contrast to other approaches that generally rely upon a variant calling step, our method achieves accurate identification of introgressed regions without variant calling, relying solely upon alignment.
[Mh] Termos MeSH primário: Brassica rapa/genética
Genoma de Planta
Software
[Mh] Termos MeSH secundário: Algoritmos
Brassica/classificação
Brassica/genética
Cruzamento
Simulação por Computador
Curva ROC
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180110
[Lr] Data última revisão:
180110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171206
[St] Status:MEDLINE
[do] DOI:10.1186/s12863-017-0568-5


  5 / 1390 MEDLINE  
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[PMID]:29173209
[Au] Autor:Cowieson AJ; Roos FF; Ruckebusch JP; Wilson JW; Guggenbuhl P; Lu H; Ajuwon KM; Adeola O
[Ad] Endereço:1DSM Nutritional Products,Wurmisweg 576,4303 Kaiseraugst,Switzerland.
[Ti] Título:Time-series responses of swine plasma metabolites to ingestion of diets containing myo-inositol or phytase.
[So] Source:Br J Nutr;118(11):897-905, 2017 Dec.
[Is] ISSN:1475-2662
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The effect of the ingestion of diets containing either myo-inositol or exogenous phytase on plasma metabolites was examined using 29 kg barrows. The diets were: control (maize, soya, rapeseed, rice bran), control plus 2 g/kg myo-inositol, control plus 1000 phytase units (FYT)/kg or 3000 FYT/kg exogenous phytase. Pigs were housed in a PigTurn device and blood was collected, from jugular catheters, via an automated system at -30, (30 min before feeding), 0, 15, 30, 45, 60, 90, 120, 150, 180, 240, 300 and 360 min post-feeding. The addition of 2 g/kg myo-inositol to the basal diet resulted in an increase in plasma myo-inositol concentration that was evident 45-60 min after diet introduction and persisted to 360 min post-feeding. Similarly, supplementation of the basal diet with either 1000 or 3000 FYT/kg exogenous phytase resulted in an increase in plasma myo-inositol concentration that was still rising 360 min post-feeding. Plasma P concentration was increased over time by the addition of 1000 and 3000 FYT/kg phytase, but not by the addition of myo-inositol. Other plasma metabolites examined were not affected by dietary treatment. It can be concluded that oral delivery of myo-inositol results in rapid increase in plasma myo-inositol concentrations that peak approximately 45-60 min after feeding. Use of supplemental phytase achieves similar increases in myo-inositol concentration in plasma but the appearance is more gradual. Furthermore, supplementation of pig diets with exogenous phytase results in rapid appearance of P in plasma that may be sustained over time relative to diets with no added phytase.
[Mh] Termos MeSH primário: 6-Fitase/administração & dosagem
Fenômenos Fisiológicos da Nutrição Animal
Dieta/veterinária
Inositol/administração & dosagem
[Mh] Termos MeSH secundário: 6-Fitase/sangue
Fosfatase Alcalina/sangue
Ração Animal
Animais
Brassica rapa
Fibras na Dieta/administração & dosagem
Suplementos Nutricionais
Inositol/sangue
Feijão de Soja
Suínos
Zea mays
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dietary Fiber); 4L6452S749 (Inositol); EC 3.1.3.1 (Alkaline Phosphatase); EC 3.1.3.26 (6-Phytase)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171218
[Lr] Data última revisão:
171218
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE
[do] DOI:10.1017/S0007114517003026


  6 / 1390 MEDLINE  
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[PMID]:28873576
[Au] Autor:Pohl F; Goua M; Bermano G; Russell WR; Scobbie L; Maciel P; Kong Thoo Lin P
[Ad] Endereço:School of Pharmacy and Life Science, Robert Gordon University, Aberdeen AB10 1GJ, Scotland, United Kingdom.
[Ti] Título:Revalorisation of rapeseed pomace extracts: An in vitro study into its anti-oxidant and DNA protective properties.
[So] Source:Food Chem;239:323-332, 2018 Jan 15.
[Is] ISSN:0308-8146
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Rapeseed pomace (RSP) is a waste product obtained after edible oil production from Brassica napus. Analysis of ubiquitous secondary metabolites in RSP samples (two breeds, harvested in 2012/2014 respectively from North East of Scotland) and their ethanol/water (95:5) Soxhlet extracts were carried out. Soxhlet extraction of the RSP (petroleum ether followed by 95% ethanol) gave a solid extract. LC-MS/MS data of the extracts revealed several secondary metabolites, with Sinapic acid being the most abundant. Strong antioxidant activities of the Soxhlet extracts were confirmed from the results obtained in the FRAP, DPPH and ORAC assays. Furthermore, for the very first time, RSP extracts (13.9µg/ml) provided complete DNA protection, from oxidative stress induced by AAPH (3.5mM). Therefore the strong antioxidant and DNA protecting properties demonstrated by the RSP extracts in this study warrants further investigation for their revalorisation and potential use as reliable source of antioxidants in different food applications.
[Mh] Termos MeSH primário: Brassica rapa
[Mh] Termos MeSH secundário: Antioxidantes
DNA de Plantas
Oxidantes
Extratos Vegetais
Sementes
Espectrometria de Massas em Tandem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (DNA, Plant); 0 (Oxidants); 0 (Plant Extracts)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170907
[St] Status:MEDLINE


  7 / 1390 MEDLINE  
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[PMID]:28452124
[Au] Autor:Sghaier L; Cordella CBY; Rutledge DN; Lefèvre F; Watiez M; Breton S; Sassiat P; Thiebaut D; Vial J
[Ad] Endereço:Lesieur, R&D Center ESPCI ParisTech - CNRS, Coudekerque-Branche, France.
[Ti] Título:Synergetic Use of Principal Component Analysis Applied to Normed Physicochemical Measurements and GC × GC-MS to Reveal the Stabilization Effect of Selected Essential Oils on Heated Rapeseed Oil.
[So] Source:J Food Sci;82(6):1333-1343, 2017 Jun.
[Is] ISSN:1750-3841
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Lipid oxidation leads to the formation of volatile compounds and very often to off-flavors. In the case of the heating of rapeseed oil, unpleasant odors, characterized as a fishy odor, are emitted. In this study, 2 different essential oils (coriander and nutmeg essential oils) were added to refined rapeseed oil as odor masking agents. The aim of this work was to determine a potential antioxidant effect of these essential oils on the thermal stability of rapeseed oil subject to heating cycles between room temperature and 180 °C. For this purpose, normed determinations of different parameters (peroxide value, anisidine value, and the content of total polar compounds, free fatty acids and tocopherols) were carried out to examine the differences between pure and degraded oil. No significant difference was observed between pure rapeseed oil and rapeseed oil with essential oils for each parameter separately. However, a stabilizing effect of the essential oils, with a higher effect for the nutmeg essential oil was highlighted by principal component analysis applied on physicochemical dataset. Moreover, the analysis of the volatile compounds performed by GC × GC showed a substantial loss of the volatile compounds of the essential oils from the first heating cycle.
[Mh] Termos MeSH primário: Brassica rapa/química
Óleo de Canola/química
Óleos Vegetais/química
Sementes/química
[Mh] Termos MeSH secundário: Ácidos Graxos Monoinsaturados
Cromatografia Gasosa-Espectrometria de Massas
Óleos Voláteis/química
Análise de Componente Principal
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Canola Oil); 0 (Fatty Acids, Monounsaturated); 0 (Oils, Volatile); 0 (Plant Oils)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1111/1750-3841.13712


  8 / 1390 MEDLINE  
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[PMID]:28450111
[Au] Autor:Li Y; Wang D; Sun C; Hu X; Mu X; Hu J; Yang Y; Zhang Y; Xie CG; Zhou X
[Ad] Endereço:State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
[Ti] Título:Molecular characterization of an AtPYL1-like protein, BrPYL1, as a putative ABA receptor in Brassica rapa.
[So] Source:Biochem Biophys Res Commun;487(3):684-689, 2017 06 03.
[Is] ISSN:1090-2104
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Abscisic acid (ABA)-induced physiological changes are conserved in many land plants and underlie their responses to environmental stress and pathogens. The PYRABACTIN RESISTANCE1/PYR1-LIKE/REGULATORY COMPONENTS OF ABA RECEPTORS (PYLs)-type receptors perceive the ABA signal and initiate signal transduction. Here, we show that the genome of Brassica rapa encodes 24 putative AtPYL-like proteins. The AtPYL-like proteins in Brassica rapa (BrPYLs) can also be classified into 3 subclasses. We found that nearly all BrPYLs displayed high expression in at least one tissue. Overexpression of BrPYL1 conferred ABA hypersensitivity to Arabidopsis. Further, ABA activated the expression of an ABA-responsive reporter in Arabidopsis protoplasts expressing BrPYL1. Overall, these results suggest that BrPYL1 is a putative functional ABA receptor in Brassica rapa.
[Mh] Termos MeSH primário: Ácido Abscísico/genética
Proteínas de Arabidopsis/genética
Arabidopsis/genética
Brassica rapa/genética
Receptores de Superfície Celular/genética
[Mh] Termos MeSH secundário: Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Receptors, Cell Surface); 72S9A8J5GW (Abscisic Acid)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE


  9 / 1390 MEDLINE  
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[PMID]:28950015
[Au] Autor:Hu M; Pu H; Gao J; Long W; Chen F; Zhang W; Zhou X; Peng Q; Chen S; Zhang J
[Ad] Endereço:Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences / Nanjing Sub-center, National Center of Oil Crops Improvement / Key Laboratory of Cotton and Rapeseed (Nanjing), Ministry of Agriculture, Nanjing, China.
[Ti] Título:Comparative analysis of miRNAs of two rapeseed genotypes in response to acetohydroxyacid synthase-inhibiting herbicides by high-throughput sequencing.
[So] Source:PLoS One;12(9):e0184917, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Acetohydroxyacid synthase (AHAS), also called acetolactate synthase, is a key enzyme involved in the first step of the biosynthesis of the branched-chain amino acids valine, isoleucine and leucine. Acetohydroxyacid synthase-inhibiting herbicides (AHAS herbicides) are five chemical families of herbicides that inhibit AHAS enzymes, including imidazolinones (IMI), sulfonylureas (SU), pyrimidinylthiobenzoates, triazolinones and triazolopyrimidines. Five AHAS genes have been identified in rapeseed, but little information is available regarding the role of miRNAs in response to AHAS herbicides. In this study, an AHAS herbicides tolerant genotype and a sensitive genotype were used for miRNA comparative analysis. A total of 20 small RNA libraries were obtained of these two genotypes at three time points (0h, 24 h and 48 h) after spraying SU and IMI herbicides with two replicates. We identified 940 conserved miRNAs and 1515 novel candidate miRNAs in Brassica napus using high-throughput sequencing methods combined with computing analysis. A total of 3284 genes were predicted to be targets of these miRNAs, and their functions were shown using GO, KOG and KEGG annotations. The differentiation expression results of miRNAs showed almost twice as many differentiated miRNAs were found in tolerant genotype M342 (309 miRNAs) after SU herbicide application than in sensitive genotype N131 (164 miRNAs). In additiond 177 and 296 miRNAs defined as differentiated in sensitive genotype and tolerant genotype in response to SU herbicides. The miR398 family was observed to be associated with AHAS herbicide tolerance because their expression increased in the tolerant genotype but decreased in the sensitive genotype. Moreover, 50 novel miRNAs from 39 precursors were predicted. There were 8 conserved miRNAs, 4 novel miRNAs and 3 target genes were validated by quantitative real-time PCR experiment. This study not only provides novel insights into the miRNA content of AHAS herbicides tolerant rapeseed in response to AHAS herbicides, but also demonstrates that miRNAs may be involved in AHAS herbicides tolerance.
[Mh] Termos MeSH primário: Acetolactato Sintase/antagonistas & inibidores
Brassica rapa/genética
Herbicidas/farmacologia
Sequenciamento de Nucleotídeos em Larga Escala/métodos
MicroRNAs/genética
[Mh] Termos MeSH secundário: Acetolactato Sintase/metabolismo
Genótipo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Herbicides); 0 (MicroRNAs); EC 2.2.1.6 (Acetolactate Synthase)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170927
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184917


  10 / 1390 MEDLINE  
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[PMID]:28841712
[Au] Autor:Juhel AS; Barbu CM; Franck P; Roger-Estrade J; Butier A; Bazot M; Valantin-Morison M
[Ad] Endereço:UMR Agronomie, INRA, AgroParisTech, Université Paris-Saclay, Thiverval-Grignon, France.
[Ti] Título:Characterization of the pollen beetle, Brassicogethes aeneus, dispersal from woodlands to winter oilseed rape fields.
[So] Source:PLoS One;12(8):e0183878, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Many crop pests rely on resources out of crop fields; understanding how they colonize the fields is an important factor to develop integrated pest management. In particular, the time of crop colonization and damage severity might be determined by pest movements between fields and non-crop areas. Notably, the pollen beetle, Brassicogethes aeneus, previously named Meligethes aeneus, one of the most important pests of winter oilseed rape, overwinters in woodlands. As a result, its abundance increases in oilseed rape fields near wooded areas. Here, we assessed the spatio-temporal patterns of the dispersal from woodlands to oilseed rape fields in diversified landscapes of a same region. We observed on four dates the abundance of pollen beetles in 24 fields spread in the Eure department, France. We modeled the abundance as a result of the dispersal from the neighboring woodlands. We compared the modalities of dispersal corresponding to different hypotheses on the dispersal origin, kernel shape and sources of variability. Within oilseed rape the distance to the edges of woodlands is not the main determinant of pollen beetle abundance. On the contrary, the variability of the abundance between fields is largely explained by the dispersal from neighboring woodlands but there is considerable variability between dates, sites and, to a lesser extent, between fields. The two dispersal kernels received similar support from the data and lead to similar conclusions. The mean dispersal distance is 1.2 km but seems to increase from a few hundred meters the first week to more than two kilometers the fourth, allowing the pollen beetles to reach more distant OSR fields. These results suggest that early varieties away from woodlands and late varieties close to the woodlands may limit attacks at the time when oilseed rape is the most sensitive.
[Mh] Termos MeSH primário: Brassica rapa
Coleópteros/fisiologia
Produtos Agrícolas
Comportamento Alimentar
Florestas
[Mh] Termos MeSH secundário: Animais
Coleópteros/genética
França
Modelos Teóricos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170826
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0183878



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