Base de dados : MEDLINE
Pesquisa : A18.024.249 [Categoria DeCS]
Referências encontradas : 194 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 20 ir para página                         

  1 / 194 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28945821
[Au] Autor:Lee YS; Ku KM; Becker TM; Juvik JA
[Ad] Endereço:Department of Medical Biotechnology, Soonchunhyang University, Asan, South Korea.
[Ti] Título:Chemopreventive glucosinolate accumulation in various broccoli and collard tissues: Microfluidic-based targeted transcriptomics for by-product valorization.
[So] Source:PLoS One;12(9):e0185112, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Floret, leaf, and root tissues were harvested from broccoli and collard cultivars and extracted to determine their glucosinolate and hydrolysis product profiles using high performance liquid chromatography and gas chromotography. Quinone reductase inducing bioactivity, an estimate of anti-cancer chemopreventive potential, of the extracts was measured using a hepa1c1c7 murine cell line. Extracts from root tissues were significantly different from other tissues and contained high levels of gluconasturtiin and glucoerucin. Targeted gene expression analysis on glucosinolate biosynthesis revealed that broccoli root tissue has elevated gene expression of AOP2 and low expression of FMOGS-OX homologs, essentially the opposite of what was observed in broccoli florets, which accumulated high levels of glucoraphanin. Broccoli floret tissue has significantly higher nitrile formation (%) and epithionitrile specifier protein gene expression than other tissues. This study provides basic information of the glucosinolate metabolome and transcriptome for various tissues of Brassica oleracea that maybe utilized as potential byproducts for the nutraceutical market.
[Mh] Termos MeSH primário: Anticarcinógenos/metabolismo
Brassica/genética
Brassica/metabolismo
Glucosinolatos/genética
Glucosinolatos/metabolismo
[Mh] Termos MeSH secundário: Anticarcinógenos/análise
Brassica/química
Suplementos Nutricionais/análise
Topos Floridos/metabolismo
Perfilação da Expressão Gênica
Genes de Plantas
Glucose/análogos & derivados
Glucose/análise
Glucose/genética
Glucose/metabolismo
Glucosinolatos/análise
Seres Humanos
Hidrólise
Imidoésteres/análise
Imidoésteres/metabolismo
Metaboloma
Técnicas Analíticas Microfluídicas
NAD(P)H Desidrogenase (Quinona)/biossíntese
Folhas de Planta/metabolismo
Proteínas de Plantas/biossíntese
Raízes de Plantas/metabolismo
RNA de Plantas/genética
RNA de Plantas/metabolismo
Distribuição Tecidual
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anticarcinogenic Agents); 0 (Glucosinolates); 0 (Imidoesters); 0 (Plant Proteins); 0 (RNA, Plant); 163ENC977A (gluconasturtiin); 21973-56-8 (glucoerucin); EC 1.6.5.2 (NAD(P)H Dehydrogenase (Quinone)); IY9XDZ35W2 (Glucose)
[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:170926
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185112


  2 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27098241
[Au] Autor:Vujovic D; Maletic R; Popovic-Dordevic J; Pejin B; Ristic R
[Ad] Endereço:Faculty of Agriculture, University of Belgrade, 11080, Belgrade, Zemun, Serbia.
[Ti] Título:Viticultural and chemical characteristics of Muscat Hamburg preselected clones grown for table grapes.
[So] Source:J Sci Food Agric;97(2):587-594, 2017 Jan.
[Is] ISSN:1097-0010
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Clonal selection is one of the tools used for grapevine improvement and therefore is very important for obtaining clones with better characteristics than the variety population. The aim of this study was to select superior grapevines of Vitis vinifera L. cv. Muscat Hamburg grown for fresh consumption. RESULTS: The viticultural parameters and fruit composition of 35 selected vines were determined during a 5-year period. The evaluated parameters showed high variability among selected vines. The significant effect of vintage was observed for all descriptors with the exception of the number of seeds per berry and sugar concentration. Additionally, all vines were examined for their tolerance to low temperatures and the results showed 73% and 90% of primary bud injury at -20 and -25 °C, respectively. In relation to berry classification, the percentage of first-class grapes ranged from 60% to 69% for all selected grapevines. Multivariate statistical analysis was performed to classify grapevines based on their performance. CONCLUSION: Fourteen grapevines were identified as the most promising among the 35 vines initially planted, based on high yield, bunch and berry weight, sugar content and percentage of first-grade grapes. Those grapevines were selected for the next phase of the clonal selection. This study highlighted the importance of clonal selection for improvement of the variety population. © 2016 Society of Chemical Industry.
[Mh] Termos MeSH primário: Produção Agrícola
Produtos Agrícolas/química
Carboidratos da Dieta/análise
Qualidade dos Alimentos
Frutas/química
Melhoramento Vegetal
Vitis/química
[Mh] Termos MeSH secundário: Aclimatação
Análise por Conglomerados
Temperatura Baixa/efeitos adversos
Produtos Agrícolas/classificação
Produtos Agrícolas/crescimento & desenvolvimento
Produtos Agrícolas/metabolismo
Cruzamentos Genéticos
Dissacarídeos/análise
Dissacarídeos/biossíntese
Topos Floridos/classificação
Topos Floridos/crescimento & desenvolvimento
Frutas/classificação
Frutas/crescimento & desenvolvimento
Frutas/metabolismo
Seres Humanos
Análise Multivariada
Valor Nutritivo
Epiderme Vegetal/crescimento & desenvolvimento
Caules de Planta/crescimento & desenvolvimento
Análise de Componente Principal
Estações do Ano
Sementes/crescimento & desenvolvimento
Sérvia
Vitis/classificação
Vitis/crescimento & desenvolvimento
Vitis/metabolismo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dietary Carbohydrates); 0 (Disaccharides)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170613
[Lr] Data última revisão:
170613
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160422
[St] Status:MEDLINE
[do] DOI:10.1002/jsfa.7769


  3 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27117608
[Au] Autor:Osaili TM; Al Jamali AF; Makhadmeh IM; Taha M; Jarrar SK
[Ad] Endereço:a Department of Nutrition and Food Technology , Jordan University of Science and Technology , Irbid , Jordan.
[Ti] Título:Heavy metals in vegetables sold in the local market in Jordan.
[So] Source:Food Addit Contam Part B Surveill;9(3):223-9, 2016 Sep.
[Is] ISSN:1939-3229
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Heavy metals (As, Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn) in various vegetables (cabbage, green onion, lettuce, parsley, rocket, spinach, carrot, onion, potato and cauliflower) from the market in Jordan were measured using inductively coupled plasma-mass spectrometry. As, Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn ranged from 0.009-0.275 mg kg(-1) wet weight, 0.004-0.060 mg kg(-1), 0.003-0.401 mg kg(-1), 0.105-3.51 mg kg(-1), 0.15-1.15 mg kg(-1), 0.93-14.39 mg kg(-1), 0.044-0.702 mg kg(-1), 0.072-0.289 mg kg(-1) and 2.23-6.65 mg kg(-1), respectively. Parsley, followed by spinach, contained the highest concentration of heavy metals. Onion contained high levels of toxic heavy metals. The content of Cu in parsley and spinach and Pb in onion exceeded the Codex limits. However, the daily intake of heavy metals from the tested vegetables was lower than the maximum limits for allowable intake.
[Mh] Termos MeSH primário: Arsênico/análise
Poluentes Ambientais/análise
Contaminação de Alimentos
Metais Pesados/análise
Verduras/química
[Mh] Termos MeSH secundário: Adulto
Arsênico/toxicidade
Dieta/efeitos adversos
Dieta/etnologia
Dieta/normas
Inquéritos sobre Dietas
Poluentes Ambientais/toxicidade
União Europeia
Topos Floridos/efeitos adversos
Topos Floridos/química
Inspeção de Alimentos
Seres Humanos
Jordânia
Metais Pesados/toxicidade
Nível de Efeito Adverso não Observado
Folhas de Planta/efeitos adversos
Folhas de Planta/química
Raízes de Plantas/efeitos adversos
Raízes de Plantas/química
Tubérculos/efeitos adversos
Tubérculos/química
Espectrofotometria Atômica
Nações Unidas
Verduras/efeitos adversos
Verduras/economia
Verduras/normas
Organização Mundial da Saúde
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Metals, Heavy); N712M78A8G (Arsenic)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170413
[Lr] Data última revisão:
170413
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160428
[St] Status:MEDLINE
[do] DOI:10.1080/19393210.2016.1181675


  4 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26910811
[Au] Autor:Tello J; Cubero S; Blasco J; Tardaguila J; Aleixos N; Ibáñez J
[Ad] Endereço:Instituto de Ciencias de la Vid y del Vino (CSIC, Universidad de La Rioja, Gobierno de La Rioja), Logroño, Spain.
[Ti] Título:Application of 2D and 3D image technologies to characterise morphological attributes of grapevine clusters.
[So] Source:J Sci Food Agric;96(13):4575-83, 2016 Oct.
[Is] ISSN:1097-0010
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Grapevine cluster morphology influences the quality and commercial value of wine and table grapes. It is routinely evaluated by subjective and inaccurate methods that do not meet the requirements set by the food industry. Novel two-dimensional (2D) and three-dimensional (3D) machine vision technologies emerge as promising tools for its automatic and fast evaluation. RESULTS: The automatic evaluation of cluster length, width and elongation was successfully achieved by the analysis of 2D images, significant and strong correlations with the manual methods being found (r = 0.959, 0.861 and 0.852, respectively). The classification of clusters according to their shape can be achieved by evaluating their conicity in different sections of the cluster. The geometric reconstruction of the morphological volume of the cluster from 2D features worked better than the direct 3D laser scanning system, showing a high correlation (r = 0.956) with the manual approach (water displacement method). In addition, we constructed and validated a simple linear regression model for cluster compactness estimation. It showed a high predictive capacity for both the training and validation subsets of clusters (R(2) = 84.5 and 71.1%, respectively). CONCLUSION: The methodologies proposed in this work provide continuous and accurate data for the fast and objective characterisation of cluster morphology. © 2016 Society of Chemical Industry.
[Mh] Termos MeSH primário: Produtos Agrícolas/crescimento & desenvolvimento
Inspeção de Alimentos/métodos
Qualidade dos Alimentos
Frutas/crescimento & desenvolvimento
Caules de Planta/crescimento & desenvolvimento
Vitis/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Algoritmos
Inteligência Artificial
Produtos Agrícolas/classificação
Topos Floridos/classificação
Topos Floridos/crescimento & desenvolvimento
Frutas/classificação
Seres Humanos
Interpretação de Imagem Assistida por Computador
Imagem Tridimensional
Modelos Lineares
Fotografia
Caules de Planta/classificação
Espanha
Especificidade da Espécie
Vitis/classificação
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; VALIDATION STUDIES
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170523
[Lr] Data última revisão:
170523
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160225
[St] Status:MEDLINE
[do] DOI:10.1002/jsfa.7675


  5 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26847375
[Au] Autor:Bannayan M; Paymard P; Ashraf B
[Ad] Endereço:Department of Agronomy, Ferdowsi University of Mashhad, Mashhad, Iran.
[Ti] Título:Vulnerability of maize production under future climate change: possible adaptation strategies.
[So] Source:J Sci Food Agric;96(13):4465-74, 2016 Oct.
[Is] ISSN:1097-0010
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Climate change can affect the productivity and geographic distribution of crops. Therefore, evaluation of adaptive management options is crucial in dealing with negative impacts of climate change. The objectives of this study were to simulate the impacts of climate change on maize production in the north-east of Iran. Moreover, vulnerability index which indicated that how much of the crop yield loss is related to the drought was computed for each location to identify where adaptation and mitigation strategies are effective. Different sowing dates were also applied as an adaptation approach to decrease the negative impacts of climate change in study area. RESULTS: The results showed that the maize yield would decline during the 21st century from -2.6% to -82% at all study locations in comparison with the baseline. The result of vulnerability index also indicated that using the adaptation strategies could be effective in all of the study areas. Using different sowing dates as an adaptation approach showed that delaying the sowing date will be advantageous in order to obtain higher yield in all study locations in future. CONCLUSION: This study provided insight regarding the climate change impacts on maize production and the efficacy of adaptation strategies. © 2016 Society of Chemical Industry.
[Mh] Termos MeSH primário: Adaptação Fisiológica
Mudança Climática
Produção Agrícola
Produtos Agrícolas/fisiologia
Modelos Biológicos
Sementes/fisiologia
Zea mays/fisiologia
[Mh] Termos MeSH secundário: Adaptação Fisiológica/efeitos da radiação
Mudança Climática/economia
Simulação por Computador
Produção Agrícola/economia
Produção Agrícola/tendências
Produtos Agrícolas/economia
Produtos Agrícolas/crescimento & desenvolvimento
Produtos Agrícolas/efeitos da radiação
Clima Desértico
Secas/economia
Topos Floridos/crescimento & desenvolvimento
Topos Floridos/fisiologia
Topos Floridos/efeitos da radiação
Abastecimento de Alimentos/economia
Previsões
Seres Humanos
Irã (Geográfico)
Folhas de Planta/crescimento & desenvolvimento
Folhas de Planta/fisiologia
Folhas de Planta/efeitos da radiação
Estações do Ano
Sementes/crescimento & desenvolvimento
Sementes/efeitos da radiação
Luz Solar
Zea mays/crescimento & desenvolvimento
Zea mays/efeitos da radiação
[Pt] Tipo de publicação:JOURNAL ARTICLE; VALIDATION STUDIES
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170523
[Lr] Data última revisão:
170523
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160206
[St] Status:MEDLINE
[do] DOI:10.1002/jsfa.7659


  6 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26593602
[Au] Autor:Ruiz-Aceituno L; García-Sarrió MJ; Alonso-Rodriguez B; Ramos L; Sanz ML
[Ad] Endereço:Instituto de Química Orgánica General (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain.
[Ti] Título:Extraction of bioactive carbohydrates from artichoke (Cynara scolymus L.) external bracts using microwave assisted extraction and pressurized liquid extraction.
[So] Source:Food Chem;196:1156-62, 2016 Apr 01.
[Is] ISSN:0308-8146
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Microwave assisted extraction (MAE) and pressurized liquid extraction (PLE) methods using water as solvent have been optimized by means of a Box-Behnken and 3(2) composite experimental designs, respectively, for the effective extraction of bioactive carbohydrates (inositols and inulin) from artichoke (Cynara scolymus L.) external bracts. MAE at 60 °C for 3 min of 0.3 g of sample allowed the extraction of slightly higher concentrations of inositol than PLE at 75 °C for 26.7 min (11.6 mg/g dry sample vs. 7.6 mg/g dry sample). On the contrary, under these conditions, higher concentrations of inulin were extracted with the latter technique (185.4 mg/g vs. 96.4 mg/g dry sample), considering two successive extraction cycles for both techniques. Both methodologies can be considered appropriate for the simultaneous extraction of these bioactive carbohydrates from this particular industrial by-product. To the best of our knowledge this is the first time that these techniques are applied for this purpose.
[Mh] Termos MeSH primário: Fracionamento Químico/métodos
Cynara scolymus/química
Topos Floridos/química
Inositol/análogos & derivados
Inulina/isolamento & purificação
Micro-Ondas
[Mh] Termos MeSH secundário: Hexoses
Inositol/isolamento & purificação
Solventes
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Hexoses); 0 (Solvents); 4L6452S749 (Inositol); 9005-80-5 (Inulin)
[Em] Mês de entrada:1606
[Cu] Atualização por classe:151123
[Lr] Data última revisão:
151123
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151124
[St] Status:MEDLINE


  7 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25978791
[Au] Autor:Yao X; Wang X; Gu C; Zeng H; Chen W; Tang H
[Ad] Endereço:a College of Pharmacy, Shihezi University , Shihezi 832000 , Xinjiang , P.R. China.
[Ti] Título:Chemical composition, N-nitrosamine inhibition and antioxidant and antimicrobial properties of essential oil from Coreopsis tinctoria flowering tops.
[So] Source:Nat Prod Res;30(10):1170-3, 2016.
[Is] ISSN:1478-6427
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Coreopsis tinctoria flowering (CTF) tops from the Kunlun Mountains in Xinjing (north-western China) have been used for tea production for about a century. This study was to assess antioxidant, nitrite-scavenging and N-nitrosamine inhibitory and antimicrobial activities of the essential oil extracted from CTF tops. The essential oil was extracted through hydrodistillation and its chemical compositions were analysed by GC-MS. Seventy compounds of the oil were identified, representing 81.87% of total oil. The antioxidant capacities of the oil with IC50 values for scavenging DPPH and ABTS were 287.66 ± 12.60 and 1.251 ± 0.127 µg mL(- 1), respectively. The nitrite-scavenging and N-nitrosamine inhibitory activities (IC50) were 0.3912 ± 0.0127 and 0.6564 ± 0.036 µg mL(- 1), respectively. The oil has a certain antimicrobial capacity, but its capacity was weaker than that of penicillinG (24 µg mL(- 1)). The oil showed antioxidant and antimicrobial capacities and had a stronger nitrite-scavenging and N-nitrosamine inhibitory properties.
[Mh] Termos MeSH primário: Antibacterianos/química
Antioxidantes/química
Coreopsis/química
Nitrosaminas/antagonistas & inibidores
Óleos Voláteis/química
Óleos Vegetais/química
[Mh] Termos MeSH secundário: Antibacterianos/isolamento & purificação
Antioxidantes/isolamento & purificação
China
Topos Floridos/química
Cromatografia Gasosa-Espectrometria de Massas
Testes de Sensibilidade Microbiana
Extratos Vegetais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Antioxidants); 0 (Nitrosamines); 0 (Oils, Volatile); 0 (Plant Extracts); 0 (Plant Oils)
[Em] Mês de entrada:1611
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150516
[St] Status:MEDLINE
[do] DOI:10.1080/14786419.2015.1041943


  8 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25776853
[Au] Autor:Yao X; Gu C; Tian L; Wang X; Tang H
[Ad] Endereço:a College of Pharmacy, Shihezi University , Shihezi , 832000 Xinjiang , P.R. China.
[Ti] Título:Comparative study on the antioxidant activities of extracts of Coreopsis tinctoria flowering tops from Kunlun Mountains, Xinjiang, north-western China.
[So] Source:Nat Prod Res;30(4):429-32, 2016.
[Is] ISSN:1478-6427
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Coreopsis tinctoria flowering tops (CTFs) from the Kunlun Mountains in Xinjing (north-western China) have been used for tea production for about a century. This study aims to assess the antioxidant activities and total phenolic, flavonoid and proanthocyanidin contents of various solvent extracts of CTF. CTF was extracted using n-hexane, chloroform, ethyl acetate, n-butanol, 75% aqueous ethanol (AEE) and water. The antioxidant activities of the CTF extracts were investigated through DPPH, ABTS, *OH, *O2(-), total antioxidant capacity and reducing power assays. The results showed that n-butanol extract showed the highest contents of total phenols and flavonoids, with DPPH, ABTS and *OH radical-scavenging activities with IC50 values of 134, 90.72 and 13.8 µg mL(-1), respectively. The AEE demonstrated the strongest DPPH and ABTS radical-scavenging activities, with IC50 values of 103 and 75.16 µg mL(-1), respectively. Given its high antioxidant effect, CTF is a good source of natural antioxidants or functional food materials.
[Mh] Termos MeSH primário: Antioxidantes/farmacologia
Coreopsis/química
Extratos Vegetais/farmacologia
[Mh] Termos MeSH secundário: Antioxidantes/isolamento & purificação
Compostos de Bifenilo/química
China
Flavonoides/análise
Topos Floridos/química
Depuradores de Radicais Livres/química
Depuradores de Radicais Livres/farmacologia
Radical Hidroxila
Fenóis/análise
Picratos/química
Proantocianidinas/análise
Solventes
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Biphenyl Compounds); 0 (Flavonoids); 0 (Free Radical Scavengers); 0 (Phenols); 0 (Picrates); 0 (Plant Extracts); 0 (Proanthocyanidins); 0 (Solvents); 18206-61-6 (proanthocyanidin); 3352-57-6 (Hydroxyl Radical); DFD3H4VGDH (1,1-diphenyl-2-picrylhydrazyl)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:161126
[Lr] Data última revisão:
161126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150318
[St] Status:MEDLINE
[do] DOI:10.1080/14786419.2015.1015019


  9 / 194 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26243616
[Au] Autor:Bai J; Zhu X; Wang Q; Zhang J; Chen H; Dong G; Zhu L; Zheng H; Xie Q; Nian J; Chen F; Fu Y; Qian Q; Zuo J
[Ad] Endereço:State Key Laboratory of Plant Genomics and National Plant Gene Research Center (J.B., Q.W., J.Zh., H.Z., Q.X., J.N., J.Zu.) and State Key Laboratory of Molecular Developmental Biology and National Plant Gene Research Center (F.C.), Institute of Genetics and Developmental Biology, Chinese Academy of
[Ti] Título:Rice TUTOU1 Encodes a Suppressor of cAMP Receptor-Like Protein That Is Important for Actin Organization and Panicle Development.
[So] Source:Plant Physiol;169(2):1179-91, 2015 Oct.
[Is] ISSN:1532-2548
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Panicle development, a key event in rice (Oryza sativa) reproduction and a critical determinant of grain yield, forms a branched structure containing multiple spikelets. Genetic and environmental factors can perturb panicle development, causing panicles to degenerate and producing characteristic whitish, small spikelets with severely reduced fertility and yield; however, little is known about the molecular basis of the formation of degenerating panicles in rice. Here, we report the identification and characterization of the rice panicle degenerative mutant tutou1 (tut1), which shows severe defects in panicle development. The tut1 also shows a pleiotropic phenotype, characterized by short roots, reduced plant height, and abnormal development of anthers and pollen grains. Molecular genetic studies revealed that TUT1 encodes a suppressor of cAMP receptor/Wiskott-Aldrich syndrome protein family verprolin-homologous (SCAR/WAVE)-like protein. We found that TUT1 contains conserved functional domains found in eukaryotic SCAR/WAVE proteins, and was able to activate Actin-related protein2/3 to promote actin nucleation and polymerization in vitro. Consistently, tut1 mutants show defects in the arrangement of actin filaments in trichome. These results indicate that TUT1 is a functional SCAR/WAVE protein and plays an important role in panicle development.
[Mh] Termos MeSH primário: Actinas/metabolismo
Topos Floridos/crescimento & desenvolvimento
Oryza/crescimento & desenvolvimento
Proteínas de Plantas/metabolismo
[Mh] Termos MeSH secundário: Complexo 2-3 de Proteínas Relacionadas à Actina/genética
Complexo 2-3 de Proteínas Relacionadas à Actina/metabolismo
Proteínas de Arabidopsis/genética
Clonagem Molecular
Topos Floridos/fisiologia
Flores/citologia
Flores/genética
Flores/crescimento & desenvolvimento
Regulação da Expressão Gênica de Plantas
Mutação
Oryza/fisiologia
Proteínas de Plantas/genética
Plantas Geneticamente Modificadas
Pólen/citologia
Pólen/genética
Pólen/crescimento & desenvolvimento
Receptores de AMP Cíclico/genética
Receptores de AMP Cíclico/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Actin-Related Protein 2-3 Complex); 0 (Actins); 0 (Arabidopsis Proteins); 0 (DIS3 protein, Arabidopsis); 0 (Plant Proteins); 0 (Receptors, Cyclic AMP)
[Em] Mês de entrada:1607
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150806
[St] Status:MEDLINE
[do] DOI:10.1104/pp.15.00229


  10 / 194 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
PubMed Central Texto completo
Texto completo
[PMID]:26136266
[Au] Autor:Pan X; Hasan MM; Li Y; Liao C; Zheng H; Liu R; Li X
[Ad] Endereço:Department of Plant Nutrition, China Agricultural University, Beijing 100193, China.
[Ti] Título:Asymmetric transcriptomic signatures between the cob and florets in the maize ear under optimal- and low-nitrogen conditions at silking, and functional characterization of amino acid transporters ZmAAP4 and ZmVAAT3.
[So] Source:J Exp Bot;66(20):6149-66, 2015 Oct.
[Is] ISSN:1460-2431
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Coordinated functioning of the cob and florets of the maize ear confers grain yield. The cob is critical for carbon partitioning and assimilated nitrogen (N) supply for grain development. However, molecular recognition of the cob and peripheral florets, characterization of genes mediating translocation of N assimilates, and responses of these two tissues to low N (LN) remain elusive. Transcriptional profiling of the ear of a maize hybrid at silking in the field revealed 1864 differentially expressed genes between the cob and florets, with 1314 genes up-regulated in the cob and 550 genes up-regulated in florets. The cob was characterized by striking enrichment of genes that are involved in carbon/N transport and metabolism, consistent with the physiological role of the cob in carbon/N storage and transfer during ear development. The florets were characterized by enrichment of hormone signalling components and development related genes. We next examined the response of the cob and florets to LN stress. LN caused differential expression of 588 genes in the cob and only 195 genes in the florets, indicating that the cob dominated the response of the ear to LN at the transcriptional level. LN caused comprehensive alterations such as carbon/N metabolism or partitioning, hormone signalling and protein phosphorylation in terms of gene expression in the cob and/or florets. Fourteen genes responsive specifically to LN provided potential molecular markers for N-efficient maize breeding. We further functionally characterized two newly identified broad-spectrum amino acid transporters, ZmAAP4 and ZmVAAT3, that showed distinct expression patterns in the cob and florets and potentially important roles in amino-N mobilization in the ear. While both proteins could transport various amino acids into yeast or Arabidopsis cells, ZmAAP4 appeared to have higher efficiencies than ZmVAAT3 in transporting seven out of 22 examined amino acids.
[Mh] Termos MeSH primário: Sistemas de Transporte de Aminoácidos/genética
Regulação da Expressão Gênica de Plantas
Nitrogênio/metabolismo
Proteínas de Plantas/genética
Zea mays/crescimento & desenvolvimento
Zea mays/genética
[Mh] Termos MeSH secundário: Sistemas de Transporte de Aminoácidos/metabolismo
Topos Floridos/metabolismo
Flores/metabolismo
Regulação da Expressão Gênica no Desenvolvimento
Proteínas de Plantas/metabolismo
Transcriptoma
Zea mays/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Amino Acid Transport Systems); 0 (Plant Proteins); N762921K75 (Nitrogen)
[Em] Mês de entrada:1607
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150703
[St] Status:MEDLINE
[do] DOI:10.1093/jxb/erv315



página 1 de 20 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