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Pesquisa : B01.650.940.800.575.912.250.157.200.500 [Categoria DeCS]
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[PMID]:28942275
[Au] Autor:Yadav P; Kaur R; Kanwar MK; Sharma A; Verma V; Sirhindi G; Bhardwaj R
[Ad] Endereço:Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
[Ti] Título:Castasterone confers copper stress tolerance by regulating antioxidant enzyme responses, antioxidants, and amino acid balance in B. juncea seedlings.
[So] Source:Ecotoxicol Environ Saf;147:725-734, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The aim of the present study was to explore the effect of exogenous application of castasterone (CS) on physiologic and biochemical responses in Brassica juncea seedlings under copper (Cu) stress. Seeds were pre-soaked in different concentrations of CS and grown for 7 days under various levels of Cu. The exposure of B. juncea to higher levels of Cu led to decrease of morphologic parameters, with partial recovery of length and fresh weight in the CS pre-treated seedlings. Metal content was high in both roots and shoots under Cu exposure while the CS pre-treatment reduced the metal uptake. Accumulation of hydrogen peroxide (H O ) and superoxide anion radical (O ) were chosen as stress biomarker and higher levels of H O (88.89%) and O (62.11%) showed the oxidative stress in metal treated B. juncea seedlings, however, CS pre-treatment reduced ROS accumulation in Cu-exposed seedlings. The Cu exposures lead to enhance the plant's enzymatic and non-enzymatic antioxidant system. It was observed that enzymatic activities of ascorbate peroxidase (APOX), dehydroascorbate reductase (DHAR), and glutathione reductase (GR), glutathione perxoidase (GPOX) and gultrathione-s-transferase increased while activity of monodehydroascorbate reductase (MDHAR) decreased under Cu stress. The pre-treatment with CS positively affected the activities of enzymes. RT-PCR analysis showed that mRNA transcript levels were correlated with total enzymatic activity of DHAR, GR, GST and GSH. Increase in the gene expression of DHAR (1.85 folds), GR (3.24 folds), GST-1 (2.00 folds) and GSH-S (3.18 folds) was noticed with CS pre-treatment. Overall, the present study shows that Cu exposure induced severe oxidative stress in B. juncea plants and exogenous application of CS improved antioxidative defense system by modulating the ascorbate-glutathione cycle and amino acid metabolism.
[Mh] Termos MeSH primário: Antioxidantes/metabolismo
Colestanóis/farmacologia
Cobre/toxicidade
Mostardeira/efeitos dos fármacos
Estresse Oxidativo/efeitos dos fármacos
Poluentes do Solo/toxicidade
[Mh] Termos MeSH secundário: Aminoácidos/metabolismo
Cobre/metabolismo
Relação Dose-Resposta a Droga
Expressão Gênica/efeitos dos fármacos
Peróxido de Hidrogênio/metabolismo
Mostardeira/enzimologia
Mostardeira/genética
Poluentes do Solo/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Amino Acids); 0 (Antioxidants); 0 (Cholestanols); 0 (Soil Pollutants); 789U1901C5 (Copper); 80736-41-0 (castasterone); BBX060AN9V (Hydrogen Peroxide)
[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:170925
[St] Status:MEDLINE


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[PMID]:28881317
[Au] Autor:Kaur Kohli S; Handa N; Bali S; Arora S; Sharma A; Kaur R; Bhardwaj R
[Ad] Endereço:Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, India.
[Ti] Título:Modulation of antioxidative defense expression and osmolyte content by co-application of 24-epibrassinolide and salicylic acid in Pb exposed Indian mustard plants.
[So] Source:Ecotoxicol Environ Saf;147:382-393, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The study focuses on potential of combined pre-soaking treatment of 24-Epibrassinolide (EBL) and Salicylic acid (SA) in alleviating Pb phytotoxicity in Brassica juncea L. plants. The seeds after treatment with combination of both the hormones were sown in mixture of soil, sand and manure (3:1:1) and were exposed to Pb concentrations (0.25mM, 0.50mM and 0.75mM). After 30 days of growth, the plants were harvested and processed, for quantification of various metabolites. It was found that pre-sowing of seeds in combination of EBL and SA, mitigated the adverse effects of metal stress by modulating antioxidative defense response and enhanced osmolyte contents. Dry matter content and heavy metal tolerance index were enhanced in response to co-application of EBL and SA. The levels of superoxide anions, hydrogen peroxide and malondialdehyde were lowered by the combined treatment of hormones. Enhancement in activities of guaiacol peroxidase, catalase, glutathione reductase and glutathione-s-transferase were recorded. Contents of glutathione, tocopherol and ascorbic acid were also enhanced in response to co-application of both hormones. Expression of POD, CAT, GR and GST1 genes were up-regulated whereas SOD gene was observed to be down-regulated. Contents of proline, trehalose and glycine betaine were also reported to be elevated as a result of treatment with EBL+SA. The results suggest that co-application of EBL+SA may play an imperative role in improving the antioxidative defense expression of B. juncea plants to combat the oxidative stress generated by Pb toxicity.
[Mh] Termos MeSH primário: Antioxidantes/metabolismo
Brassinosteroides/farmacologia
Poluentes Ambientais/toxicidade
Chumbo/toxicidade
Mostardeira/efeitos dos fármacos
Ácido Salicílico/farmacologia
Esteroides Heterocíclicos/farmacologia
[Mh] Termos MeSH secundário: Poluentes Ambientais/metabolismo
Expressão Gênica/efeitos dos fármacos
Hidroponia
Chumbo/metabolismo
Mostardeira/enzimologia
Mostardeira/genética
Osmorregulação/efeitos dos fármacos
Estresse Oxidativo/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Brassinosteroids); 0 (Environmental Pollutants); 0 (Steroids, Heterocyclic); 2P299V784P (Lead); O414PZ4LPZ (Salicylic Acid); Y9IQ1L53OX (brassinolide)
[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:170908
[St] Status:MEDLINE


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[PMID]:28837875
[Au] Autor:Molnár Á; Feigl G; Trifán V; Ördög A; Szollosi R; Erdei L; Kolbert Z
[Ad] Endereço:Department of Plant Biology, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary. Electronic address: molnara@bio.u-szeged.hu.
[Ti] Título:The intensity of tyrosine nitration is associated with selenite and selenate toxicity in Brassica juncea L.
[So] Source:Ecotoxicol Environ Saf;147:93-101, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Selenium phytotoxicity involves processes like reactive nitrogen species overproduction and nitrosative protein modifications. This study evaluates the toxicity of two selenium forms (selenite and selenate at 0µM, 20µM, 50µM and 100µM concentrations) and its correlation with protein tyrosine nitration in the organs of hydroponically grown Indian mustard (Brassica juncea L.). Selenate treatment resulted in large selenium accumulation in both Brassica organs, while selenite showed slight root-to-shoot translocation resulting in a much lower selenium accumulation in the shoot. Shoot and root growth inhibition and cell viability loss revealed that Brassica tolerates selenate better than selenite. Results also show that relative high amounts of selenium are able to accumulate in Brassica leaves without obvious visible symptoms such as chlorosis or necrosis. The more severe phytotoxicity of selenite was accompanied by more intense protein tyrosine nitration as well as alterations in nitration pattern suggesting a correlation between the degree of Se forms-induced toxicities and nitroproteome size, composition in Brassica organs. These results imply the possibility of considering protein tyrosine nitration as novel biomarker of selenium phytotoxicity, which could help the evaluation of asymptomatic selenium stress of plants.
[Mh] Termos MeSH primário: Mostardeira/efeitos dos fármacos
Nitrocompostos/metabolismo
Espécies Reativas de Nitrogênio/metabolismo
Ácido Selênico/toxicidade
Ácido Selenioso/toxicidade
Tirosina/metabolismo
[Mh] Termos MeSH secundário: Transporte Biológico
Relação Dose-Resposta a Droga
Hidroponia
Mostardeira/metabolismo
Ácido Selênico/metabolismo
Ácido Selenioso/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Nitro Compounds); 0 (Reactive Nitrogen Species); 42HK56048U (Tyrosine); F6A27P4Q4R (Selenious Acid); HV0Y51NC4J (Selenic Acid)
[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:170825
[St] Status:MEDLINE


  4 / 1536 MEDLINE  
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[PMID]:28810257
[Au] Autor:Wang GX; He QY; Macas J; Novák P; Neumann P; Meng DX; Zhao H; Guo N; Han S; Zong M; Jin WW; Liu F
[Ad] Endereço:Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing Key Laboratory of Vegetable Germplasm Improvement, Beijing, China.
[Ti] Título:Karyotypes and Distribution of Tandem Repeat Sequences in Brassica nigra Determined by Fluorescence in situ Hybridization.
[So] Source:Cytogenet Genome Res;152(3):158-165, 2017.
[Is] ISSN:1424-859X
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Whole-genome shotgun reads were analyzed to determine the repeat sequence composition in the genome of black mustard, Brassica nigra (L.) Koch. The analysis showed that satellite DNA sequences are very abundant in the black mustard genome. The distribution pattern of 7 new tandem repeats (BnSAT13, BnSAT28, BnSAT68, BnSAT76, BnSAT114, BnSAT180, and BnSAT200) on black mustard chromosomes was visualized using fluorescence in situ hybridization (FISH). The FISH signals of BnSAT13 and BnSAT76 provided useful cytogenetic markers; their position and fluorescence intensity allowed for unambiguous identification of all 8 somatic metaphase chromosomes. A karyotype showing the location and fluorescence intensity of these tandem repeat sequences together with the position of rDNAs and centromeric retrotransposons of Brassica (CRB) was constructed. The establishment of the FISH-based karyotype in B. nigra provides valuable information that can be used in detailed analyses of B. nigra accessions and derived allopolyploid Brassica species containing the B genome.
[Mh] Termos MeSH primário: DNA de Plantas/genética
Hibridização in Situ Fluorescente/métodos
Cariótipo
Mostardeira/genética
Sequências de Repetição em Tandem/genética
[Mh] Termos MeSH secundário: Centrômero
Cromossomos de Plantas/genética
Cromossomos de Plantas/ultraestrutura
DNA Ribossômico/genética
DNA Satélite/genética
Marcadores Genéticos
Genoma de Planta
Metáfase
Microscopia de Fluorescência
Retroelementos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Plant); 0 (DNA, Ribosomal); 0 (DNA, Satellite); 0 (Genetic Markers); 0 (Retroelements)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170816
[St] Status:MEDLINE
[do] DOI:10.1159/000479179


  5 / 1536 MEDLINE  
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[PMID]:28787461
[Au] Autor:Kajla S; Mukhopadhyay A; Pradhan AK
[Ad] Endereço:Department of Genetics, University of Delhi South Campus, New Delhi, India.
[Ti] Título:Development of transgenic Brassica juncea lines for reduced seed sinapine content by perturbing phenylpropanoid pathway genes.
[So] Source:PLoS One;12(8):e0182747, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Sinapine is a major anti-nutritive compound that accumulates in the seeds of Brassica species. When ingested, sinapine imparts gritty flavuor in meat and milk of animals and fishy odor to eggs of brown egg layers, thereby compromising the potential use of the valuable protein rich seed meal. Sinapine content in Brassica juncea germplasm ranges from 6.7 to 15.1 mg/g of dry seed weight (DSW) which is significantly higher than the prescribed permissible level of 3.0 mg/g of DSW. Due to limited natural genetic variability, conventional plant breeding approach for reducing the sinapine content has largely been unsuccessful. Hence, transgenic approach for gene silencing was adopted by targeting two genes-SGT and SCT, encoding enzymes UDP- glucose: sinapate glucosyltransferase and sinapoylglucose: choline sinapoyltransferase, respectively, involved in the final two steps of sinapine biosynthetic pathway. These two genes were isolated from B. juncea and eight silencing constructs were developed using three different RNA silencing approaches viz. antisense RNA, RNAi and artificial microRNA. Transgenics in B. juncea were developed following Agrobacterium-mediated transformation. From a total of 1232 independent T0 transgenic events obtained using eight silencing constructs, 25 homozygous lines showing single gene inheritance were identified in the T2 generation. Reduction of seed sinapine content in these lines ranged from 15.8% to 67.2%; the line with maximum reduction had sinapine content of 3.79 mg/g of DSW. The study also revealed that RNAi method was more efficient than the other two methods used in this study.
[Mh] Termos MeSH primário: Colina/análogos & derivados
Genes de Plantas/genética
Mostardeira/genética
Mostardeira/metabolismo
Propanóis/metabolismo
Sementes/metabolismo
[Mh] Termos MeSH secundário: Colina/metabolismo
Simulação por Computador
Regulação da Expressão Gênica de Plantas
Glucosiltransferases/química
Glucosiltransferases/genética
Glucosiltransferases/metabolismo
Homozigoto
Modelos Moleculares
Mostardeira/enzimologia
Plantas Geneticamente Modificadas
Regiões Promotoras Genéticas/genética
Conformação Proteica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Propanols); 09211A0HHL (sinapine); 0F897O3O4M (1-phenylpropanol); EC 2.4.1.- (Glucosyltransferases); N91BDP6H0X (Choline)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170929
[Lr] Data última revisão:
170929
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170809
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0182747


  6 / 1536 MEDLINE  
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[PMID]:28624590
[Au] Autor:Mahmud JA; Hasanuzzaman M; Nahar K; Rahman A; Hossain MS; Fujita M
[Ad] Endereço:Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan; Department of Agroforestry and Environmental Science, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Na
[Ti] Título:Maleic acid assisted improvement of metal chelation and antioxidant metabolism confers chromium tolerance in Brassica juncea L.
[So] Source:Ecotoxicol Environ Saf;144:216-226, 2017 Oct.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Chromium (Cr) is a highly toxic environmental pollutant that negatively affects plant growth and development. Thus, remediating Cr from soil or increasing plant tolerance against Cr stress is urgent. Organic acids are recognized as agents of phytoremediation and as exogenous protectants, but using maleic acid (MA) to attain these results has not yet been studied. Therefore, our study investigated the effects of MA on Cr uptake and mitigation of Cr toxicity. We treated 8-d-old Indian mustard (Brassica juncea L.) seedlings with Cr (0.15mM and 0.3mM K CrO , 5 days) alone and in combination with MA (0.25mM) in a semi-hydroponic medium. Under Cr stress, plants accumulated Cr in both the roots and shoots in a dose-dependent manner, where the roots showed higher accumulation. Chromium stress reduced the growth and biomass of the Indian mustard plants by reducing water status and photosynthetic pigments, and increased oxidative damage due to generation of toxic reactive oxygen species (ROS) and methylglyoxal (MG). Chromium stress also interfered with the function of the antioxidant defense and glyoxalase systems. However, using MA in the Cr-stressed plants further increased Cr uptake in the roots, but it slightly reduced the translocation of Cr from the roots to the shoots at a lower dose of Cr and significantly at a higher dose. Moreover, MA also increased the other non-protein thiols (NPTs) containing phytochelatin (PC) content of the seedlings, which reduced Cr toxicity. Supplementing the stressed plants with MA upregulated the non-enzymatic antioxidants (ascorbate, AsA; glutathione, GSH); the activities of the enzymatic antioxidants including ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), glutathione peroxidase (GPX), superoxide dismutase (SOD), and catalase (CAT); and the enzymes of the glyoxalase system including glyoxalase I (Gly I) and glyoxalase II (Gly II); and finally reduced oxidative damage and increased the chlorophyll content and water status as well the growth and biomass of the plants. Our findings suggested two potential uses of MA: first, enhancing phytoremediation, principally phytostabilization and second, working as an exogenous protectant to enhance Cr tolerance.
[Mh] Termos MeSH primário: Antioxidantes/metabolismo
Cromo/toxicidade
Maleatos/farmacologia
Mostardeira/efeitos dos fármacos
Estresse Oxidativo/efeitos dos fármacos
Poluentes do Solo/toxicidade
[Mh] Termos MeSH secundário: Adaptação Fisiológica
Biodegradação Ambiental
Biomassa
Cromo/metabolismo
Mostardeira/crescimento & desenvolvimento
Mostardeira/metabolismo
Poluentes do Solo/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Maleates); 0 (Soil Pollutants); 0R0008Q3JB (Chromium); 91XW058U2C (maleic acid)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171110
[Lr] Data última revisão:
171110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170619
[St] Status:MEDLINE


  7 / 1536 MEDLINE  
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[PMID]:28620771
[Au] Autor:Fei M; Harvey JA; Yin Y; Gols R
[Ad] Endereço:Department of Terrestrial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands.
[Ti] Título:Oviposition Preference for Young Plants by the Large Cabbage Butterfly (Pieris brassicae ) Does not Strongly Correlate with Caterpillar Performance.
[So] Source:J Chem Ecol;43(6):617-629, 2017 Jun.
[Is] ISSN:1573-1561
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The effects of temporal variation in the quality of short-lived annual plants on oviposition preference and larval performance of insect herbivores has thus far received little attention. This study examines the effects of plant age on female oviposition preference and offspring performance in the large cabbage white butterfly Pieris brassicae. Adult female butterflies lay variable clusters of eggs on the underside of short-lived annual species in the family Brassicaceae, including the short-lived annuals Brassica nigra and Sinapis arvensis, which are important food plants for P. brassicae in The Netherlands. Here, we compared oviposition preference and larval performance of P. brassicae on three age classes (young, mature, and pre-senescing) of B. nigra and S. arvensis plants. Oviposition preference of P. brassicae declined with plant age in both plant species. Whereas larvae performed similarly on all three age classes in B. nigra, preference and performance were weakly correlated in S. arvensis. Analysis of primary (sugars and amino acids) and secondary (glucosinolates) chemistry in the plant shoots revealed that differences in their quality and quantity were more pronounced with respect to tissue type (leaves vs. flowers) than among different developmental stages of both plant species. Butterflies of P. brassicae may prefer younger and smaller plants for oviposition anticipating that future plant growth and size is optimally synchronized with the final larval instar, which contributes >80% of larval growth before pupation.
[Mh] Termos MeSH primário: Borboletas/fisiologia
Mostardeira/metabolismo
Oviposição
Sinapis/metabolismo
[Mh] Termos MeSH secundário: Animais
Comportamento Animal
Borboletas/química
Cromatografia Líquida de Alta Pressão
Feminino
Flores/química
Flores/metabolismo
Glucosinolatos/química
Glucosinolatos/metabolismo
Herbivoria
Larva/crescimento & desenvolvimento
Mostardeira/química
Folhas de Planta/química
Folhas de Planta/metabolismo
Sinapis/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Glucosinolates)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170801
[Lr] Data última revisão:
170801
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170617
[St] Status:MEDLINE
[do] DOI:10.1007/s10886-017-0853-9


  8 / 1536 MEDLINE  
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[PMID]:28618783
[Au] Autor:Vastakaite V; Virsile A; Brazaityte A; Samuoliene G; Jankauskiene J; Novickovas A; Duchovskis P
[Ad] Endereço:Laboratory of Plant Physiology, Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry , Kaunas Street 30, LT-54333 Babtai, Kaunas District, Lithuania.
[Ti] Título:Pulsed Light-Emitting Diodes for a Higher Phytochemical Level in Microgreens.
[So] Source:J Agric Food Chem;65(31):6529-6534, 2017 Aug 09.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A novel research of pulsed light-emitting diode (LED) lighting versus continuous lighting was conducted by analyzing phytochemical levels in microgreens. Red pak choi (Brassica rapa var. chinensis), mustard (Brassica juncea L.), and tatsoi (Brassica rapa var. rosularis) were grown indoors under HPS lamps supplemented with monochromatic (455, 470, 505, 590, and 627 nm) LEDs [total photosynthetic photon flux density (PPFD) of 200 ± 10 µmol m s , for 16 h day ]. For pulsed light treatments, the frequencies at 2, 32, 256, and 1024 Hz with a duty cycle of 50% monochromatic LEDs were applied. The results were compared to those under the continuous light (0 Hz) condition in terms of total phenolic content, anthocyanins, and antiradical activity (DPPH). The summarized data suggested that pulsed light affected accumulation of secondary metabolites both positive and negative in microgreens. The significant differences in the response of phytochemicals between pulsed light at several frequencies and continuous light were determined. The most positive effects of 2, 256, and 1024 Hz for total phenolic compounds in mustard under all wavelength LEDs were achieved. The LED frequencies at 2 and 32 Hz were the most suitable for accumulation of anthocyanins in red pak choi and tatsoi. The highest antiradical activity under the treatments of 32, 256, and 1024 Hz in mustard and under the 2 Hz frequency in red pak choi and tatsoi was determined.
[Mh] Termos MeSH primário: Brassica rapa/efeitos da radiação
Mostardeira/efeitos da radiação
Compostos Fitoquímicos/metabolismo
[Mh] Termos MeSH secundário: Antocianinas/análise
Antocianinas/metabolismo
Brassica rapa/química
Brassica rapa/metabolismo
Luz
Mostardeira/química
Mostardeira/metabolismo
Fenóis/análise
Fenóis/metabolismo
Compostos Fitoquímicos/análise
Folhas de Planta/efeitos da radiação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anthocyanins); 0 (Phenols); 0 (Phytochemicals)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170818
[Lr] Data última revisão:
170818
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170617
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b01214


  9 / 1536 MEDLINE  
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[PMID]:28581555
[Au] Autor:Repin N; Kay BA; Cui SW; Wright AJ; Duncan AM; Douglas Goff H
[Ad] Endereço:University of Guelph, Department of Food Science, Guelph, ON, CanadaN1G 2W1. dgoff@uoguelph.ca and Agriculture and Agri-Food Canada, Guelph Research and Development Centre, 93 Stone Rd. W., Guelph, ON, Canada N1G 5C9.
[Ti] Título:Investigation of mechanisms involved in postprandial glycemia and insulinemia attenuation with dietary fibre consumption.
[So] Source:Food Funct;8(6):2142-2154, 2017 Jun 01.
[Is] ISSN:2042-650X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This work examines the mechanisms involved in the attenuation of postprandial glycemic and insulinemic responses associated with soluble dietary fibre (SDF) consumption. The effect of SDF, including yellow mustard mucilage, soluble flaxseed gum and fenugreek gum on in vitro amylolysis and maltose transport was studied. Furthermore, a human clinical trial was conducted to investigate the effect of SDF consumption on postprandial glycemic and insulinemic responses and gastric emptying, as estimated based on the absorption of paracetamol. Participants (n = 15) at risk for type II diabetes consumed maltose syrup- and starch-based pudding treatments supplemented with each SDF, each at a concentration to match three times the apparent viscosity (18.54 mPa s at 60 s ) equivalent to the European Food Safety Authority (2011) glycemia control health claim for cereal ß-glucan, measured under simulated small intestinal conditions. The presence of each SDF delayed in vitro amylolysis to a similar extent, but had no effect on maltose transport. Generally, all SDF-containing treatments attenuated blood glucose and plasma insulin peak concentrations and plasma paracetamol 1 h incremental area under the curve values to a similar extent, relative to the controls, despite differences in the amounts at which each SDF was used (from 5.9 to 15.5 g). The postprandial attenuations were related to the ability of each SDF to modify digesta viscosity, perhaps through the delay of gastric emptying, as a delay of amylolysis and sugar transport under simulated upper intestinal conditions did not seem to have a substantial effect.
[Mh] Termos MeSH primário: Glicemia/metabolismo
Diabetes Mellitus Tipo 2/dietoterapia
Fibras na Dieta/metabolismo
Insulina/metabolismo
[Mh] Termos MeSH secundário: Adulto
Avena/química
Avena/metabolismo
Diabetes Mellitus Tipo 2/metabolismo
Diabetes Mellitus Tipo 2/fisiopatologia
Linho/química
Linho/metabolismo
Esvaziamento Gástrico
Índice Glicêmico
Seres Humanos
Masculino
Meia-Idade
Mostardeira/química
Mostardeira/metabolismo
Período Pós-Prandial
Trigonella/química
Trigonella/metabolismo
[Pt] Tipo de publicação:CLINICAL TRIAL; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Blood Glucose); 0 (Dietary Fiber); 0 (Insulin)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170606
[St] Status:MEDLINE
[do] DOI:10.1039/c7fo00331e


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[PMID]:28554021
[Au] Autor:Guarino C; Sciarrillo R
[Ad] Endereço:University of Sannio, Department of Science and Technology, via Port'Arsa 11, 82100 Benevento, Italy.
[Ti] Título:The effectiveness and efficiency of phytoremediation of a multicontaminated industrial site: Porto Marghera (Venice Lagoon, Italy).
[So] Source:Chemosphere;183:371-379, 2017 Sep.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The Venice Lagoon is worldwide considered as a typical example of the human impact on the surrounding ecosystem. The development of the industrial zone of Porto Marghera begun in 1917 as an extension of the Venice Port, in order to sustain activities related to oil and coal, as well as to exploit the railway system. Despite the recent decrease in the number of employees, Porto Marghera is still one of the most important chemical districts in Italy. This study reports early results from the ongoing in-situ phytoextraction of potentially toxic elements (Cd, Hg, Zn) within the industrial area of Porto Marghera. Two agronomic plant species with high annual biomass yield (Helianthus annuus L., Brassica juncea (L.) Czern.) were used. This paper also reports the microcosms and mesocosms tests to evaluate the efficacy of the treatments to be applied to the in-situ phytoextraction process of the polluted site. The combined use of EDTA and Ammonium Thiosulfate during phytoextraction increases the efficiency of Cd, Hg, Zn removal from contaminated soil.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Monitoramento Ambiental/métodos
Resíduos Industriais/análise
[Mh] Termos MeSH secundário: Cádmio/isolamento & purificação
Cádmio/farmacocinética
Helianthus/metabolismo
Itália
Mercúrio/isolamento & purificação
Mercúrio/farmacocinética
Mostardeira/metabolismo
Poluentes do Solo/isolamento & purificação
Poluentes do Solo/farmacocinética
Zinco/isolamento & purificação
Zinco/farmacocinética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Industrial Waste); 0 (Soil Pollutants); 00BH33GNGH (Cadmium); FXS1BY2PGL (Mercury); J41CSQ7QDS (Zinc)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170929
[Lr] Data última revisão:
170929
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170530
[St] Status:MEDLINE



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