Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.238.500.750 [Categoria DeCS]
Referências encontradas : 60 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 6 ir para página                

  1 / 60 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27515010
[Au] Autor:Hashemi S; Han M; Kim T
[Ad] Endereço:Waterfirst Lab, Department of Civil and Environmental Engineering, Seoul National University, Seoul, Korea.
[Ti] Título:Optimization of fertilization characteristics of urine by addition of Nitrosomonas europaea bio-seed.
[So] Source:J Sci Food Agric;96(13):4416-22, 2016 Oct.
[Is] ISSN:1097-0010
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Because of the high concentration of nutrients in human urine, its utilization as an organic fertilizer has been notable throughout history. However, the nitrogen compounds in urine are not stable. Therefore, to convert urine into a suitable fertilizer, it is important to stabilize and adjust unstable nitrogen compounds such as ammonia. Because nitrification can influence the nitrogen profile, the use of nitrifying microorganisms can be useful for stabilizing the nitrogen profile of urine. This study investigated the changes in nitrogen compounds in pure urine and examined the effect of adding Nitrosomonas europaea bio-seed solution on these changes. RESULTS: It was found that the addition of bio-seed could reduce nitrogen loss as well as the time required to stabilize the nitrogen profile. Furthermore, the optimum concentration of bio-seed (6 × 10(5) N. europaea cells L(-1) ) that not only leads to the least nutrient loss but also results in an adequate nitrate/ammonium ratio and regulates the amount of nitrate produced, thereby preventing over-fertilization, was determined. CONCLUSION: At this concentration, no dilution or dewatering is required, thus minimizing water and energy consumption. Usage of the optimum of concentration of bio-seed will also eliminate the need for inorganic chemical additives. © 2016 Society of Chemical Industry.
[Mh] Termos MeSH primário: Inoculantes Agrícolas/metabolismo
Fertilizantes
Ipomoea nil/crescimento & desenvolvimento
Nitrosomonas europaea/metabolismo
Agricultura Orgânica/métodos
Sementes/crescimento & desenvolvimento
Urina
[Mh] Termos MeSH secundário: Adulto
Inoculantes Agrícolas/crescimento & desenvolvimento
Algoritmos
Compostos de Amônio/metabolismo
Compostos de Amônio/urina
Reatores Biológicos/microbiologia
Fertilizantes/análise
Seres Humanos
Concentração de Íons de Hidrogênio
Ipomoea nil/metabolismo
Masculino
Nitratos/metabolismo
Nitratos/urina
Ciclo do Nitrogênio
Nitrosomonas europaea/crescimento & desenvolvimento
República da Coreia
Sementes/metabolismo
Solo/química
Urina/química
Eliminação de Resíduos Líquidos/métodos
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ammonium Compounds); 0 (Fertilizers); 0 (Nitrates); 0 (Soil)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160813
[St] Status:MEDLINE
[do] DOI:10.1002/jsfa.7652


  2 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
PubMed Central Texto completo
Texto completo
[PMID]:27253062
[Au] Autor:Knoblauch M; Knoblauch J; Mullendore DL; Savage JA; Babst BA; Beecher SD; Dodgen AC; Jensen KH; Holbrook NM
[Ad] Endereço:School of Biological Sciences, Washington State University, Pullman, United States.
[Ti] Título:Testing the Münch hypothesis of long distance phloem transport in plants.
[So] Source:Elife;5, 2016 Jun 02.
[Is] ISSN:2050-084X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Long distance transport in plants occurs in sieve tubes of the phloem. The pressure flow hypothesis introduced by Ernst Münch in 1930 describes a mechanism of osmotically generated pressure differentials that are supposed to drive the movement of sugars and other solutes in the phloem, but this hypothesis has long faced major challenges. The key issue is whether the conductance of sieve tubes, including sieve plate pores, is sufficient to allow pressure flow. We show that with increasing distance between source and sink, sieve tube conductivity and turgor increases dramatically in Ipomoea nil. Our results provide strong support for the Münch hypothesis, while providing new tools for the investigation of one of the least understood plant tissues.
[Mh] Termos MeSH primário: Ipomoea nil/metabolismo
Floema/metabolismo
[Mh] Termos MeSH secundário: Transporte Biológico
Ipomoea nil/crescimento & desenvolvimento
Pressão Osmótica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160603
[St] Status:MEDLINE


  3 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27074980
[Au] Autor:Hoshino A; Yoneda Y; Kuboyama T
[Ad] Endereço:National Institute for Basic Biology.
[Ti] Título:A Stowaway transposon disrupts the InWDR1 gene controlling flower and seed coloration in a medicinal cultivar of the Japanese morning glory.
[So] Source:Genes Genet Syst;91(1):37-40, 2016 Jul 20.
[Is] ISSN:1880-5779
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Floricultural cultivars of the Japanese morning glory (Ipomoea nil) carry transposons of the Tpn1 family as active spontaneous mutagens. Half of the characterized mutations related to floricultural traits were caused by insertion of Tpn1 family elements. In addition, mutations comprising insertions of several bp, presumed to be footprints generated by transposon excisions, were also found. Among these, ca-1 and ca-2 are 7-bp insertions at the same position in the InWDR1 gene, which encodes a multifunctional transcription regulator. InWDR1 enhances anthocyanin pigmentation in blue flowers and red stems, and promotes dark brown seed pigmentation as well as seed-trichome formation. The recessive ca mutants show white flowers and whitish seeds. We characterized here a white flower and whitish seed line that is used as a medicinal herb. The mutant line carries a novel ca allele named ca-3, which is the InWDR1 gene carrying an insertion of a Stowaway-like transposon, InSto1. The ca-3 allele is the first example of a mutation induced by transposons other than those in the Tpn1 family in I. nil. Because InSto1 and the 7-bp putative footprints are inserted at identical positions in InWDR1, ca-3 is likely to be the ancestor of ca-1 and ca-2. According to Japanese historical records on whitish seeds of I. nil, putative ca mutants appeared at the end of the 17th century, at the latest. This is around one hundred years before the appearance of many floricultural mutants. This suggests that ca-3 is one of the oldest mutations, and that its origin is different from that of most floricultural mutations in I. nil.
[Mh] Termos MeSH primário: Flores/genética
Ipomoea nil/genética
Pigmentação/genética
Plantas Medicinais/genética
[Mh] Termos MeSH secundário: Antocianinas/genética
Antocianinas/metabolismo
Elementos de DNA Transponíveis/genética
Flores/crescimento & desenvolvimento
Regulação da Expressão Gênica de Plantas
Ipomoea nil/crescimento & desenvolvimento
Mutação
Fenótipo
Plantas Medicinais/crescimento & desenvolvimento
Sementes/genética
Sementes/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anthocyanins); 0 (DNA Transposable Elements)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170206
[Lr] Data última revisão:
170206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160415
[St] Status:MEDLINE
[do] DOI:10.1266/ggs.15-00062


  4 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26858281
[Au] Autor:Azuma M; Mitsuda N; Goto K; Oshima Y; Ohme-Takagi M; Otagaki S; Matsumoto S; Shiratake K
[Ad] Endereço:Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601 Japan.
[Ti] Título:The Petal-Specific InMYB1 Promoter Functions by Recognizing Petaloid Cells.
[So] Source:Plant Cell Physiol;57(3):580-7, 2016 Mar.
[Is] ISSN:1471-9053
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:The InMYB1 gene in Japanese morning glory (Ipomoea nil) is a member of the MYB transcription factor family. The promoter of InMYB1 has been reported to induce petal-specific gene expression in Arabidopsis and Eustoma, and has the same function in several other dicotyledonous plants. Most flowers consist of sepals, petals, stamens and a carpel, whose identity establishment is explained by the ABC model. The establishment of the identity of petals is determined by the expression of class A and B genes in whorl 2. The aim of this study was to clarify whether the InMYB1 promoter functions by recognizing whorl position or petal identity by examining its activity in various mutant and transgenic Arabidopsis thaliana plants in which genes related to the ABC model have been modified. In plants defective in class C gene function, the InMYB1 promoter functioned not only in petals generated in whorl 2 but also in petaloid organs generated in whorl 3; while in the plants defective in class B gene function, the InMYB1 promoter did not function in the sepaloid organs generated in whorl 2. Plants overexpressing class A, B and E genes set flowers with petaloid sepals in whorl 1, i.e. the lateral parts were white and looked like petals, while the central parts were green and looked like sepals. The InMYB1 promoter functioned in the lateral white parts but not in the central green parts. These results show that the InMYB1 promoter functions by recognizing petal identity at the cellular level rather than the whorl position. The petal-specific function of the InMYB1 promoter could be used as a marker to identify petaloid cells.
[Mh] Termos MeSH primário: Flores/anatomia & histologia
Flores/genética
Células Vegetais/metabolismo
Proteínas de Plantas/genética
Regiões Promotoras Genéticas
[Mh] Termos MeSH secundário: Arabidopsis/anatomia & histologia
Regulação da Expressão Gênica de Plantas
Ipomoea nil/genética
Especificidade de Órgãos/genética
Epiderme Vegetal/citologia
Proteínas de Plantas/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Plant Proteins)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160210
[St] Status:MEDLINE
[do] DOI:10.1093/pcp/pcw017


  5 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25923400
[Au] Autor:Azuma M; Morimoto R; Hirose M; Morita Y; Hoshino A; Iida S; Oshima Y; Mitsuda N; Ohme-Takagi M; Shiratake K
[Ad] Endereço:Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Japan.
[Ti] Título:A petal-specific InMYB1 promoter from Japanese morning glory: a useful tool for molecular breeding of floricultural crops.
[So] Source:Plant Biotechnol J;14(1):354-63, 2016 Jan.
[Is] ISSN:1467-7652
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Production of novel transgenic floricultural crops with altered petal properties requires transgenes that confer a useful trait and petal-specific promoters. Several promoters have been shown to control transgenes in petals. However, all suffer from inherent drawbacks such as low petal specificity and restricted activity during the flowering stage. In addition, the promoters were not examined for their ability to confer petal-specific expression in a wide range of plant species. Here, we report the promoter of InMYB1 from Japanese morning glory as a novel petal-specific promoter for molecular breeding of floricultural crops. First, we produced stable InMYB1_1kb::GUS transgenic Arabidopsis and Eustoma plants and characterized spatial and temporal expression patterns under the control of the InMYB1 promoter by histochemical ß-glucuronidase (GUS) staining. GUS staining patterns were observed only in petals. This result showed that the InMYB1 promoter functions as a petal-specific promoter. Second, we transiently introduced the InMYB1_1 kb::GUS construct into Eustoma, chrysanthemum, carnation, Japanese gentian, stock, rose, dendrobium and lily petals by particle bombardment. GUS staining spots were observed in Eustoma, chrysanthemum, carnation, Japanese gentian and stock. These results showed that the InMYB1 promoter functions in most dicots. Third, to show the InMYB1 promoter utility in molecular breeding, a MIXTA-like gene function was suppressed or enhanced under the control of InMYB1 promoter in Arabidopsis. The transgenic plant showed a conspicuous morphological change only in the form of wrinkled petals. Based on these results, the InMYB1 promoter can be used as a petal-specific promoter in molecular breeding of floricultural crops.
[Mh] Termos MeSH primário: Produtos Agrícolas/genética
Embaralhamento de DNA/métodos
Flores/genética
Ipomoea nil/genética
Regiões Promotoras Genéticas
[Mh] Termos MeSH secundário: Arabidopsis/genética
Arabidopsis/ultraestrutura
Flores/anatomia & histologia
Flores/ultraestrutura
Regulação da Expressão Gênica no Desenvolvimento
Glucuronidase/metabolismo
Especificidade de Órgãos/genética
Fenótipo
Filogenia
Plantas Geneticamente Modificadas
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
EC 3.2.1.31 (Glucuronidase)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150430
[St] Status:MEDLINE
[do] DOI:10.1111/pbi.12389


  6 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26546919
[Au] Autor:Pawelek A; Szmidt-Jaworska A; Swiezawska B; Jaworski K
[Ad] Endereço:Nicolaus Copernicus University, Chair of Plant Physiology and Biotechnology, Lwowska St. 1, PL 87-100 Torun, Poland. Electronic address: apawelek@umk.pl.
[Ti] Título:Genomic structure and promoter characterization of the CDPK kinase gene expressed during seed formation in Pharbitis nil.
[So] Source:J Plant Physiol;189:87-96, 2015 Sep 15.
[Is] ISSN:1618-1328
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:CDPK kinases are a unique class of calcium sensor/responders that regulate many growth and developmental processes as well as stress responses of plants. PnCDPK1 kinase from Pharbitis nil is regulated by light and contributes to seed germination, seedling growth and flower formation. Following an earlier work in which we identified the PnCDPK1 coding sequence and a 330bp long 3'UTR (untranslated region), we present for the first time the genomic organization of PnCDPK1, including intron analysis and the gene copy number designation. We completed the research by identifying the 5'-flanking region of PnCDPK1 and analyzed it in silico, which led to the discovery of several cis-regulatory elements involved in light regulation, embryogenesis and seed development. The functional analysis of P. nil CDPK showed characterization of the PnCDPK1 transcript and PnCDPK protein level during seed formation and fruit maturation. The greatest amount of PnCDPK1 mRNA was present in the last stages of seed maturation. Moreover, two PnCDPK proteins of different molecular masses were discovered during fruit development, showing various protein accumulation and activity profile. The 56kDa protein dominated in the early stages of fruit development, whereas the smaller protein (52kDa) was prominent in the latter stages.
[Mh] Termos MeSH primário: Regulação da Expressão Gênica de Plantas
Genômica
Ipomoea nil/enzimologia
Proteínas Quinases/genética
[Mh] Termos MeSH secundário: Regiões 3' não Traduzidas/genética
Flores/enzimologia
Flores/genética
Flores/fisiologia
Flores/efeitos da radiação
Frutas/enzimologia
Frutas/genética
Frutas/fisiologia
Frutas/efeitos da radiação
Regulação da Expressão Gênica no Desenvolvimento
Germinação
Íntrons/genética
Ipomoea nil/genética
Ipomoea nil/fisiologia
Ipomoea nil/efeitos da radiação
Luz
Proteínas de Plantas/genética
Proteínas de Plantas/metabolismo
Regiões Promotoras Genéticas/genética
Proteínas Quinases/metabolismo
Plântulas/enzimologia
Plântulas/genética
Plântulas/fisiologia
Plântulas/efeitos da radiação
Sementes/enzimologia
Sementes/genética
Sementes/fisiologia
Sementes/efeitos da radiação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (3' Untranslated Regions); 0 (Plant Proteins); EC 2.7.- (Protein Kinases); EC 2.7.1.- (calcium-dependent protein kinase)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151108
[St] Status:MEDLINE


  7 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25877516
[Au] Autor:Wei C; Tao X; Li M; He B; Yan L; Tan X; Zhang Y
[Ad] Endereço:Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, Sichuan Key Laboratory of Molecular Biology and Biotechnology, College of Life Sciences, Sichuan University, Chengdu, 610064, China.
[Ti] Título:De novo transcriptome assembly of Ipomoea nil using Illumina sequencing for gene discovery and SSR marker identification.
[So] Source:Mol Genet Genomics;290(5):1873-84, 2015 Oct.
[Is] ISSN:1617-4623
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Ipomoea nil is widely used as an ornamental plant due to its abundance of flower color, but the limited transcriptome and genomic data hinder research on it. Using illumina platform, transcriptome profiling of I. nil was performed through high-throughput sequencing, which was proven to be a rapid and cost-effective means to characterize gene content. Our goal is to use the resulting information to facilitate the relevant research on flowering and flower color formation in I. nil. In total, 268 million unique illumina RNA-Seq reads were produced and used in the transcriptome assembly. These reads were assembled into 220,117 contigs, of which 137,307 contigs were annotated using the GO and KEGG database. Based on the result of functional annotations, a total of 89,781 contigs were assigned 455,335 GO term annotations. Meanwhile, 17,418 contigs were identified with pathway annotation and they were functionally assigned to 144 KEGG pathways. Our transcriptome revealed at least 55 contigs as probably flowering-related genes in I. nil, and we also identified 25 contigs that encode key enzymes in the phenylpropanoid biosynthesis pathway. Based on the analysis relating to gene expression profiles, in the phenylpropanoid biosynthesis pathway of I. nil, the repression of lignin biosynthesis might lead to the redirection of the metabolic flux into anthocyanin biosynthesis. This may be the most likely reason that I. nil has high anthocyanins content, especially in its flowers. Additionally, 15,537 simple sequence repeats (SSRs) were detected using the MISA software, and these SSRs will undoubtedly benefit future breeding work. Moreover, the information uncovered in this study will also serve as a valuable resource for understanding the flowering and flower color formation mechanisms in I. nil.
[Mh] Termos MeSH primário: Genes de Plantas
Marcadores Genéticos
Ipomoea nil/genética
Análise de Sequência de RNA
Transcriptoma
[Mh] Termos MeSH secundário: Antocianinas/biossíntese
Ipomoea nil/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Anthocyanins); 0 (Genetic Markers)
[Em] Mês de entrada:1512
[Cu] Atualização por classe:171007
[Lr] Data última revisão:
171007
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150417
[St] Status:MEDLINE
[do] DOI:10.1007/s00438-015-1034-6


  8 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25462081
[Au] Autor:Koshio A; Hasegawa T; Okada R; Takeno K
[Ad] Endereço:Graduate School of Science and Technology, Niigata University, Ikarashi, Nishi-ku, Niigata, Niigata 950-2181, Japan.
[Ti] Título:Endogenous factors regulating poor-nutrition stress-induced flowering in pharbitis: The involvement of metabolic pathways regulated by aminooxyacetic acid.
[So] Source:J Plant Physiol;173:82-8, 2015 Jan 15.
[Is] ISSN:1618-1328
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The short-day plant pharbitis (also called Japanese morning glory), Ipomoea nil (formerly Pharbitis nil), was induced to flower by poor-nutrition stress. This stress-induced flowering was inhibited by aminooxyacetic acid (AOA), which is a known inhibitor of phenylalanine ammonia-lyase (PAL) and the synthesis of indole-3-acetic acid (IAA) and 1-aminocycropropane-1-carboxylic acid (ACC) and thus regulates endogenous levels of salicylic acid (SA), IAA and polyamine (PA). Stress treatment increased PAL activity in cotyledons, and AOA suppressed this increase. The observed PAL activity and flowering response correlate positively, indicating that AOA functions as a PAL inhibitor. The inhibition of stress-induced flowering by AOA was also overcome by IAA. An antiauxin, 4-chlorophenoxy isobutyric acid, inhibited stress-induced flowering. Both SA and IAA promoted flowering induced by stress. PA also promoted flowering, and the effective PA was found to be putrescine (Put). These results suggest that all of the pathways leading to the synthesis of SA, IAA and Put are responsive to the flowering inhibition by AOA and that these endogenous factors may be involved in the regulation of stress-induced flowering. However, as none of them induced flowering under non-stress conditions, they may function cooperatively to promote flowering.
[Mh] Termos MeSH primário: Ácido Amino-Oxiacético/farmacologia
Ipomoea nil/fisiologia
Fenilalanina Amônia-Liase/antagonistas & inibidores
Reguladores de Crescimento de Planta/metabolismo
[Mh] Termos MeSH secundário: Aminoácidos Cíclicos/metabolismo
Cotilédone/efeitos dos fármacos
Cotilédone/enzimologia
Cotilédone/fisiologia
Flores/efeitos dos fármacos
Flores/enzimologia
Flores/fisiologia
Regulação da Expressão Gênica de Plantas/efeitos dos fármacos
Ácidos Indolacéticos/metabolismo
Ipomoea nil/efeitos dos fármacos
Ipomoea nil/enzimologia
Redes e Vias Metabólicas/efeitos dos fármacos
Fenilalanina Amônia-Liase/metabolismo
Proteínas de Plantas/antagonistas & inibidores
Proteínas de Plantas/metabolismo
Poliaminas/metabolismo
Putrescina/metabolismo
Ácido Salicílico/metabolismo
Estresse Fisiológico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Amino Acids, Cyclic); 0 (Indoleacetic Acids); 0 (Plant Growth Regulators); 0 (Plant Proteins); 0 (Polyamines); 14I68GI3OQ (Aminooxyacetic Acid); 3K9EJ633GL (1-aminocyclopropane-1-carboxylic acid); 6U1S09C61L (indoleacetic acid); EC 4.3.1.24 (Phenylalanine Ammonia-Lyase); O414PZ4LPZ (Salicylic Acid); V10TVZ52E4 (Putrescine)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170214
[Lr] Data última revisão:
170214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:141203
[St] Status:MEDLINE


  9 / 60 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25078660
[Au] Autor:Moura BB; Alves ES
[Ad] Endereço:Instituto de Botânica, Caixa Postal 3005, 01061-970 São Paulo, SP, Brazil. Electronic address: bmourabio@gmail.com.
[Ti] Título:Climatic factors influence leaf structure and thereby affect the ozone sensitivity of Ipomoea nil 'Scarlet O'Hara'.
[So] Source:Environ Pollut;194:11-16, 2014 Nov.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Phenotypic plasticity of the leaves can interfere with the plant sensitivity to ozone (O3) toxic effect. This study aimed to assess whether the leaf structure of Ipomoea nil changes due to climatic variations and whether these changes affect the species' sensitivity. Field exposures, in different seasons (winter and spring) were made. The leaves that developed during the winter were thinner, with a lower proportion of photosynthetic tissues, higher proportion of intercellular spaces and lower density and stomatal index compared to those developed during the spring. The temperature and relative humidity positively influenced the leaf thickness and stomatal index. The visible injuries during winter were positively correlated with the palisade parenchyma thickness and negatively correlated with the percentage of spongy parenchyma; during the spring, the symptoms were positively correlated with the stomatal density. In conclusion, the leaf structure of I. nil varied among the seasons, interfering in its sensitivity to O3.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/toxicidade
Ipomoea nil/efeitos dos fármacos
Ozônio/toxicidade
Folhas de Planta/anatomia & histologia
[Mh] Termos MeSH secundário: Poluentes Atmosféricos/análise
Ipomoea nil/fisiologia
Ozônio/análise
Fotossíntese
Folhas de Planta/química
Folhas de Planta/efeitos dos fármacos
Estações do Ano
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Air Pollutants); 66H7ZZK23N (Ozone)
[Em] Mês de entrada:1412
[Cu] Atualização por classe:171028
[Lr] Data última revisão:
171028
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140801
[St] Status:MEDLINE


  10 / 60 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25020073
[Au] Autor:Kim KH; Woo KW; Moon E; Choi SU; Kim SY; Choi SZ; Son MW; Lee KR
[Ad] Endereço:Natural Products Laboratory, School of Pharmacy, Sungkyunkwan University , Suwon 440-746, Korea.
[Ti] Título:Identification of antitumor lignans from the seeds of morning glory (Pharbitis nil).
[So] Source:J Agric Food Chem;62(31):7746-52, 2014 Aug 06.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In the search for antitumor compounds from Korean natural resources, activity-guided fractionation and purification processes were used on seeds of morning glory (Pharbitis nil). Air-dried P. nil seeds were extracted with ethanol and separated into n-hexane, chloroform, ethyl acetate, and n-butanol. Four new lignans, pharbilignans A-D (1-4) were isolated from the most active ethyl acetate fraction of the ethanol extract. Their structures were characterized on the basis of spectroscopic methods, including one- and two-dimensional nuclear magnetic resonance (NMR) techniques, high resolution mass spectrometry (HRMS), and circular dichroism (CD) spectroscopy. The cytotoxic activities of the isolates (1-4) were evaluated by determining their inhibitory effects on four human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT15) using a sulforhodamine B (SRB) bioassay. Pharbilignan C (3) showed potent cytotoxicity against A549, SK-OV-3, SK-MEL-2, and HCT-15 cell lines with IC50 values of 1.42, 0.16, 0.20, and 0.14 µM, respectively. On the basis of the expanded understanding that inflammation is a crucial cause in tumor progress, we also evaluated anti-inflammatory activity of the isolates (1-4). Pharbilignan C (3) strongly inhibited nitric oxide (NO) production in the lipopolysaccharide (LPS)-activated BV-2 microglia cell line with an IC50 value of 12.8 µM.
[Mh] Termos MeSH primário: Antineoplásicos Fitogênicos/farmacologia
Ipomoea nil/química
Lignanas/farmacologia
Sementes/química
[Mh] Termos MeSH secundário: Anti-Inflamatórios/farmacologia
Antineoplásicos Fitogênicos/química
Antineoplásicos Fitogênicos/isolamento & purificação
Linhagem Celular Tumoral
Seres Humanos
Lignanas/química
Lignanas/isolamento & purificação
Extratos Vegetais/química
República da Coreia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Anti-Inflammatory Agents); 0 (Antineoplastic Agents, Phytogenic); 0 (Lignans); 0 (Plant Extracts)
[Em] Mês de entrada:1504
[Cu] Atualização por classe:140807
[Lr] Data última revisão:
140807
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140715
[St] Status:MEDLINE
[do] DOI:10.1021/jf501470k



página 1 de 6 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