Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.300.188 [Categoria DeCS]
Referências encontradas : 178 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 18 ir para página                         

  1 / 178 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28476996
[Au] Autor:Devi GK; Sathishkumar K
[Ad] Endereço:Department of Chemical Engineering, SSN College of Engineering, Chennai 603110, India.
[Ti] Título:Synthesis of gold and silver nanoparticles using plant extract and its anticancer activity.
[So] Source:IET Nanobiotechnol;11(2):143-151, 2017 Mar.
[Is] ISSN:1751-8741
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The present investigation reveals the cytotoxic effect of the biosynthesised metal nanoparticles on the MCF 7 breast cancer cell lines. The gold and silver nanoparticles were synthesised through an environmentally admissible route using the plant extract. Initially, the biomolecules present in the plant extract were analysed using phytochemical analysis. Further, these biomolecules reduce the metal ion solution resulting from the formation of metal nanoparticles. The reaction parameters were optimised to control the size of nanoparticles which were confirmed by UV visible spectroscopy. Various instrumental techniques such as Fourier transform-infrared spectroscopy, high resolution transmission electron microscopy, energy dispersive X-ray and scanning electron microscopy were employed to characterise the synthesised gold and silver nanoparticles. The synthesised gold and silver nanoparticles were found to be 20-50 nm and were of different shapes including spherical, triangle and hexagonal. MTT and dual staining assays were carried out with different concentrations (1, 10, 25, 50 and 100 µg/ml) of gold and silver nanoparticles. The results show that the nanoparticles exhibited significant cytotoxic effects with IC 50 value of 44.8 µg/g for gold nanoparticles and 51.3 µg/g for silver nanoparticles. The observations in this study show that this can be developed as a promising nanomaterial in pharmaceutical and healthcare sector.
[Mh] Termos MeSH primário: Apoptose/efeitos dos fármacos
Cucumis/química
Ouro/administração & dosagem
Nanopartículas Metálicas/administração & dosagem
Extratos Vegetais/química
Prata/administração & dosagem
[Mh] Termos MeSH secundário: Antineoplásicos/administração & dosagem
Antineoplásicos/síntese química
Relação Dose-Resposta a Droga
Composição de Medicamentos/métodos
Ouro/química
Química Verde/métodos
Seres Humanos
Células MCF-7
Nanopartículas Metálicas/química
Nanopartículas Metálicas/ultraestrutura
Tamanho da Partícula
Prata/química
Resultado do Tratamento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antineoplastic Agents); 0 (Plant Extracts); 3M4G523W1G (Silver); 7440-57-5 (Gold)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170507
[St] Status:MEDLINE
[do] DOI:10.1049/iet-nbt.2015.0054


  2 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28407180
[Au] Autor:Li XZ; Chen SX
[Ad] Endereço:College of Horticulture Science, Northwest A & F University, , China.
[Ti] Título:Screening and identification of cucumber germplasm and rootstock resistance against the root-knot nematode (Meloidogyne incognita).
[So] Source:Genet Mol Res;16(2), 2017 Apr 13.
[Is] ISSN:1676-5680
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:Root-knot nematodes (Meloidogyne spp) are destructive agricultural pests that reduce the productivity of cultivated vegetables worldwide, especially when vegetables are cropped continuously in greenhouses. Cucumbers (Cucumis sativus L.), in particular, suffer extensive damage due to root-knot nematodes, and only a few wild species are known to be resistant. Grafting of cultivated plants to rootstocks of known resistant germplasms could be an effective method to resolve this problem. In this study, 21 cucumber germplasms and seven rootstocks were evaluated for resistance based on the growth of cucumber seedlings and resistance indexes to Meloidogyne incognita, which were surveyed 25 days after inoculation with M. incognita. Cluster analysis and principal component analysis (PCA) were used to investigate the resistance of 21 cucumber germplasms and seven rootstocks based on their growth and resistance indexes after inoculation with M. incognita. These analyses showed that the 21 germplasms and seven rootstocks could be divided into three groups based upon their resistance levels: moderately resistant, susceptible, and highly susceptible to M. incognita. All 21 cucumber germplasms exhibited susceptibility or high susceptibility to M. incognita and most rootstocks exhibited moderate resistance. The PCA results were consistent with those of the clustering analysis. The Jinyou No.1 cultivar had the highest resistance to M. incognita among the 21 cucumber germplasms, and Huangzhen No.1 cultivar had the highest resistance among the seven rootstock cultivars.
[Mh] Termos MeSH primário: Cucumis/genética
Resistência à Doença/genética
[Mh] Termos MeSH secundário: Animais
Cucumis/imunologia
Cucumis/parasitologia
Variação Genética
Raízes de Plantas/genética
Raízes de Plantas/parasitologia
Sementes/genética
Sementes/parasitologia
Tylenchoidea/patogenicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170504
[Lr] Data última revisão:
170504
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170414
[St] Status:MEDLINE
[do] DOI:10.4238/gmr16029383


  3 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28314173
[Au] Autor:Ye DY; Qi YH; Cao SF; Wei BQ; Zhang HS
[Ad] Endereço:Institute of Vegetables, Gansu Academy of Agricultural Sciences, Scientific Observations Experiment Station of Vegetables, Ministry of Agriculture in the Northwest of China, Lanzhou 730070, China. Electronic address: ydy287@163.com.
[Ti] Título:Histopathology combined with transcriptome analyses reveals the mechanism of resistance to Meloidogyne incognita in Cucumis metuliferus.
[So] Source:J Plant Physiol;212:115-124, 2017 May.
[Is] ISSN:1618-1328
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Root-knot nematodes (Meloidogyne spp.) cause serious threat to cucumber production. Cucumis metuliferus, a relative of cucumber, is reported to be resistant to Meloidogyne incognita, yet the underlying resistance mechanism remains unclear. In this study, the response of resistant C. metuliferus accession PI482443 following nematode infection was studied in comparison with susceptible C. sativus cv. Jinlv No.3. Roots of selected Cucumis seedings were analysed using histological and biochemical techniques. Transcriptome changes of the resistance reaction were investigated by RNA-seq. The results showed that penetration and development of the nematode in resistant plants were reduced when compared to susceptible plants. Infection of a resistant genotype with M. incognita resulted in a hypersensitive reaction. The induction of phenylalanine ammonia lyase and peroxidase activities after infection was greater in resistant than susceptible roots. Several of the most relevant genes for phenylpropanoid biosynthesis, plant hormone signal transduction, and the plant-pathogen interaction pathway that are involved in resistance to the nematode were significantly altered. The resistance in C. metuliferus PI482443 to M. incognita was associated with reduced nematode penetration, retardation of nematode development, and hypersensitive necrosis. The expression of genes resulting in the deposition of lignin, toxic compounds synthesis, cell wall reinforcement, suppression of nematode feeding and resistance protein accumulation, and activation of several transcription factors might all contribute to the resistance response to the pest. These results may lead to a better understanding of the resistance mechanism and aid in the identification of potential targets resistant to pests for cucumber improvement.
[Mh] Termos MeSH primário: Cucumis/genética
Cucumis/parasitologia
Resistência à Doença/genética
Doenças das Plantas/parasitologia
Transcriptoma
Tylenchoidea/patogenicidade
[Mh] Termos MeSH secundário: Animais
Cucumis/metabolismo
Perfilação da Expressão Gênica/métodos
Regulação da Expressão Gênica de Plantas
Genótipo
Interações Hospedeiro-Parasita/genética
Anotação de Sequência Molecular
Células Vegetais
Reguladores de Crescimento de Planta/metabolismo
Raízes de Plantas/citologia
Raízes de Plantas/enzimologia
Raízes de Plantas/parasitologia
Análise de Sequência de RNA
Transdução de Sinais
Fatores de Transcrição
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Growth Regulators); 0 (Transcription Factors)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170318
[St] Status:MEDLINE


  4 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28148800
[Au] Autor:Newburn LR; White KA
[Ad] Endereço:Department of Biology, York University, Toronto, Ontario, Canada.
[Ti] Título:Atypical RNA Elements Modulate Translational Readthrough in Tobacco Necrosis Virus D.
[So] Source:J Virol;91(8), 2017 Apr 15.
[Is] ISSN:1098-5514
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Tobacco necrosis virus, strain D (TNV-D), is a positive-strand RNA virus in the genus and family The production of its RNA-dependent RNA polymerase, p82, is achieved by translational readthrough. This process is stimulated by an RNA structure that is positioned immediately downstream of the recoding site, termed the readthrough stem-loop (RTSL), and a sequence in the 3' untranslated region of the TNV-D genome, called the distal readthrough element (DRTE). Notably, a base pairing interaction between the RTSL and the DRTE, spanning ∼3,000 nucleotides, is required for enhancement of readthrough. Here, some of the structural features of the RTSL, as well as RNA sequences and structures that flank either the RTSL or DRTE, were investigated for their involvement in translational readthrough and virus infectivity. The results revealed that (i) the RTSL-DRTE interaction cannot be functionally replaced by stabilizing the RTSL structure, (ii) a novel tertiary RNA structure positioned just 3' to the RTSL is required for optimal translational readthrough and virus infectivity, and (iii) these same activities also rely on an RNA stem-loop located immediately upstream of the DRTE. Functional counterparts for the RTSL-proximal structure may also be present in other tombusvirids. The identification of additional distinct RNA structures that modulate readthrough suggests that regulation of this process by genomic features may be more complex than previously appreciated. Possible roles for these novel RNA elements are discussed. The analysis of factors that affect recoding events in viruses is leading to an ever more complex picture of this important process. In this study, two new atypical RNA elements were shown to contribute to efficient translational readthrough of the TNV-D polymerase and to mediate robust viral genome accumulation in infections. One of the structures, located close to the recoding site, could have functional equivalents in related genera, while the other structure, positioned 3' proximally in the viral genome, is likely limited to betanecroviruses. Irrespective of their prevalence, the identification of these novel RNA elements adds to the current repertoire of viral genome-based modulators of translational readthrough and provides a notable example of the complexity of regulation of this process.
[Mh] Termos MeSH primário: Biossíntese de Proteínas
RNA Replicase/biossíntese
RNA Mensageiro/genética
RNA Viral/genética
Tombusviridae/genética
[Mh] Termos MeSH secundário: Cucumis/virologia
Análise Mutacional de DNA
Conformação de Ácido Nucleico
RNA Replicase/genética
RNA Mensageiro/química
RNA Viral/química
Tombusviridae/enzimologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Messenger); 0 (RNA, Viral); EC 2.7.7.48 (RNA Replicase)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170929
[Lr] Data última revisão:
170929
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170203
[St] Status:MEDLINE


  5 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27919625
[Au] Autor:Devi GK; Kumar KS; Parthiban R; Kalishwaralal K
[Ad] Endereço:Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, India. Electronic address: devigk19@gmail.com.
[Ti] Título:An insight study on HPTLC fingerprinting of Mukia maderaspatna: Mechanism of bioactive constituents in metal nanoparticle synthesis and its activity against human pathogens.
[So] Source:Microb Pathog;102:120-132, 2017 Jan.
[Is] ISSN:1096-1208
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The present work reports the development of a Simple, rapid and eco-friendly route for the biosynthesis of gold and silver nanoparticles and their antimicrobial activity against gram positive and gram negative bacterial pathogens in the wound infected area. The synthesis was done using Mukia maderasapatna plant extract as a reducing agent. FT-IR analysis reported that the methanol extract was found to contain maximum number of functional groups which is responsible for the reduction of metal ions to metal nanoparticles. Further, the presence of bioactive molecules present in the methanol extract was confirmed by GC-MS analysis. The major phytochemical constituents observed in this Mukia maderaspatna leaf extract were n-hexadecanoic acid (15.51%), Octadecanoic acid (11.92%), stigmasterol (9.12%), Octadecanoic acid, 2, 3 hydroxypropyl ester (8.7%), Bicycloheptane, 2,6,6- trimethyl (5.57%) and stearic acid (4.23%). Initially, the formation of gold and silver nanoparticles was confirmed from their absorption spectra at 535 nm and 434 nm using UV- visible spectroscopy. The crystalline nature of the obtained gold and silver nanoparticles was confirmed by X-ray diffraction analysis. The average size of the gold and silver nanoparticles found around 50 nm and 20 nm respectively was confirmed by TEM analysis. The antimicrobial activities of silver and gold nanoparticles were checked against bacterial strains and the fungal strains. The formation of inhibition zones concluded that both the nanoparticles showed efficient antimicrobial activity against both the pathogens. Further, different concentrations of gold and silver nanoparticles, the antibiotics Ciprofloxacin and chloramphenicol as the positive control were carried out. The results concluded that the silver nanoparticles showed efficient activity against bacterial pathogens and fungal pathogens with the lowest concentration of 0.35 µg/ml and 0.45 µg/ml respectively.
[Mh] Termos MeSH primário: Cucumis/química
Extratos Vegetais/química
Extratos Vegetais/farmacologia
Análise Espectral
[Mh] Termos MeSH secundário: Anti-Infecciosos/química
Anti-Infecciosos/farmacologia
Cromatografia Gasosa-Espectrometria de Massas
Ouro/química
Bactérias Gram-Negativas/efeitos dos fármacos
Bactérias Gram-Positivas/efeitos dos fármacos
Seres Humanos
Nanopartículas Metálicas/administração & dosagem
Nanopartículas Metálicas/química
Testes de Sensibilidade Microbiana
Compostos Fitoquímicos/química
Compostos Fitoquímicos/farmacologia
Prata/química
Espectroscopia de Infravermelho com Transformada de Fourier
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Infective Agents); 0 (Phytochemicals); 0 (Plant Extracts); 3M4G523W1G (Silver); 7440-57-5 (Gold)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170406
[Lr] Data última revisão:
170406
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161207
[St] Status:MEDLINE


  6 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28002819
[Au] Autor:Li K; Wang H; Wang J; Sun J; Li Z; Han Y
[Ad] Endereço:School of Life Sciences, Jiangsu Normal University, Xuzhou, China.
[Ti] Título:Divergence between C. melo and African Cucumis Species Identified by Chromosome Painting and rDNA Distribution Pattern.
[So] Source:Cytogenet Genome Res;150(2):150-155, 2016.
[Is] ISSN:1424-859X
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:The 5S and 45S rDNA sites are useful chromosome landmarks and can provide valuable information about karyotype evolution and species interrelationships. In this study, we employed fluorescence in situ hybridization (FISH) to determine the number and chromosomal location of 5S and 45S rDNA loci in 8 diploid Cucumis species. Two oligonucleotide painting probes specific for the rDNA-bearing chromosomes in C. melo were hybridized to other Cucumis species in order to investigate the homeologies among the rDNA-carrying chromosomes in Cucumis species. The analyzed diploid species showed 3 types of rDNA distribution patterns, which provided clear cytogenetic evidence on the divergence between C. melo and wild diploid African Cucumis species. The present results not only show species interrelationships in the genus Cucumis, but the rDNA FISH patterns can also be used as cytological markers for the discrimination of closely related species. The data will be helpful for breeders to choose the most suitable species from various wild species for improvement of cultivated melon.
[Mh] Termos MeSH primário: Cucumis/genética
[Mh] Termos MeSH secundário: África
Coloração Cromossômica
Cromossomos de Plantas/genética
Cucumis/classificação
Sondas de DNA
DNA de Plantas/genética
DNA Ribossômico/genética
Diploide
Hibridização in Situ Fluorescente
Filogenia
Especificidade da Espécie
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA Probes); 0 (DNA, Plant); 0 (DNA, Ribosomal)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170221
[Lr] Data última revisão:
170221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161222
[St] Status:MEDLINE
[do] DOI:10.1159/000453520


  7 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27334092
[Au] Autor:Zhang ZT; Yang SQ; Li ZA; Zhang YX; Wang YZ; Cheng CY; Li J; Chen JF; Lou QF
[Ad] Endereço:State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Weigang Street No. 1, Nanjing 210095, China.
[Ti] Título:Comparative chromosomal localization of 45S and 5S rDNAs and implications for genome evolution in Cucumis.
[So] Source:Genome;59(7):449-57, 2016 Jul.
[Is] ISSN:1480-3321
[Cp] País de publicação:Canada
[La] Idioma:eng
[Ab] Resumo:Ribosomal DNAs are useful cytogenetic markers for chromosome analysis. Studies investigating site numbers and distributions of rDNAs have provided important information for elucidating genome organization and chromosomal relationships of many species by fluorescence in situ hybridization. But relevant studies are scarce for species of the genus Cucumis, especially in wild species. In the present study, FISH was conducted to investigate the organization of 45S and 5S rDNA among 20 Cucumis accessions, including cultivars and wild accessions. Our results showed that the number of 45S rDNA sites varied from one to five pairs in different accessions, and most of these sites are located at the terminal regions of chromosomes. Interestingly, up to five pairs of 45S rDNA sites were observed in C. sativus var. sativus, the species which has the lowest chromosome number, i.e., 2n = 14. Only one pair of 5S rDNA sites was detected in all accessions, except for C. heptadactylus, C. sp, and C. spp that had two pairs of 5S rDNA sites. The distributions of 5S rDNA sites showed more variation than 45S rDNA sites. The phylogenetic analysis in this study showed that 45S and 5S rDNA have contrasting evolutionary patterns. We find that 5S rDNA has a polyploidization-related tendency towards the terminal location from an interstitial location but maintains a conserved site number, whereas the 45S rDNA showed a trend of increasing site number but a relatively conserved location.
[Mh] Termos MeSH primário: Mapeamento Cromossômico
Cromossomos de Plantas
Cucumis/genética
DNA de Plantas/genética
DNA Ribossômico/genética
RNA Ribossômico 5S/genética
RNA Ribossômico/genética
[Mh] Termos MeSH secundário: África
Ásia
Evolução Molecular
Variação Genética
Genoma de Planta
Hibridização in Situ Fluorescente/métodos
Cariotipagem
Filogenia
Poliploidia
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Plant); 0 (DNA, Ribosomal); 0 (RNA, Ribosomal); 0 (RNA, Ribosomal, 5S); 0 (RNA, ribosomal, 45S)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170404
[Lr] Data última revisão:
170404
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160624
[St] Status:MEDLINE
[do] DOI:10.1139/gen-2015-0207


  8 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27233043
[Au] Autor:Hussain N; Abbasi T; Abbasi SA
[Ad] Endereço:Centre for Pollution Control & Environmental Engineering, Pondicherry University, Chinnakalapet, Puducherry 605 014, India.
[Ti] Título:Vermicomposting transforms allelopathic parthenium into a benign organic fertilizer.
[So] Source:J Environ Manage;180:180-9, 2016 Sep 15.
[Is] ISSN:1095-8630
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Vermicompost, which had been derived solely by the action of the epigeic earthworm Eisenia fetida on parthenium (Parthenium hysterophorus), was tested for its impact on the germination and early growth of green gram (Vigna radiata), ladies finger (Abelmoschus esculentus) and cucumber (Cucumis sativus). Seedlings were germinated and grown in soil amended with 0 (control), 0.75, 1.5, 2, 4, 8, 20 and 40% (by weight) parthenium vermicompost. Even though parthenium is known to possess strong negative allelopathy, as also plant/animal toxicity in other forms, its vermicompost (VC) manifested none of these attributes. Rather the VC enhanced germination success, introduced plant-friendly physical features in the container media, increased biomass carbon, and was seen to promote early growth as reflected in several morphological and biochemical characteristics in plants which had received parthenium VC in comparison to those which had not. All these effects were statistically significant. Fourier Transform Infrared (FTIR) Spectrometry revealed that the phenols and the sesquiterpene lactones that are responsible for the negative allelopathic impact of parthenium were largely destroyed in the course of vermicomposting. FTIR spectra also indicated that lignin content of parthenium was reduced during its vermicomposting. The findings open up the possibility that several other invasives known for their negative allelopathy and toxicity may also produce vermicompost which may be plant-friendly and soil-friendly. It also makes it appear possible that the huge quantities of phytomass that is generated annually by parthenium can be gainfully utilized in producing organic fertilizer via vermicomposting, thereby providing a means of exercising some control over parthenium's rampant growth and invasion.
[Mh] Termos MeSH primário: Fertilizantes
Plântulas/crescimento & desenvolvimento
Solo
[Mh] Termos MeSH secundário: Abelmoschus/crescimento & desenvolvimento
Alelopatia
Animais
Cucumis/crescimento & desenvolvimento
Oligoquetos
Extratos Vegetais
Vigna/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fertilizers); 0 (Parthenium hysterophorus extract); 0 (Plant Extracts); 0 (Soil)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160528
[St] Status:MEDLINE


  9 / 178 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27155400
[Au] Autor:Hu C; Ham BK; El-Shabrawi HM; Alexander D; Zhang D; Ryals J; Lucas WJ
[Ad] Endereço:Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, 95616, USA.
[Ti] Título:Proteomics and metabolomics analyses reveal the cucurbit sieve tube system as a complex metabolic space.
[So] Source:Plant J;87(5):442-54, 2016 Sep.
[Is] ISSN:1365-313X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The plant vascular system, and specifically the phloem, plays a pivotal role in allocation of fixed carbon to developing sink organs. Although the processes involved in loading and unloading of sugars and amino acids are well characterized, little information is available regarding the nature of other metabolites in the sieve tube system (STS) at specific sites along the pathway. Here, we elucidate spatial features of metabolite composition mapped with phloem enzymes along the cucurbit STS. Phloem sap (PS) was collected from the loading (source), unloading (apical sink region) and shoot-root junction regions of cucumber, watermelon and pumpkin. Our PS analyses revealed significant differences in the metabolic and proteomic profiles both along the source-sink pathway and between the STSs of these three cucurbits. In addition, metabolite profiles established for PS and vascular tissue indicated the presence of distinct compositions, consistent with the operation of the STS as a unique symplasmic domain. In this regard, at various locations along the STS we could map metabolites and their related enzymes to specific metabolic pathways. These findings are discussed with regard to the function of the STS as a unique and highly complex metabolic space within the plant vascular system.
[Mh] Termos MeSH primário: Cucumis/metabolismo
Metabolômica/métodos
Proteínas de Plantas/metabolismo
Proteômica/métodos
[Mh] Termos MeSH secundário: Cucumis sativus/metabolismo
Floema/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171107
[Lr] Data última revisão:
171107
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160508
[St] Status:MEDLINE
[do] DOI:10.1111/tpj.13209


  10 / 178 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27149970
[Au] Autor:Uzma S; Azizullah A; Bibi R; Nabeela F; Muhammad U; Ali I; Rehman ZU; Häder DP
[Ad] Endereço:Department of Botany, Kohat University of Science and Technology (KUST), 26000, Kohat, Khyber Pakhtunkhwa, Pakistan.
[Ti] Título:Effects of industrial wastewater on growth and biomass production in commonly grown vegetables.
[So] Source:Environ Monit Assess;188(6):328, 2016 Jun.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In developing countries like Pakistan, irrigation of crops with industrial and municipal wastewater is a common practice. However, the impact of wastewater irrigation on vegetables growth has rarely been studied. Therefore, the present study was conducted to determine the effect of industrial wastewater on the germination and seedling growth of some commonly grown vegetables in Pakistan. Wastewater samples were collected from two different industries (marble industry and match alam factory) at Hayatabad Industrial Estate (HIE) in Peshawar, Pakistan, and their effect on different growth parameters of four vegetables including Hibiscus esculentus, Lactuca sativa, Cucumis sativus, and Cucumis melo was investigated. The obtained results revealed that wastewater from marble industry did not affect seed germination except a minor inhibition in H. esculentus. Effluents from match alam factory stimulated seed germination in C. melo and C. sativus but had no effect on seed germination in the other two vegetables. Wastewater increased root and shoot length in H. esculentus, L. sativa and C. melo, but decreased it in C. sativus. Similarly, differential effects of wastewater were observed on fresh and dry biomass of seedlings in all vegetables. It can be concluded that wastewater may have different effects on different crops, depending upon the nature of wastewater and sensitivity of a plant species to wastewater.
[Mh] Termos MeSH primário: Irrigação Agrícola/métodos
Resíduos Industriais
Verduras/crescimento & desenvolvimento
Águas Residuais
[Mh] Termos MeSH secundário: Abelmoschus/crescimento & desenvolvimento
Biomassa
Cucumis/crescimento & desenvolvimento
Germinação
Alface/crescimento & desenvolvimento
Paquistão
Raízes de Plantas/crescimento & desenvolvimento
Brotos de Planta/crescimento & desenvolvimento
Plântulas/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Industrial Waste); 0 (Waste Water)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160507
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-016-5338-8



página 1 de 18 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