Base de dados : MEDLINE
Pesquisa : G02.111.158.937 [Categoria DeCS]
Referências encontradas : 21434 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 2144 ir para página                         

  1 / 21434 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29481573
[Au] Autor:Zhan Y; Marchand CH; Maes A; Mauries A; Sun Y; Dhaliwal JS; Uniacke J; Arragain S; Jiang H; Gold ND; Martin VJJ; Lemaire SD; Zerges W
[Ad] Endereço:Department of Biology & Centre for Structural and Functional Genomics, Concordia University, Montreal, Quebec, Canada.
[Ti] Título:Pyrenoid functions revealed by proteomics in Chlamydomonas reinhardtii.
[So] Source:PLoS One;13(2):e0185039, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Organelles are intracellular compartments which are themselves compartmentalized. Biogenic and metabolic processes are localized to specialized domains or microcompartments to enhance their efficiency and suppress deleterious side reactions. An example of intra-organellar compartmentalization is the pyrenoid in the chloroplasts of algae and hornworts. This microcompartment enhances the photosynthetic CO2-fixing activity of the Calvin-Benson cycle enzyme Rubisco, suppresses an energetically wasteful oxygenase activity of Rubisco, and mitigates limiting CO2 availability in aquatic environments. Hence, the pyrenoid is functionally analogous to the carboxysomes in cyanobacteria. However, a comprehensive analysis of pyrenoid functions based on its protein composition is lacking. Here we report a proteomic characterization of the pyrenoid in the green alga Chlamydomonas reinhardtii. Pyrenoid-enriched fractions were analyzed by quantitative mass spectrometry. Contaminant proteins were identified by parallel analyses of pyrenoid-deficient mutants. This pyrenoid proteome contains 190 proteins, many of which function in processes that are known or proposed to occur in pyrenoids: e.g. the carbon concentrating mechanism, starch metabolism or RNA metabolism and translation. Using radioisotope pulse labeling experiments, we show that pyrenoid-associated ribosomes could be engaged in the localized synthesis of the large subunit of Rubisco. New pyrenoid functions are supported by proteins in tetrapyrrole and chlorophyll synthesis, carotenoid metabolism or amino acid metabolism. Hence, our results support the long-standing hypothesis that the pyrenoid is a hub for metabolism. The 81 proteins of unknown function reveal candidates for new participants in these processes. Our results provide biochemical evidence of pyrenoid functions and a resource for future research on pyrenoids and their use to enhance agricultural plant productivity. Data are available via ProteomeXchange with identifier PXD004509.
[Mh] Termos MeSH primário: Chlamydomonas reinhardtii/metabolismo
Proteínas de Plantas/metabolismo
Proteômica
[Mh] Termos MeSH secundário: Chlamydomonas reinhardtii/fisiologia
Espectrometria de Massas
Fotossíntese
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Plant Proteins)
[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:180227
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185039


  2 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29447189
[Au] Autor:Saleem AR; Brunetti C; Khalid A; Della Rocca G; Raio A; Emiliani G; De Carlo A; Mahmood T; Centritto M
[Ad] Endereço:Department of Earth and Environmental Sciences, Bahria University Islamabad Campus, Islamabad, Pakistan.
[Ti] Título:Drought response of Mucuna pruriens (L.) DC. inoculated with ACC deaminase and IAA producing rhizobacteria.
[So] Source:PLoS One;13(2):e0191218, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Drought is one of the major constraints limiting agricultural production worldwide and is expected to increase in the future. Limited water availability causes significant effects to plant growth and physiology. Plants have evolved different traits to mitigate the stress imposed by drought. The presence of plant growth-promoting rhizobacteria (PGPR) could play an important role in improving plant performances and productivity under drought. These beneficial microorganisms colonize the rhizosphere of plants and increase drought tolerance by lowering ethylene formation. In the present study, we demonstrate the potential to improve the growth of velvet bean under water deficit conditions of two different strains of PGPR with ACCd (1-Aminocyclopropane-1-Carboxylate deaminase) activity isolated from rainfed farming system. We compared uninoculated and inoculated plants with PGPR to assess: a) photosynthetic performance and biomass; b) ACC content and ethylene emission from leaves and roots; c) leaf isoprene emission. Our results provided evidence that under drought conditions inoculation with PGPR containing the ACCd enzyme could improve plant growth compared to untreated plants. Ethylene emission from roots and leaves of inoculated velvet bean plants was significantly lower than uninoculated plants. Moreover, isoprene emission increased with drought stress progression and was higher in inoculated plants compared to uninoculated counterparts. These findings clearly illustrate that selected PGPR strains isolated from rainfed areas could be highly effective in promoting plant growth under drought conditions by decreasing ACC and ethylene levels in plants.
[Mh] Termos MeSH primário: Mucuna/metabolismo
Reguladores de Crescimento de Planta/metabolismo
Rhizobiaceae/metabolismo
[Mh] Termos MeSH secundário: Biomassa
Carbono-Carbono Liases/metabolismo
Secas
Etilenos/biossíntese
Mucuna/fisiologia
Fotossíntese
Desenvolvimento Vegetal
Reguladores de Crescimento de Planta/fisiologia
Raízes de Plantas/crescimento & desenvolvimento
Rhizobiaceae/genética
Rizosfera
Microbiologia do Solo
Água/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Ethylenes); 0 (Plant Growth Regulators); 059QF0KO0R (Water); 91GW059KN7 (ethylene); EC 3.5.99.7 (1-aminocyclopropane-1-carboxylate deaminase); EC 4.1.- (Carbon-Carbon Lyases)
[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:180216
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191218


  3 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28456460
[Au] Autor:Sasaki A; Mizuno AN
[Ad] Endereço:Department of Evolutionary Studies of Biosystems, SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan; Evolution and Ecology Program, International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria. Electronic address: sasaki_akira@soken.ac.jp.
[Ti] Título:Partitioning light spectra: Adaptive stratification of phytobenthic communities in Antarctic lakes.
[So] Source:J Theor Biol;424:1-10, 2017 Jul 07.
[Is] ISSN:1095-8541
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Competition for light has an important influence for phototrophic community structures, especially, along the perpendicular axis. Here we develop a mathematical model for perpendicular community buildup of phototrophic species that differ in light absorption spectra and compete for incident light. Details of photon capture efficiencies and the roles of photoinhibition were taken into consideration to define species' fitness. Our theory showed that, if there is strong light irradiation due, for example, to the high transparency of the water in freshwater lakes in Antarctica, protective absorption of light should occur near the surface and photosynthetic absorption should gradually increase with depth. These results were then validated in comparison with observed vertical distributions of pigments in phytobenthic-mat communities from Antarctic lakes.
[Mh] Termos MeSH primário: Lagos
Luz
Modelos Biológicos
Fotossíntese/fisiologia
Fitoplâncton/fisiologia
[Mh] Termos MeSH secundário: Regiões Antárticas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[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:170501
[St] Status:MEDLINE


  4 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28968924
[Au] Autor:Zvobgo G; LwalabaWaLwalaba J; Sagonda T; Mutemachani Mapodzeke J; Muhammad N; Haider Shamsi I; Zhang G
[Ad] Endereço:Department of Agronomy, College of Agriculture and Biotechnology, Key Laboratory of Crop Germplasm Resource, Zhejiang University, Hangzhou 310058, PR China.
[Ti] Título:Phosphate alleviates arsenate toxicity by altering expression of phosphate transporters in the tolerant barley genotypes.
[So] Source:Ecotoxicol Environ Saf;147:832-839, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The contribution of the phosphate transporters (PHTs) in uptake of arsenate (As ) and phosphate (P) is a widely recognized mechanism. Here we investigated how P regulates the uptake of As and the subsequent effects on growth and relative expression of PHTs. The study was conducted on 3 barley genotypes differing in As tolerance (ZDB160, As-tolerant; ZDB115, moderately tolerant; ZDB475, As-sensitive) using a hydroponic experiment. There were 3 As (0, 10 and 100µM) and 3P (0, 50 and 500µM) levels. The results showed that the negative effect of As stress on plant growth, photosynthesis and cell ultra-structure is As dose and barley genotype dependent, confirming the distinctly genotypic difference in As tolerance. As uptake and accumulation in plant tissues are closely associated with inhibited extent of growth and photosynthesis, with the tolerant genotype ZDB160 having lower As content than other two genotypes. The toxic effect caused by As stress could be alleviated by P addition, mainly due to reduced As uptake. Moreover, the tolerant genotype showed relatively lower expression PHTs than sensitive ones upon exposure to both As stress and P addition, suggesting regulation of PHTs expression is a major mechanism for relative uptake of As and P, in subsequence affecting As tolerance. Moreover, among 6 PHTs examined in this study, the expressions of PHT1.3, PHT1.4 and PHT1.6 showed the marked difference among the three barley genotypes in responses to As stress and P addition, indicating further research on the contribution of phosphate transporters to As and P uptake should be focused on these PHTs.
[Mh] Termos MeSH primário: Adaptação Biológica
Arseniatos/toxicidade
Regulação da Expressão Gênica de Plantas/efeitos dos fármacos
Hordeum/metabolismo
Proteínas de Transporte de Fosfato/genética
Fosfatos/farmacologia
Poluentes do Solo/toxicidade
[Mh] Termos MeSH secundário: Adaptação Biológica/genética
Arseniatos/metabolismo
Biomassa
Genótipo
Hordeum/genética
Hordeum/crescimento & desenvolvimento
Modelos Teóricos
Fosfatos/metabolismo
Fotossíntese/efeitos dos fármacos
Poluentes do Solo/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Arsenates); 0 (Phosphate Transport Proteins); 0 (Phosphates); 0 (Soil Pollutants)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171004
[St] Status:MEDLINE


  5 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28278105
[Au] Autor:Lu H; Han T; Zhang G; Ma S; Zhang Y; Li B; Cao W
[Ad] Endereço:a College of Water Resource and Civil Engineering , China Agriculture University , Beijing , People's Republic of China.
[Ti] Título:Natural light-micro aerobic condition for PSB wastewater treatment: a flexible, simple, and effective resource recovery wastewater treatment process.
[So] Source:Environ Technol;39(1):74-82, 2018 Jan.
[Is] ISSN:0959-3330
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Photosynthetic bacteria (PSB) have two sets of metabolic pathways. They can degrade pollutants through light metabolic under light-anaerobic or oxygen metabolic pathways under dark-aerobic conditions. Both metabolisms function under natural light-microaerobic condition, which demands less energy input. This work investigated the characteristics of PSB wastewater treatment process under that condition. Results showed that PSB had very strong adaptability to chemical oxygen demand (COD) concentration; with F/M of 5.2-248.5 mg-COD/mg-biomass, the biomass increased three times and COD removal reached above 91.5%. PSB had both advantages of oxygen metabolism in COD removal and light metabolism in resource recovery under natural light-microaerobic condition. For pollutants' degradation, COD, total organic carbon, nitrogen, and phosphorus removal reached 96.2%, 91.0%, 70.5%, and 92.7%, respectively. For resource recovery, 74.2% of C in wastewater was transformed into biomass. Especially, coexistence of light and oxygen promote N recovery ratio to 70.9%, higher than with the other two conditions. Further, 93.7% of N-removed was synthesized into biomass. Finally, CO emission reduced by 62.6% compared with the traditional process. PSB wastewater treatment under this condition is energy-saving, highly effective, and environment friendly, and can achieve pollution control and resource recovery.
[Mh] Termos MeSH primário: Eliminação de Resíduos Líquidos/métodos
Águas Residuais/microbiologia
[Mh] Termos MeSH secundário: Aerobiose
Análise da Demanda Biológica de Oxigênio
Luz
Fósforo
Fotossíntese
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Waste Water); 0 (Water Pollutants, Chemical); 27YLU75U4W (Phosphorus)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170310
[St] Status:MEDLINE
[do] DOI:10.1080/09593330.2017.1296027


  6 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28453685
[Au] Autor:Yang Y; Xu L; Feng Z; Cruz JA; Savage LJ; Kramer DM; Chen J
[Ad] Endereço:Department of Epidemiology and Biostatistics.
[Ti] Título:PhenoCurve: capturing dynamic phenotype-environment relationships using phenomics data.
[So] Source:Bioinformatics;33(9):1370-1378, 2017 05 01.
[Is] ISSN:1367-4811
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Motivation: Phenomics is essential for understanding the mechanisms that regulate or influence growth, fitness, and development. Techniques have been developed to conduct high-throughput large-scale phenotyping on animals, plants and humans, aiming to bridge the gap between genomics, gene functions and traits. Although new developments in phenotyping techniques are exciting, we are limited by the tools to analyze fully the massive phenotype data, especially the dynamic relationships between phenotypes and environments. Results: We present a new algorithm called PhenoCurve, a knowledge-based curve fitting algorithm, aiming to identify the complex relationships between phenotypes and environments, thus studying both values and trends of phenomics data. The results on both real and simulated data showed that PhenoCurve has the best performance among all the six tested methods. Its application to photosynthesis hysteresis pattern identification reveals new functions of core genes that control photosynthetic efficiency in response to varying environmental conditions, which are critical for understanding plant energy storage and improving crop productivity. Availability and Implementation: Software is available at phenomics.uky.edu/PhenoCurve. Contact: chen.jin@uky.edu or kramerd8@cns.msu.edu. Supplementary information: Supplementary data are available at Bioinformatics online.
[Mh] Termos MeSH primário: Biologia Computacional/métodos
Interação Gene-Ambiente
Fotossíntese
Plantas/genética
Software
[Mh] Termos MeSH secundário: Algoritmos
Plantas/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1093/bioinformatics/btw673


  7 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29343713
[Au] Autor:Hare VJ; Loftus E; Jeffrey A; Ramsey CB
[Ad] Endereço:Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, 1 South Parks Road, Oxford, OX1 3TG, UK. vincent.john.hare@gmail.com.
[Ti] Título:Atmospheric CO effect on stable carbon isotope composition of terrestrial fossil archives.
[So] Source:Nat Commun;9(1):252, 2018 01 17.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The C/ C ratio of C plant matter is thought to be controlled by the isotopic composition of atmospheric CO and stomatal response to environmental conditions, particularly mean annual precipitation (MAP). The effect of CO concentration on C/ C ratios is currently debated, yet crucial to reconstructing ancient environments and quantifying the carbon cycle. Here we compare high-resolution ice core measurements of atmospheric CO with fossil plant and faunal isotope records. We show the effect of pCO during the last deglaciation is stronger for gymnosperms (-1.4 ± 1.2‰) than angiosperms/fauna (-0.5 ± 1.5‰), while the contributions from changing MAP are -0.3 ± 0.6‰ and -0.4 ± 0.4‰, respectively. Previous studies have assumed that plant C/ C ratios are mostly determined by MAP, an assumption which is sometimes incorrect in geological time. Atmospheric effects must be taken into account when interpreting terrestrial stable carbon isotopes, with important implications for past environments and climates, and understanding plant responses to climate change.
[Mh] Termos MeSH primário: Atmosfera/química
Dióxido de Carbono/química
Isótopos de Carbono/análise
Clima
Fósseis
Plantas/metabolismo
[Mh] Termos MeSH secundário: Ciclo do Carbono
Isótopos de Carbono/química
Mudança Climática
Fotossíntese
Chuvas
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Carbon Isotopes); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180119
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02691-x


  8 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29311545
[Au] Autor:Chrachri A; Hopkinson BM; Flynn K; Brownlee C; Wheeler GL
[Ad] Endereço:Marine Biological Association, Plymouth, PL1 2PB, UK.
[Ti] Título:Dynamic changes in carbonate chemistry in the microenvironment around single marine phytoplankton cells.
[So] Source:Nat Commun;9(1):74, 2018 01 08.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Photosynthesis by marine diatoms plays a major role in the global carbon cycle, although the precise mechanisms of dissolved inorganic carbon (DIC) uptake remain unclear. A lack of direct measurements of carbonate chemistry at the cell surface has led to uncertainty over the underlying membrane transport processes and the role of external carbonic anhydrase (eCA). Here we identify rapid and substantial photosynthesis-driven increases in pH and [CO ] primarily due to the activity of eCA at the cell surface of the large diatom Odontella sinensis using direct simultaneous microelectrode measurements of pH and CO along with modelling of cell surface inorganic carbonate chemistry. Our results show that eCA acts to maintain cell surface CO concentrations, making a major contribution to DIC supply in O. sinensis. Carbonate chemistry at the cell surface is therefore highly dynamic and strongly dependent on cell size, morphology and the carbonate chemistry of the bulk seawater.
[Mh] Termos MeSH primário: Carbonatos/metabolismo
Microambiente Celular
Diatomáceas/metabolismo
Fitoplâncton/metabolismo
[Mh] Termos MeSH secundário: Transporte Biológico
Carbono/química
Carbono/metabolismo
Dióxido de Carbono/química
Dióxido de Carbono/metabolismo
Carbonatos/química
Anidrases Carbônicas/metabolismo
Diatomáceas/citologia
Concentração de Íons de Hidrogênio
Modelos Biológicos
Fotossíntese
Fitoplâncton/citologia
Água do Mar/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Carbonates); 142M471B3J (Carbon Dioxide); 7440-44-0 (Carbon); EC 4.2.1.1 (Carbonic Anhydrases)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180110
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02426-y


  9 / 21434 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28741669
[Au] Autor:Che-Othman MH; Millar AH; Taylor NL
[Ad] Endereço:ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, WA 6009, Australia.
[Ti] Título:Connecting salt stress signalling pathways with salinity-induced changes in mitochondrial metabolic processes in C3 plants.
[So] Source:Plant Cell Environ;40(12):2875-2905, 2017 Dec.
[Is] ISSN:1365-3040
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Salinity exerts a severe detrimental effect on crop yields globally. Growth of plants in saline soils results in physiological stress, which disrupts the essential biochemical processes of respiration, photosynthesis, and transpiration. Understanding the molecular responses of plants exposed to salinity stress can inform future strategies to reduce agricultural losses due to salinity; however, it is imperative that signalling and functional response processes are connected to tailor these strategies. Previous research has revealed the important role that plant mitochondria play in the salinity response of plants. Review of this literature shows that 2 biochemical processes required for respiratory function are affected under salinity stress: the tricarboxylic acid cycle and the transport of metabolites across the inner mitochondrial membrane. However, the mechanisms by which components of these processes are affected or react to salinity stress are still far from understood. Here, we examine recent findings on the signal transduction pathways that lead to adaptive responses of plants to salinity and discuss how they can be involved in and be affected by modulation of the machinery of energy metabolism with attention to the role of the tricarboxylic acid cycle enzymes and mitochondrial membrane transporters in this process.
[Mh] Termos MeSH primário: Mitocôndrias/metabolismo
Oxigênio/metabolismo
Plantas/metabolismo
Transdução de Sinais
Estresse Fisiológico
[Mh] Termos MeSH secundário: Fotossíntese/fisiologia
Transpiração Vegetal/fisiologia
Salinidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
S88TT14065 (Oxygen)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170726
[St] Status:MEDLINE
[do] DOI:10.1111/pce.13034


  10 / 21434 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29475266
[Au] Autor:Wu T; Lin Y; Zheng L; Guo Z; Xu J; Liang S; Liu Z; Lu Y; Shih TM; Chen Z
[Ti] Título:Analyses of multi-color plant-growth light sources in achieving maximum photosynthesis efficiencies with enhanced color qualities.
[So] Source:Opt Express;26(4):4135-4147, 2018 Feb 19.
[Is] ISSN:1094-4087
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:An optimal design of light-emitting diode (LED) lighting that benefits both the photosynthesis performance for plants and the visional health for human eyes has drawn considerable attention. In the present study, we have developed a multi-color driving algorithm that serves as a liaison between desired spectral power distributions and pulse-width-modulation duty cycles. With the aid of this algorithm, our multi-color plant-growth light sources can optimize correlated-color temperature (CCT) and color rendering index (CRI) such that photosynthetic luminous efficacy of radiation (PLER) is maximized regardless of the number of LEDs and the type of photosynthetic action spectrum (PAS). In order to illustrate the accuracies of the proposed algorithm and the practicalities of our plant-growth light sources, we choose six color LEDs and German PAS for experiments. Finally, our study can help provide a useful guide to improve light qualities in plant factories, in which long-term co-inhabitance of plants and human beings is required.
[Mh] Termos MeSH primário: Cor
Iluminação/instrumentação
Fotossíntese/fisiologia
Desenvolvimento Vegetal/fisiologia
Semicondutores
[Mh] Termos MeSH secundário: Algoritmos
Modelos Teóricos
Plantas/efeitos da radiação
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180225
[St] Status:MEDLINE
[do] DOI:10.1364/OE.26.004135



página 1 de 2144 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