Photoautotrophic
Mostrando 1-12 de 115 artigos, teses e dissertações.
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1. Genome-Wide Assessment of Putative Superoxide Dismutases in Unicellular and Filamentous Cyanobacteria
Abstract Cyanobacteria are photoautotrophic prokaryotes capable to grow in diverse ecological habitats, originated 2.5-3.5 billion years ago and were first to produce oxygen. Since then superoxide dismutases (SOD) acquired great significance due to their ability to catalyze detoxification of byproducts of oxygenic photosynthesis i.e. superoxide radicals. In
Braz. arch. biol. technol.. Publicado em: 20/12/2019
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2. Comparison of photoautotrophic and mixotrophic cultivation of microalgae Messastrum gracile (Chlorophyceae) in alternative culture media
Resumo O crescimento e as condições biológicas da microalga Messastrum gracile foram avaliados para comparar o efeito do cultivo foto-autotrófico e mixotrófico na produção de biomassa e condições químicas em meios de cultura comercial e de macrófitas. A taxa de crescimento (k) de M. gracile foi diferente entre os meios de cultura, sendo maior no c
Braz. J. Biol.. Publicado em: 02/12/2019
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3. Propagação in vitro de Anacardium othonianum rizz., uma espécie frutífera e medicinal do cerrado / In vitro propagation of Anacardium othonianum rizz., a savannah fruiting and medicinal species
Anacardium othonianum Rizz., known as caju de árvore do cerrado, is a fruiting and medicinal species native of the savannah ecosystem, with great economic potential. Since agricultural expansion in the savannah was followed by the reduction of native vegetation, micro propagation has significantly contributed for the propagation of several species, resultin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/03/2010
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4. Grafting and propagation in vitro of fafia [Pfaffia glomerata (Spreng.) Pedersen] / Enxertia e propagação in vitro de fáfia [Pfaffia glomerata (Spreng.) Pedersen]
Pfaffia glomerata, popularmente conhecida como Ginseng brasileiro, é uma importante espécie medicinal cuja demanda no mercado e a forma de extrativismo levaram a sua inclusão na lista de espécies prioritárias para a conservação. Apresenta grande diversidade genética entre suas populações naturais, sendo essa variabilidade tanto na produção de bio
Publicado em: 2008
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5. Levantamento da comunidade de cianobactérias em trechos do Rio Turvo Sujo, localizados nas proximidades da cidade de Viçosa, MG / Cyanobacteria community survey in areas of the Turvo Sujo River, located in the proximities of the city of Vicosa, MG
Water quality found in several regions of the world have revealed the neglectance in which industrial, urban and agricultural discharges have been treated which leads, constantly, to the accelerated growth of cyanobacteria strains. The aim of this study was to assess the occurrence of cyanobacteria in the Turvo Sujo River, one of the responsible rivers for t
Publicado em: 2007
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6. Photo-autotrophic micropropagation of blackberry (Rubus spp.) and raspberry (Rubus idaeus L.) by using natural light. / Micropropagação fotoautotrófica de amoreira-preta (Rubus spp.) e framboeseira (Rubus idaeus L.) com a utilização de luz natural.
The success of mass micropropagation of fruit trees may be reached by using plant tissues culture techniques, since this has showed efficient results on seedlings production with high quality and health. However, for the commercial viability of micropropagation application in the field of horticulture and how this might compete with traditional methods of pr
Publicado em: 2006
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7. The Malic Enzyme Is Required for Optimal Photoautotrophic Growth of Synechocystis sp. Strain PCC 6803 under Continuous Light but Not under a Diurnal Light Regimen
A mutation was recovered in the slr0721 gene, which encodes the decarboxylating NADP+-dependent malic enzyme in the cyanobacterium Synechocystis sp. strain PCC 6803, yielding the mutant 3WEZ. Under continuous light, 3WEZ exhibits poor photoautotrophic growth while growing photoheterotrophically on glucose at rates nearly indistinguishable from wild-type rate
American Society for Microbiology.
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8. Induction of anaerobic, photoautotrophic growth in the cyanobacterium Oscillatoria limnetica.
Anaerobic photoautotrophic growth of the cyanobacterium Oscillatoria limnetica was demonstrated under nitrogen in the presence of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (5micron), a constant concentration of Na2S (2.5 mM), and constant pH (7.3). The photoanaerobic growth rate (2 days doubling time) was similar to that obtained under oxygenic photoautotrophi
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9. Four Novel Genes Required for Optimal Photoautotrophic Growth of the Cyanobacterium Synechocystis sp. Strain PCC 6803 Identified by In Vitro Transposon Mutagenesis
Four novel Synechocystis sp. strain PCC 6803 genes (sll1495, sll0804, slr1306, and slr1125) which encode hypothetical proteins were determined by transposon mutagenesis to be required for optimal photoautotrophic growth. Mutations were also recovered in ccmK4, a carboxysome coat protein homologue, and me, the decarboxylating NADP+-dependent malic enzyme. Thi
American Society for Microbiology.
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10. Kinetics of Glucose Incorporation by Aphanocapsa 6714
Photoautotrophic metabolism of CO2 was compared with glucose metabolism in the facultative unicellular blue-green alga, Aphanocapsa 6714. Glucose-fed cells incorporated more 14C into phosphorylated sugar intermediates of the reductive and oxidative pentose phosphate cycles than autotrophic cells. The relative increases were: 140-fold in dark cells; 32-fold i
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11. Green Roots: Photosynthesis and Photoautotrophy in an Underground Plant Organ.
The potential for photosynthetic and photoautotrophic growth was studied in hairy root cultures of Asteraceae and Solanaceae species. Upon transfer to light, initially heterotrophic root cultures of Acmella oppositifolia and Datura innoxia greened rapidly, differentiated chloroplasts, and developed light-dependent CO2 fixation in the cortical cells. Photosyn
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12. Light Stress and Oxidative Cell Damage in Photoautotrophic Cell Suspension of Euphorbia characias L.
A photoautotrophic cell-suspension culture of Euphorbia characias L. grown at 70 [mu]mol photons m-2 s-1 was very sensitive to light stress: the gross photosynthesis measured by using a mass spectrometric 16O2/18O2 isotope technique showed a fast decrease at a rather low light intensity of 100 [mu]mol photons m-2 s-1, far below the photosynthetic saturation