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chlorophyll a/тутун
Врската е зачувана во таблата со исечоци
Страница 1 од 64 резултати
Diurnal and Circadian Rhythms in the Accumulation and Synthesis of mRNA for the Light-Harvesting Chlorophyll a/b-Binding Protein in Tobacco.
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The steady state level of mRNA for the light-harvesting chlorophyll a/b binding protein (LHCP) varies considerably during a day-night light cycle in expanding leaves of tobacco (Nicotiana tabacum, cv Wisconsin 38). The maximum (day) level is at least one hundred-fold higher than the minimum (night)
Organization and transcription of the gene family encoding chlorophyll a/b-binding proteins in Nicotiana sylvestris.
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Nine Lhcb1 genes encoding the light-harvesting chlorophyll a/b-binding proteins of photosystem II were isolated and characterized from Nicotiana sylvestris. Their nucleotide sequences are highly similar. Lhcb1 transcripts are accumulated in leaves and stems but not in roots and non-green cultured
Alterations in chlorophyll a/b binding proteins in Solanaceae cybrids.
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In this study we have constructed a number of plants (cybrids), in which the nuclear genome of Nicotiana plumbaginifolia is combined with the plastome of Atropa belladonna, or the nuclear genome of N. tabacum with plastomes of Lycium barbarum, Scopolia carniolica, Physochlaine officinalis or Nolana
Treatment of the thylakoid membrane with surfactants : assessment of effectiveness using the chlorophyll a absorption spectrum.
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Treatment of higher plant (Nicotiana tabacum L. var. Samsun) chloroplast thylakoid membranes with surfactants results in a shift of the chlorophyll a absorption maximum in the red spectral region from its in vivo value of 678.5 nanometers to shorter wavelengths. The magnitude of this shift is
Photocontrol of the Expression of Genes Encoding Chlorophyll a/b Binding Proteins and Small Subunit of Ribulose-1,5-Bisphosphate Carboxylase in Etiolated Seedlings of Lycopersicon esculentum (L.) and Nicotiana tabacum (L.).
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Phytochrome and the blue ultraviolet-A photoreceptor control light-induced expression of genes encoding the chlorophyll a/b binding protein of photosystem II and photosystem I and the genes for the small subunit of the ribulose-1,5-bisphosphate carboxylase in etiolated seedlings of Lycopersicon
Heterologous expression of moss light-harvesting complex stress-related 1 (LHCSR1), the chlorophyll a-xanthophyll pigment-protein complex catalyzing non-photochemical quenching, in Nicotiana sp.
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Oxygenic photosynthetic organisms evolved mechanisms for thermal dissipation of energy absorbed in excess to prevent formation of reactive oxygen species. The major and fastest component, called non-photochemical quenching, occurs within the photosystem II antenna system by the action of two
Polyamines stimulate non-photochemical quenching of chlorophyll a fluorescence in Scenedesmus obliquus.
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Polyamines (PAs) are small metabolites that are produced and oxidized in chloroplasts with an obscure mode of action. Recently, we showed that qE is stimulated by PAs in higher plants (Nicotiana tabacum) and in genetically modified plants with elevated thylakoid-associated PAs (Ioannidis and
Light-regulated and organ-specific expression of a wheat Cab gene in transgenic tobacco.
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Many of our most important crop plants are monocotyledons, including wheat, corn, rice and barley. No routine transformation system for monocotyledons has been reported, such as the Ti-mediated gene transfer system for dicotyledons facilitated by Agrobacterium tumefaciens. Indirect evidence suggests
Phytochrome Effects on the Relationship between Chlorophyll and Steady-State Levels of Thylakoid Polypeptides in Light-Grown Tobacco.
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The effects of phytochrome status on chlorophyll content and on steady-state levels of thylakoid proteins were investigated in green leaves of Nicotiana tabacum L. plants grown under white light. Far-red light given either as a pulse at the end of each photoperiod, or as a supplement to white light
Photoresponses of transgenic tobacco plants expressing an oat phytochrome gene.
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The physiological responses of transgenic tobacco (Nicotiana tabacum L.) plants that express high levels of an introduced oat (Avena sativa L.) phytochrome (phyA) gene to various light treatments are compared with those of wild-type (WT) plants. Seeds, etiolated seedlings, and light-grown plants
The plastome-encoded PsaJ subunit is required for efficient Photosystem I excitation, but not for plastocyanin oxidation in tobacco.
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The functions of several small subunits of the large photosynthetic multiprotein complex PSI (Photosystem I) are not yet understood. To elucidate the function of the small plastome-encoded PsaJ subunit, we have produced knockout mutants by chloroplast transformation in tobacco (Nicotiana tabacum).
Consequence of Absence of Nitrate Reductase Activity on Photosynthesis in Nicotiana plumbaginifolia Plants.
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Chlorate-resistant Nicotiana plumbaginifolia (cv Viviani) mutants were found to be deficient in the nitrate reductase apoprotein (NR(-)nia). Because they could not grow with nitrate as sole nitrogen source, they were cultivated as graftings on wild-type Nicotiana tabacum plants. The grafts of mutant
Action of an antiserum to alpha-tocoquinone on photosystem II-particle preparations of Nicotiana tabacum.
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An antiserum to alpha-tocoquinone was prepared by immunization of rabbits. Immunization was obtained by injection of a conjugate consisting of the hapten alpha-tocoquinone attached to methylated ovalbumin into the rabbit. The antiserum recognizes the 3,4-dimethyl-p-benzoquinone group of the molecule
Inactivation of a plastid evolutionary conserved gene affects PSII electron transport, life span and fitness of tobacco plants.
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Chloroplasts contain a plastoquinone-NADH-oxidoreductase (Ndh) complex involved in protection against stress and the maintenance of cyclic electron flow. Inactivation of the Ndh complex delays the development of leaf senescence symptoms. Chlorophyll a fluorescence measurements, blue native gel
Analysis of changes in minimal and maximal fluorescence yields with irradiance and o(2) level in tobacco leaf tissue.
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The responses of minimal and maximal fluorescence yields of chlorophyll a to irradiance of actinic white light were determined by pulse modulated fluorimetry in leaf discs from tobacco, Nicotiana tabacum, at 1.6, 20.5, and 42.0% (v/v) O(2). Steady-state maximal fluorescence yield (F(m)', measured
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