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water/tobaksläktet
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Sida 1 från 438 resultat
Expression of plasma membrane water channel genes under water stress in Nicotiana excelsior.
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Deduced amino acid sequences encoded by the cDNAs related to the MIP gene family from Nicotiana excelsior were characterized. Phylogenetic characterization of the products of corresponding genes named NeMip1, NeMip2, and NeMip3 strongly suggested that they are water channel proteins localized in the
Water potential gradients in field tobacco.
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A pressure chamber was used to establish the vertical gradients of leaf water potential (Psi(Leaf)) and stem water potential (Psi(Stem)) in field-grown tobacco (Nicotiana tabacum L. var. Havanna seed 211) at three different times of day. Leaves enclosed in polyethylene bags and aluminum foil the
Stomatal Behavior and Water Status of Maize, Sorghum, and Tobacco under Field Conditions: I. At High Soil Water Potential.
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Diurnal changes in the vertical profiles of irradiance incident upon the adaxial leaf surface (I), stomatal resistance (r(s)), leaf water potential (psi), osmotic potential (pi), and turgor potential (P) were followed concurrently in crops of maize (Zea mays L. var. Pa 602A), sorghum (Sorghum
Stomatal Behavior and Water Status of Maize, Sorghum, and Tobacco under Field Conditions: II. At Low Soil Water Potential.
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Diurnal changes in the vertical profiles of irradiance incident upon the adaxial leaf surface (I), leaf resistance (r(1)), leaf water potential (psi), osmotic potential (pi), and turgor potential (P) were followed concurrently in crops of maize (Zea mays L. cv. Pa602A), sorghum (Sorghum bicolor [L.]
Response to mild water stress in transgenic Pssu-ipt tobacco.
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The response of antioxidant enzymes to cyclic drought was studied in control non-transformed tobacco (Nicotiana tabacum L. cv. Petit Havana SR1) and two types of transgenic Pssu-ipt tobacco (grafted on wild rootstock and poorly rooted progeny of F1 generation) grown under different conditions of
Functions of the water soluble chlorophyll-binding protein in plants.
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Functional aspects of water soluble chlorophyll-binding protein (WSCP) in plants were investigated during the courses of leaf senescence, chlorophyll biogenesis, stress response and photoprotection. The cDNA sequence encoding WSCP from cauliflower was cloned into a binary vector to facilitate
Decreased Rubisco activity during water stress is not induced by decreased relative water content but related to conditions of low stomatal conductance and chloroplast CO2 concentration.
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Rubisco activity decreases under water stress, for reasons as yet unclear. Here, the covariation of stomatal conductance (gs) and relative water content (RWC), often observed during water stress, was impaired to assess the separate effects of these factors on Rubisco activity. Three different
Chloride regulates leaf cell size and water relations in tobacco plants.
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Chloride (Cl(-)) is a micronutrient that accumulates to macronutrient levels since it is normally available in nature and actively taken up by higher plants. Besides a role as an unspecific cell osmoticum, no clear biological roles have been explicitly associated with Cl(-) when accumulated to
Cytokinin-dependent photorespiration and the protection of photosynthesis during water deficit.
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We investigated the effects of P(SARK)IPT (for Senescence-Associated Receptor KinaseIsopentenyltransferase) expression and cytokinin production on several aspects of photosynthesis in transgenic tobacco (Nicotiana tabacum cv SR1) plants grown under optimal or restricted (30% of optimal) watering
Water and salt stresses, kinetin and protein synthesis in tobacco leaves.
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The capacity of tobacco (Nicotiana rustica) leaf discs to incorporate l-leucine (14)C into proteins was measured. Leaf discs were obtained from plants which experienced soil water depletion, or which were exposed to a saline or osmotic stress in the root medium. The stresses were brief of relatively
The First Report of Cucumber Mosaic Virus Infecting Water Chestnut in China.
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Water chestnut (Eleocharis dulcis), which is cultivated worldwide today, first originated in India and China. It is a popular seasonal aquatic vegetable valuable to people for its sweet crisp taste and rich nutrition. In October 2012, field-grown water chestnut seedlings (E. dulcis) showing mosaic,
Pollen germination is impeded by tap water.
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Pollen germination in vitro is totally inhibited in tobacco (Nicotiana tabacum) and other species if tap water is used to prepare the germination medium. This effect is already fully present if tap water accounts for only 25% of the medium. Furthermore, the pollen grains deteriorate rapidly and the
Morpho-physiological and proteomic responses to water stress in two contrasting tobacco varieties.
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To gain insight into the molecular mechanisms underpinning tobacco (Nicotiana tabacum) tolerance to drought stress, we integrated anatomical, physiological, and proteomic analyses of drought-tolerant (Yuyan6, [Y6]) and -sensitive (Yunyan87 [Y87]) varieties. In comparison to Y87, Y6 exhibited higher
[Glycinebetaine applied through roots protects the photosynthetic apparatus of tobacco seedlings under water stress].
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Two tobacco (Nicotiana tabacum L.) cultivars (DHJ5210 and ZY100) with different drought tolerance were used to study the photosynthetic response to different water stress and the effects of glycinebetaine applied through roots on photosynthetic capacity. The physiological mechanisms of the
Do phosphoinositides regulate membrane water permeability of tobacco protoplasts by enhancing the aquaporin pathway?
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CONCLUSIONS
Enhancing the membrane content of PtdInsP 2 , the already-recognized protein-regulating lipid, increased the osmotic water permeability of tobacco protoplasts, apparently by increasing the abundance of active aquaporins in their membranes. While phosphoinositides are implicated in cell
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