l arginine/tobak

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Amino Acid Transport in Suspension-Cultured Plant Cells : III. COMMON CARRIER SYSTEM FOR THE UPTAKE OF l-ARGININE, l-ASPARTIC ACID, l-HISTIDINE, l-LEUCINE, AND l-PHENYLALANINE.

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The transport of l-arginine (l-Arg), l-aspartic acid (l-Asp), l-histidine (l-His), and l-phenylalanine (l-Phe) has been investigated in suspension cultures of Nicotiana tabacum cv. Wisconsin 38 cells. Uptake of these amino acids is pH- and energy-dependent, concentrative (except for l-Asp),

Biochemical plant responses to ozone : I. Differential induction of polyamine and ethylene biosynthesis in tobacco.

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Polyamine metabolism was examined in tobacco (Nicotiana tabacum L.) exposed to a single ozone treatment (5 or 7 hours) and then postcultivated in pollutant-free air. The levels of free and conjugated putrescine were rapidly increased in the ozone-tolerant cultivar Bel B and remained high for 3 days.

Laser photoacoustic detection allows in planta detection of nitric oxide in tobacco following challenge with avirulent and virulent Pseudomonas syringae Pathovars.

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We demonstrate the use of laser photoacoustic detection (LPAD) as a highly sensitive method to detect in planta nitric oxide ((*)NO) production from tobacco (Nicotiana tabacum). LPAD calibration against (*)NO gas demonstrated a linear relationship over 2 orders of magnitude with a detection

Naturally occurring neuronal NO-synthase inactivators found in Nicotiana tabacum (Solanaceae) and other plants.

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NO-synthase (NOS) is a heme-containing enzyme that catalyzes the oxidation of L-arginine to nitric oxide, an important cellular signaling molecule. Recently, it was found that aqueous extracts of tobacco cigarettes cause the inactivation of the neuronal isoform of NOS (nNOS) and that this may

Nitric oxide interacts with salicylate to regulate biphasic ethylene production during the hypersensitive response.

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C(2)H(4) is associated with plant defense, but its role during the hypersensitive response (HR) remains largely uncharacterized. C(2)H(4) production in tobacco (Nicotiana tabacum) following inoculation with HR-eliciting Pseudomonas syringae pathovars measured by laser photoacoustic detection was

Nitric oxide modulates cadmium influx during cadmium-induced programmed cell death in tobacco BY-2 cells.

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Nitric oxide (NO) is a bioactive gas and functions as a signaling molecule in plants exposed to diverse biotic and abiotic stresses including cadmium (Cd(2+)). Cd(2+) is a non-essential and toxic heavy metal, which has been reported to induce programmed cell death (PCD) in plants. Here, we

Regulation of sulfate uptake by amino acids in cultured tobacco cells.

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The sulfur requirements of tobacco (Nicotiana tabacum L. var. Xanthi) XD cells grown in chemically defined liquid media can be satisfied by sulfate, thiosulfate, l-cyst(e)ine, l-methionine or glutathione, and somewhat less effectively by d-cyst (e) ine, d-methionine or dl-homocyst (e)ine. Sulfate

SNF1-related protein kinases type 2 are involved in plant responses to cadmium stress.

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Cadmium ions are notorious environmental pollutants. To adapt to cadmium-induced deleterious effects plants have developed sophisticated defense mechanisms. However, the signaling pathways underlying the plant response to cadmium are still elusive. Our data demonstrate that SnRK2s (for SNF1-related

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