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Assimilation of exogenous cyanide cross talk in Oryza sativa L. to the key nodes in nitrogen metabolism

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Exogenous cyanide (CN^-) effects on nitrogen (N) uptake, transport, and assimilation in rice seedlings were investigated at the biochemical and molecular levels. Seedlings were treated with either a 2-d or 4-d supply of potassium cyanide (KCN) in the nutrient solution containing nitrate

Evidence of iron cyanides as supplementary nitrogen source to rice seedlings.

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The effect of iron cyanides on activities of nitrate reductase (NR) and glutamine synthetase (GS) of plants was investigated. Young rice seedlings (Oryza sativa L. cv. XZX 45) were grown in the nutrient solutions containing KNO(3) or NH(4)Cl and treated with ferro-cyanide [K(4)Fe(CN)(6)] or

Responses of free amino acids in rice seedlings during cyanide metabolism.

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Responses of free amino acids to botanical assimilation of free cyanide were investigated. Young rice seedlings (Oryza sativa L. cv. XZX 45) were grown in nutrient solution amended with free cyanide (KCN). Cyanide was analyzed in solution as well as in plant materials to estimate the

On the role of β-cyanoalanine synthase (CAS) in metabolism of free cyanide and ferri-cyanide by rice seedlings.

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A study was conducted to investigate the contribution of β-cyanoalanine synthase (CAS) to the botanical metabolism of free cyanide and iron cyanides. Seedlings of rice (Oryza sativa L. cv. XZX 45) were grown hydroponically and then amended with free cyanide (KCN) or ferri-cyanide [K(3)Fe(CN)(6)]

A possible new mechanism involved in ferro-cyanide metabolism by plants.

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OBJECTIVE Ferro-cyanide is one of the commonly found species at cyanide-contaminated soils and groundwater. Unlike botanical metabolism of KCN via the β-cyanoalanine pathway, processes involved in the plant-mediated assimilation of ferro-cyanide are still unclear. The objective of this study was to

Cloning and characterization of catalases from rice, Oryza sativa L.

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Catalase is the major H(2)O(2)-scavenging enzyme in all aerobic organisms. From the cDNA sequences of three rice (Oryza sativa L.) genes that encode for predicted catalases (OsCatA, OsCatB, and OsCatC), complete ORFs were subcloned into pET21a and expressed as (His)(6)-tagged proteins in Escherichia

The reaction of mitochondria in the coleoptiles of rice (Oryza sativa L.) with diaminobenzidine.

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Diaminobenzidine, DAB, was applied to segments of aerobically and anaerobically grown coleoptiles of rice, Oryza sativa L., with the object of studying the location of cytochrome oxidase at the electron-microscope level. A specific staining of mitochondrial cristae and inner membrane was obtained,

Cyanide, a coproduct of plant hormone ethylene biosynthesis, contributes to the resistance of rice to blast fungus.

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Rice (Oryza sativa) plants carrying the Pi-i resistance gene to blast fungus Magnaporthe oryzae restrict invaded fungus in infected tissue via hypersensitive reaction or response (HR), which is accompanied by rapid ethylene production and formation of small HR lesions. Ethylene biosynthesis has been

Microarray-based expression analysis of phytohormone-related genes in rice seedlings during cyanide metabolism.

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Plants exhibit highly coordinated, dynamic reactions to various abiotic stressors. As cyanide is a non-essential element for plant growth, entry inside plants can exert toxicity at multiple levels. In plant, hormone plays a pivot role under stress conditions. The fluctuations of stress-responsive

Seed dormancy in red rice : v. Response to azide, hydroxylamine, and cyanide.

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The activity of NaN(3) (0.5 millimolar), hydroxylamine-HCl (10-18 millimolar), and potassium cyanide (1 millimolar) as dormancy-breaking agents of dehulled red rice (Oryza sativa) is pH-dependent such that medium pH values favoring formation of the uncharged chemical species resulted in the highest

Cell death of rice roots under salt stress may be mediated by cyanide-resistant respiration.

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Treatment with solutions containing high concentrations of NaCl (200 or 300 mM) induced cell death in rice (Oryza sativa L.) roots, as well as the application of exogenous hydrogen peroxide (H2O2). Moreover, the pretreatment with dimethylthiourea (DMTU), a scavenger of H2O2, partially alleviated the

Season Affects Yield and Metabolic Profiles of Rice (Oryza sativa) under High Night Temperature Stress in the Field.

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Rice (Oryza sativa) is the main food source for more than 3.5 billion people in the world. Global climate change is having a strong negative effect on rice production. One of the climatic factors impacting rice yield is asymmetric warming, i.e., the stronger increase in nighttime as compared

Activities of nitrate reductase and glutamine synthetase in rice seedlings during cyanide metabolism.

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A study was conducted to investigate activities of nitrate reductase (NR) and glutamine synthetase (GS) in plants during cyanide metabolism. Young rice seedlings (Oryza sativa L. cv. XZX 45) were grown in the nutrient solutions containing KNO(3) or NH(4)Cl and treated with free cyanide (KCN).

Characterization of cadmium uptake and translocation in a cadmium-sensitive mutant of rice (Oryza sativa L. ssp. japonica).

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To understand the physiological mechanism that confers Cd sensitivity/tolerance, Cd uptake and translocation by Cd-sensitive mutant and wild-type rice seedlings were characterized using radioactive tracer. Time-dependent Cd accumulation during 210 min was 1.8-fold higher in roots of the mutant than

Fungal Disease Prevention in Seedlings of Rice (Oryza sativa) and Other Grasses by Growth-Promoting Seed-Associated Endophytic Bacteria from Invasive Phragmites australis.

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Non-cultivated plants carry microbial endophytes that may be used to enhance development and disease resistance of crop species where growth-promoting and protective microbes may have been lost. During seedling establishment, seedlings may be infected by several fungal pathogens that are seed or

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