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10 resultater
Enhanced resistance to rice blast and sheath blight in rice (oryza sativa L.) by expressing the oxalate decarboxylase protein Bacisubin from Bacillus subtilis.
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Oxalate decarboxylase (OxDC), catalyzing the degradation of oxalic acid, is widely distributed in varieties of organisms. In this study, an oxalate decarboxylase gene from Bacillus subtilis strain BS-916, Bacisubin, was transformed into rice variety Nipponbare to generate transgenic rice with
Relationship between disease resistance and rice oxalate oxidases in transgenic rice.
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Differential expression of rice oxalate oxidase genes (OsOxO1-4) in rice leaves (Oryza sativa L.) in response to biotic stress was assayed using RT-PCR. OsOxO4 was induced transiently at 12 h in plants inoculated with the pathogens of bacterial blight and that of the wounding control. Inoculation
Metabolome analysis of rice leaves to obtain low-oxalate strain from ion beam-mutagenised population
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Introduction: Rice leaves and stems, which can be used as rice straw for livestock feed, accumulate soluble oxalate. The oxalate content often reaches 5% of the dry weight leaves. Excess uptake of oxalate-rich plants causes mineral
Effect of intermediates on ascorbic acid and oxalate biosynthesis of rice and in relation to its stress resistance.
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Rice (Oryza sativa L.) roots were fed with L-ascorbic acid (AsA) and its putative precursors to observe AsA and oxalate concentrations and the resistance of rice to chilling, water stress, and Al toxicity. AsA concentration was significantly enhanced in both shoots and roots of rice seedlings by
Effect of cadmium stress on inorganic and organic components in xylem sap of high cadmium accumulating rice line (Oryza sativa L.).
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Physiological properties involved in cadmium (Cd) transport were investigated in the high Cd accumulating rice line (Lu527-8) in comparison with the normal rice line (Lu527-4) through a soil culture experiment. The results showed that Cd contents in xylem saps of Lu527-8 were 1.68-2.55 times higher
Ascorbate metabolism in rice genotypes differing in zinc efficiency.
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Effects of zinc (Zn) deficiency on shoot metabolites were investigated in contrasting rice (Oryza sativa L.) genotypes with special focus on ascorbic acid (AsA) biosynthesis, recycling, and catabolism. The genotypes IR74 (sensitive) and RIL46 (tolerant) were subjected to -Zn and control treatments
Integration of cerium chemical forms and subcellular distribution to understand cerium tolerance mechanism in the rice seedlings.
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Rare earth elements (REEs) accumulate in the soil and ecosystem. Cerium (Ce) is one of the main additives in REE-containing fertilizers. However, little information is available on Ce distribution patterns and chemical forms in rice. The subcellular distribution and chemical forms of Ce were
Growth and cell wall changes in rice coleoptiles : Fractionation of cell wall and changes in noncellulosic polysaccharides during intact growth.
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A fractionation of non-cellulosic sugars of Oryza sativa L. coleoptile cell walls was carried out and the composition of each fraction was studied during coleoptile growth.Percentages of fractions extracted with boiling water and with oxalate (pectic substances) were almost constant throughout
Identification of rice varieties with high tolerance or sensitivity to lead and characterization of the mechanism of tolerance.
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Pb inhibits plant growth. To study Pb tolerance in rice (Oryza sativa), we screened 229 varieties for Pb tolerance or sensitivity. Three-day-old seedlings were treated for 12 d with 20 microM Pb solution. Based on the dry weight of the root, three Pb-tolerant (var CH-55, var KH-2J, var Kumnung) and
Different responses in metallothionein gene expression and antioxidative enzyme activity lead to more ROS accumulation in rice exposed to Tl(III) than to Tl(I)
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This is the first study to investigate the reduction mechanism of Tl (III) to Tl(I) in the presence of plants, especially rice. Smaller plant density could effectively reduce the content of organic acids in the hydroponic system to keep the stability of Tl(III). As the plant density was reduced from
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