H. Iwamura

Publications175
h-index34
Citations3,185
Highly Influential Citations95
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Three genomes differentially contribute to the biosynthesis of benzoxazinones in hexaploid wheat.
Hexaploid wheat (Triticum aestivum) accumulates benzoxazinones (Bxs) as defensive compounds. Previously, we found that five Bx biosynthetic genes, TaBx1-TaBx5, are located on each of the three… Expand
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Induced accumulation of 2-hydroxy-4,7-dimethoxy-1,4-benzoxazin-3-one glucoside (HDMBOA-Glc) in maize leaves.
Accumulation of 2-(2-hydroxy-4,7-dimethoxy-1,4-benzoxazin-3-one)-beta-D-glucopyranose (HDMBOA-Glc) was induced in maize leaves by treatment with CuCl2, chitopentaose, penta-N-acetylchitopentaose, or… Expand
  • 56
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Rearrangement of the genes for the biosynthesis of benzoxazinones in the evolution of Triticeae species
Gramineous plants, including the major agricultural crops wheat (Triticum aestivum L.), rye (Secale cereale L.) and maize (Zea mays L.), accumulate benzoxazinones (Bxs) as defensive compounds.… Expand
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Identification of a novel quinone-binding site in the cytochrome bo complex from Escherichia coli.
The cytochrome bo complex is a heme BO-type heme-copper quinol oxidase in the aerobic respiratory chain of Escherichia coli and functions as an electron transfer-linked proton pump. To study the… Expand
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Regulation by Cytokinins of Endogenous Levels of Jasmonic and Salicylic Acids in Mechanically Wounded Tobacco Plants
Plants respond differentially to wounding and pathogens using distinct signaling pathways, so that wound signals are transmitted to jasmonic acid (JA) which induces basic pathogenesis-related (PR)… Expand
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Induction of HDMBOA-Glc accumulation and DIMBOA-Glc 4-O-methyltransferase by jasmonic acid in poaceous plants.
Induction of the accumulation of 2-(2-hydroxy-4,7-dimethoxy-1,4-benzoxazin-3-one)-beta-D-glucopyranose (HDMBOA-Glc) by jasmonic acid (JA) was investigated in wheat, Job's tears (Coix lacryma-jobi),… Expand
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Biosynthesis of Oat Avenanthramide Phytoalexins.
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Comparison of the inhibitory action of natural rotenone and its stereoisomers with various NADH-ubiquinone reductases.
Two stereoisomers of natural rotenone (5'alpha-epirotenone and 5'beta-epirotenone) were synthesized to identify the stereochemical factor of rotenone required for the inhibition and also to probe the… Expand
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Molecular characterization and chromosomal localization of cytochrome P450 genes involved in the biosynthesis of cyclic hydroxamic acids in hexaploid wheat
Abstract. The cyclic hydroxamic acids, 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA) and 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), are defensive secondary metabolites found in gramineous… Expand
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Accumulation of HDMBOA-Glc is induced by biotic stresses prior to the release of MBOA in maize leaves.
The effects of biotic stresses on the contents of benzoxazinones (Bxs) were investigated in maize leaves. When the causal agent of southern corn leaf blight, Bipolaris maydis, was inoculated on the… Expand
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