N. Nishizawa

Publications279
h-index72
Citations16,081
Highly Influential Citations878
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Iron uptake, translocation, and regulation in higher plants.
Iron is essential for the survival and proliferation of all plants. Higher plants have developed two distinct strategies to acquire iron, which is only slightly soluble, from the rhizosphere: the… Expand
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Rice plants take up iron as an Fe3+-phytosiderophore and as Fe2+.
Only graminaceous monocots possess the Strategy II iron (Fe)-uptake system in which Fe is absorbed by roots as an Fe3+-phytosiderophore. In spite of being a Strategy II plant, however, rice (Oryza… Expand
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OsYSL2 is a rice metal-nicotianamine transporter that is regulated by iron and expressed in the phloem.
We identified 18 putative yellow stripe 1 (YS1)-like genes (OsYSLs) in the rice genome that exhibited 36-76% sequence similarity to maize iron(III)-phytosiderophore transporter YS1. Of particular… Expand
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Rice metal-nicotianamine transporter, OsYSL2, is required for the long-distance transport of iron and manganese.
Rice (Oryza sativa) is indispensable in the diet of most of the world's population. Thus, it is an important target in which to alter iron (Fe) uptake and homeostasis, so as to increase Fe… Expand
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OsZIP4, a novel zinc-regulated zinc transporter in rice.
Zinc (Zn) is an essential element for the normal growth of plants but information is scarce on the mechanisms whereby Zn is transported in rice (Oryza sativa L.) plants. Four distinct genes, OsZIP4,… Expand
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Rice OsYSL15 Is an Iron-regulated Iron(III)-Deoxymugineic Acid Transporter Expressed in the Roots and Is Essential for Iron Uptake in Early Growth of the Seedlings*
Graminaceous plants take up iron through YS1 (yellow stripe 1) and YS1-like (YSL) transporters using iron-chelating compounds known as mugineic acid family phytosiderophores. We examined the… Expand
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The rice bHLH protein OsIRO2 is an essential regulator of the genes involved in Fe uptake under Fe-deficient conditions.
Iron (Fe) deficiency is a major abiotic stress in crop production. Although responses to Fe deficiency in graminaceous plants, such as increased production and secretion of mugineic acid family… Expand
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Role of nicotianamine in the intracellular delivery of metals and plant reproductive development.
Nicotianamine (NA), a chelator of metals, is ubiquitously present in higher plants. Nicotianamine aminotransferase (NAAT) catalyzes the amino group transfer of NA in the biosynthetic pathway of… Expand
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Ion-beam irradiation, gene identification, and marker-assisted breeding in the development of low-cadmium rice
Rice (Oryza sativa L.) grain is a major dietary source of cadmium (Cd), which is toxic to humans, but no practical technique exists to substantially reduce Cd contamination. Carbon ion-beam… Expand
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Cloning of nicotianamine synthase genes, novel genes involved in the biosynthesis of phytosiderophores.
Nicotianamine synthase (NAS), the key enzyme in the biosynthetic pathway for the mugineic acid family of phytosiderophores, catalyzes the trimerization of S-adenosylmethionine to form one molecule of… Expand
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