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| Registros recuperados: 26 | |
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| Vert, G.; Barberon, M.; Zelazny, E.; Seguela, M.; Briat, J.F.; Curie, C.. |
| Iron is an essential nutrient for all organisms but toxic when present in excess. Consequently, plants carefully regulate their iron uptake, dependent on the FRO2 ferric reductase and the IRT1 transporter, to control its homeostasis. Arabidopsis IRT2 gene, whose expression is induced in root epidermis upon iron deprivation, was shown to encode a functional iron/zinc transporter in yeast, and proposed to function in iron acquisition from the soil. In this study, we demonstrate that, unlike its close homolog IRT1, IRT2 is not involved in iron absorption from the soil since overexpression of IRT2 does not rescue the iron uptake defect of irt1-1 mutant and since a null irt2 mutant shows no chlorosis in low iron. Consistently, an IRT2-green fluorescent fusion... |
| Tipo: Journal Article |
Palavras-chave: IRT2; IRON UPTAKE; METAL; TRANSPORT; ROOT. |
| Ano: 2009 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201047eff656&uri=/notices/prodinra1/2010/12/ |
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| Registros recuperados: 26 | |
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