Homeostasis of the structurally important micronutrients, B and Si

Tipo de material: Texto

TextoSeries ; Current Opinion in Plant Biology, 12(3), p.307-311, 2009Trabajos contenidos:

Miwa, K
Kamiya, T
Fujiwara, T

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Resumen: This review focuses on recent advances in understanding the transport mechanisms of two elements, B and Si in plants. Both are present as noncharged molecules in soil solution as boric acid and silicic acid. Both function in apoplast: pectic polysaccharides crosslinked with borate and polymers of hydrated silica are important for the physical strength of plant cells. In recent years, molecular genetics revealed analogous transport systems of B and Si. Combinations of NIP channels and exporters localized to distal and proximal sides, allow efficient trans-cellular transport of the nutrients. Polar localization, observed in these transport molecules, is likely to be a key to regulate directional transport of nutrients.

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Documentos solicitados	CICY Documento préstamo interbibliotecario	Ref1	B-11158 (Browse shelf(Opens below))	Available

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Previous	B-11155 Freeways in the plant: transporters for N, P and S and their regulation	B-11156 Moving cationic minerals to edible tissues: potassium, magnesium, calcium	B-11157 Placing metal micronutrients in context: transport and distribution in plants	B-11158 Homeostasis of the structurally important micronutrients, B and Si	B-11159 The long-distance signaling of mineral macronutrients	B-1116 The innovative organization	B-11160 Moving up, down, and everywhere: signaling of micronutrients in plants	Next

This review focuses on recent advances in understanding the transport mechanisms of two elements, B and Si in plants. Both are present as noncharged molecules in soil solution as boric acid and silicic acid. Both function in apoplast: pectic polysaccharides crosslinked with borate and polymers of hydrated silica are important for the physical strength of plant cells. In recent years, molecular genetics revealed analogous transport systems of B and Si. Combinations of NIP channels and exporters localized to distal and proximal sides, allow efficient trans-cellular transport of the nutrients. Polar localization, observed in these transport molecules, is likely to be a key to regulate directional transport of nutrients.

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