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Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements

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Níquel: un micronutriente esencial para las legumbres y posiblemente para todas las plantas superiores

D L Eskew, R M Welch, E E Cary

Science (New York, N.Y.)

|November 11, 1983

Resumen

El níquel es esencial para la salud de la soja, previniendo la acumulación de urea tóxica y la necrosis. Este estudio demuestra el níquel.

Área de la Ciencia:

Fisiología vegetal Fisiología vegetal
Ciencias agrícolas Ciencias agrícolas.
La esencialidad de los nutrientes.

Sus antecedentes:

El níquel es un micronutriente para las plantas.
La acumulación de urea puede ser tóxica para las plantas.
El metabolismo del nitrógeno es crucial para el crecimiento de las plantas.

Objetivo del estudio:

Para investigar el papel del níquel en el metabolismo del nitrógeno de la soja.
Para determinar los efectos de la privación de níquel en el crecimiento y la salud de la soja.
Para establecer la esencialidad del níquel para las plantas de soja.

Principales métodos:

Las plantas de soja se cultivaron en condiciones controladas con y sin suplementación de níquel.
Se midieron las concentraciones de urea en los tejidos vegetales.
Se evaluó el crecimiento de las plantas, la nodulación y la necrosis tisular.

Principales resultados:

Las plantas de soja privadas de níquel acumulan niveles tóxicos de urea (2.5%) en las lesiones necróticas de las hojas.
La deficiencia de níquel retrasó la nodulación y redujo el crecimiento temprano.
La adición de níquel (1 μg / L) a los medios de nutrición evitó estos efectos adversos.

Conclusiones:

El níquel es un elemento esencial para las plantas de soja, crucial para el metabolismo adecuado del nitrógeno y la salud en general.
La deficiencia de níquel conduce a la toxicidad de la urea, la necrosis y el deterioro del crecimiento en la soja.
Los hallazgos sugieren que la esencialidad del níquel puede extenderse a las plantas superiores en general.

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