Nitric oxide and mineral nutrition.

FACUNDO RAMOS ARTUSO; AGUSTINA BUET; MARCELA SIMONTACCHI; ANDREA GALATRO

Corrientes

Congreso; XXXI Reunión Argentina de Fisiología Vegetal.; 2016

Sociedad Argentina de Fisiología Vegetal

Plants have developed mechanisms to extract mineral nutrients under low-nutrient availability conditions which include, among others, major changes in the pattern of root growth, the release of chemical compounds that contribute to increase nutrient accumulation by roots, and the increase in the activity of transport systems that converge in determining an increased efficiency of nutrient acquisition. Nutrient acquisition and use in plants can be affected according to nutrient availability as well as internal and environmental cues.Nitric oxide, endogenously synthesized or generated in the surroundings, acts a signaling molecule and participates in both physiological and stress acclimation responses in plants. Current evidence supports a role for NO in mineral nutrient acquisition and homeostasis. The first described and most extensively studied case is the NO role in iron homeostasis, but other plant and mineral nutrient interactions such as with nitrogen, zinc and phosphorus have also been described to be modulated by nitric oxide.