An Update on Nitric Oxide Production and Role Under Phosphorus Scarcity in Plants

GALATRO, ANDREA; RAMOS-ARTUSO, FACUNDO; LUQUET, MELISA; BUET, AGUSTINA; SIMONTACCHI, MARCELA

Frontiers in Plant Science

Lausanne : Frontiers Research Foundation, 2010-

Año: 2020 vol. 11

Phosphate (P) is characterized by its low availability and restricted mobility in soils, andalso by a high redistribution capacity inside plants. In order to maintain P homeostasisin nutrient restricted conditions, plants have developed mechanisms which enable Pacquisition from the soil solution, and an efficient reutilization of P already present inplant cells. Nitric oxide (NO) is a bioactive molecule with a plethora of functions in plants.Its endogenous synthesis depends on internal and environmental factors, and is closelytied with nitrogen (N) metabolism. Furthermore, there is evidence demonstrating thatN supply affects P homeostasis and that P deficiency impacts on N assimilation. Thisreview will provide an overview on how NO levels in planta are affected by P deficiency,the interrelationship with N metabolism, and a summary of the current understandingabout the influence of this reactive N species over the processes triggered by Pstarvation, which could modify P use efficiency.