Fig. 4: Generalized mechanisms involving NO under nutritional and abiotic stress.
From: Molecular functions of nitric oxide and its potential applications in horticultural crops

Adverse environments rapidly induce the accumulation of NO, which elicits nutrient acquisition and stress defense responses, including enhanced defense gene expression, altered root morphology, improved antioxidant defense, accelerated organic acid exudation, and changed cell wall composition. Arrows indicate positive effects