AUTHOR=Rai Krishna Kumar , Pandey Neha , Rai Nagendra , Rai Sanjay Kumar , Pandey-Rai Shashi 

TITLE=Salicylic Acid and Nitric Oxide: Insight Into the Transcriptional Regulation of Their Metabolism and Regulatory Functions in Plants

JOURNAL=Frontiers in Agronomy

VOLUME=Volume 3 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/agronomy/articles/10.3389/fagro.2021.781027

DOI=10.3389/fagro.2021.781027

ISSN=2673-3218

ABSTRACT=Salicylic acid (SA) and nitric oxide (NO) are key signaling molecules required for the activation of the plant’s innate immunity against abiotic stresses and biotrophic attackers. Stress-induced signaling and accumulation of SA and NO triggers extensive transcriptional reprograming of various defense-related genes, induced biosynthesis of secondary metabolites and anti-microbial compounds thereby protecting/steering plant growth and immunity. Transcriptional regulation of SA and NO signaling are crucial for fine-tuning important cellular and metabolic functions thus making plant defense impervious against many pathogens. The development of impervious immune response is often associated with an unavoidable trade-off in the form of active suppression of plant growth and reproduction. Therefore, we highlighted here recent advancements and researches to unravel transcriptional regulation of SA and NO signaling essential for fulfilling their role as defense signaling molecules. We also emphasized comprehensive knowledge related to transcriptional reprogramming of SA and NO signaling that are essential in strengthening plant growth-immunity trade-off. We also highlighted here the progress made on SA and NO signaling playing an indispensable role in the stimulation of plant-microbe interaction essentially for modulating important plant functions.