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

Frontiers in Agronomy

Shashi Pandey-Rai¹  Neha Pandey²  Sanjay Kumar Rai³  Nagendra Rai⁴  Krishna Kumar Rai⁴ 

[1] Department of Botany, Centre of Advance Study in Botany, Institute of Science, Banaras Hindu University (BHU), Varanasi, India;Department of Botany, Chaudhary Mahadev Prasad Post-Graduate College (CMP PG) College (A constituent PG College of University of Allahabad), Allahabad, India;Department of Horticulture, Dr. Rajendra Prasad Agricultural University, Samastipur, India;Indian Institute of Vegetable Research, Varanasi, India;

关键词: salicylic acid;    nitric oxide;    plant immunity;    transcriptional regulation;    strigolactones;   

DOI  :  10.3389/fagro.2021.781027

来源: DOAJ

【 摘 要 】

Salicylic acid (SA) and nitric oxide (NO) are key signaling molecules required to activate the plant's innate immunity against abiotic stresses and biotrophic attackers. Stress-induced signaling and accumulation of SA and NO triggers extensive transcriptional reprogramming of 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 an impenetrable immune response is often associated with an unavoidable trade-off in the form of active suppression of plant growth and reproduction. Therefore, we highlighted recent advancements and research 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 important in strengthening plant growth-immunity trade-off. We also highlighted the progress on SA and NO signaling playing an indispensable role in stimulating plant-microbe interaction to modulate crucial plant functions.

【 授权许可】

Unknown