Role of phenols and polyphenols in plant defense response to biotic and abiotic stresses

By Palistha Tuladhar, Santanu Sasidharan, Prakash Saudagar. 2021

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Abstract Crops represent an integral part of mankind. They produce a range of primary and secondary metabolites with different functions. A large and diverse group of secondary metabolites, represented by phenols and polyphenols, are synthesized by crops for physiological roles in its life cycle. The physiological roles include growth regulation, interactions with ethylene, lignin and pigment biosynthesis, etc. Among the various roles of the metabolites, they have also been known to be capable of scavenging harmful reactive oxygen species in various organisms. In plants, there has been an increased biosynthesis of phenol and polyphenol compounds to help them cope with the multifarious abiotic and biotic stresses such as salinity, heavy metal, drought, temperature, UV lights, disease progression, etc. This chapter focusses on the classification and of phenolic and polyphenolic compounds and its biosynthesis through various pathways in the crops. The specificity of the protection to crop stress conferred by each of these compounds and the role of the compounds in plant growth are also discussed in detail. Conclusively, the ability of the secondary metabolite will help us understand the different mechanisms adopted by the crops to survive and inhabit unfavorable environments.

Subfields: Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/816a6e6c639c60f769244ba325cac1e4546ce5e9