Affiliation:
1. S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
2. Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 71966-700, Brazil
Abstract
Throughout evolution, plants have developed a highly complex defense system against different threats, including phytopathogens. Plant defense depends on constitutive and induced factors combined as defense mechanisms. These mechanisms involve a complex signaling network linking structural and biochemical defense. Antimicrobial and pathogenesis-related (PR) proteins are examples of this mechanism, which can accumulate extra- and intracellular space after infection. However, despite their name, some PR proteins are present at low levels even in healthy plant tissues. When they face a pathogen, these PRs can increase in abundance, acting as the first line of plant defense. Thus, PRs play a key role in early defense events, which can reduce the damage and mortality caused by pathogens. In this context, the present review will discuss defense response proteins, which have been identified as PRs, with enzymatic action, including constitutive enzymes, β-1,3 glucanase, chitinase, peroxidase and ribonucleases. From the technological perspective, we discuss the advances of the last decade applied to the study of these enzymes, which are important in the early events of higher plant defense against phytopathogens.
Subject
Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics
Reference111 articles.
1. The Lifecycle of the Plant Immune System;Li;CRC Crit. Rev. Plant Sci.,2020
2. Modulation of Plant Defense System in Response to Microbial Interactions;Nishad;Front. Microbiol.,2020
3. Induced systemic resistance by beneficial microbes;Pieterse;Annu. Rev. Phytopathol.,2014
4. Nguyen, Q.-M., Iswanto, A.B.B., Son, G.H., and Kim, S.H. (2021). Recent advances in effector-triggered immunity in plants: New pieces in the puzzle create a different paradigm. Int. J. Mol. Sci., 22.
5. PTI-ETI crosstalk: An integrative view of plant immunity;Yuan;Curr. Opin. Plant Biol.,2021