Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses

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 bioch...

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Main Authors: Cristiane dos Santos, Octávio Luiz Franco
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Plants
Subjects:
Online Access:https://www.mdpi.com/2223-7747/12/11/2226
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author Cristiane dos Santos
Octávio Luiz Franco
author_facet Cristiane dos Santos
Octávio Luiz Franco
author_sort Cristiane dos Santos
collection DOAJ
description 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.
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spelling doaj.art-dab83d18f6cb46a5b11d9a0b0ab7e7262023-11-18T08:25:03ZengMDPI AGPlants2223-77472023-06-011211222610.3390/plants12112226Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense ResponsesCristiane dos Santos0Octávio Luiz Franco1S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, BrazilS-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, BrazilThroughout 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.https://www.mdpi.com/2223-7747/12/11/2226plant–pathogen interactionplant protectionpreformed mechanismpostformed mechanismsignaling pathways
spellingShingle Cristiane dos Santos
Octávio Luiz Franco
Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses
Plants
plant–pathogen interaction
plant protection
preformed mechanism
postformed mechanism
signaling pathways
title Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses
title_full Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses
title_fullStr Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses
title_full_unstemmed Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses
title_short Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses
title_sort pathogenesis related proteins prs with enzyme activity activating plant defense responses
topic plant–pathogen interaction
plant protection
preformed mechanism
postformed mechanism
signaling pathways
url https://www.mdpi.com/2223-7747/12/11/2226
work_keys_str_mv AT cristianedossantos pathogenesisrelatedproteinsprswithenzymeactivityactivatingplantdefenseresponses
AT octavioluizfranco pathogenesisrelatedproteinsprswithenzymeactivityactivatingplantdefenseresponses