Anionic peroxidase‐mediated oxidative burst requirement for jasmonic acid‐dependent Solanum tuberosum defence against Phytophthora infestans

Plants are subject to pervasive attack by a diversity of pathogens and herbivores. It is considered that salicylic (SA) and jasmonic (JA) acids induce systemic resistance to these antagonists. Different lines of evidence indicate that the interplay of SA and JA with reactive oxygen species (ROS), ge...

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Bibliographic Details
Published inPlant pathology Vol. 67; no. 2; pp. 349 - 357
Main Authors Sorokan, A. V., Burhanova, G. F., Maksimov, I. V.
Format Journal Article
LanguageEnglish
Published Oxford Wiley Subscription Services, Inc 01.02.2018
Subjects
Acid resistance
anionic peroxidase
Antagonists
Antisense RNA
Biosynthesis
Cell walls
Deposition
Gene expression
Herbivores
Hydrogen peroxide
Immunity
Jasmonic acid
Lignin
Low level
NAD(P)H oxidase
Pathogens
Penetration resistance
Peroxidase
Phytophthora infestans
Plants (botany)
Reactive oxygen species
salicylic acid
Solanum tuberosum
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Summary:Plants are subject to pervasive attack by a diversity of pathogens and herbivores. It is considered that salicylic (SA) and jasmonic (JA) acids induce systemic resistance to these antagonists. Different lines of evidence indicate that the interplay of SA and JA with reactive oxygen species (ROS), generated by NADPH oxidases or apoplastic peroxidases, has an important role in the plant defence response. It was previously shown that diminished expression of the Solanum tuberosum anionic peroxidase gene M21334, as a consequence of antisense expression (asAPO plants), results in high susceptibility to Phytophthora infestans and deficient lignin deposition in cell walls. Further research reported in this paper showed that asAPO antisense plants have a low level of H2O2 and impaired JA‐associated responses, such as reduced transcription of JA‐responsive and JA‐biosynthesis genes. The asAPO plants did not exhibit any apparent defect in their susceptibility to SA. Exogenous H2O2 partially restored JA‐dependent reactions in asAPO plants, together with an increase in lignin deposition around pathogen‐penetrated sites, resulting in increased resistance of asAPO to P. infestans. These data demonstrate that the anionic peroxidase‐dependent oxidative burst plays an important role in the elicitation of JA‐associated immunity.
ISSN:0032-0862
1365-3059
DOI:10.1111/ppa.12743