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Anionic peroxidase‐mediated oxidative burst requirement for jasmonic acid‐dependent Solanum tuberosum defence against Phytophthora infestans
Author(s) -
Sorokan A. V.,
Burhanova G. F.,
Maksimov I. V.
Publication year - 2018
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/ppa.12743
Subject(s) - phytophthora infestans , jasmonic acid , peroxidase , biology , salicylic acid , respiratory burst , reactive oxygen species , biochemistry , apoplast , solanum tuberosum , plant defense against herbivory , elicitor , botany , microbiology and biotechnology , gene , enzyme , cell wall
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 (as APO plants), results in high susceptibility to Phytophthora infestans and deficient lignin deposition in cell walls. Further research reported in this paper showed that as APO antisense plants have a low level of H 2 O 2 and impaired JA ‐associated responses, such as reduced transcription of JA ‐responsive and JA ‐biosynthesis genes. The as APO plants did not exhibit any apparent defect in their susceptibility to SA . Exogenous H 2 O 2 partially restored JA ‐dependent reactions in as APO plants, together with an increase in lignin deposition around pathogen‐penetrated sites, resulting in increased resistance of as APO to P. infestans . These data demonstrate that the anionic peroxidase‐dependent oxidative burst plays an important role in the elicitation of JA ‐associated immunity.