Abstract
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.
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Claims 7
Claim · model-written summary
Diminished anionic peroxidase expression in antisense APO plants results in high susceptibility of potato to Phytophthora infestans.
- Taxon
- Solanum tuberosum
Solanum tuberosume1 - Material
- as APO plantse1
- Treatment
- antisense expressione1
- Interactor
- Phytophthora infestans
Phytophthora infestanse1pathogen - Gene
- anionic peroxidase gene M21334e1
- Outcome
- susceptibility to Phytophthora infestanse1
- Direction
- highe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“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”
Claim · model-written summary
Diminished anionic peroxidase expression in antisense APO plants results in deficient lignin deposition in cell walls.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Material
- as APO plantse1
- Treatment
- antisense expressione1
- Outcome
- lignin deposition in cell wallse1
- Direction
- deficiente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“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”
Claim · model-written summary
Antisense APO plants have a low level of H2O2.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Material
- as APO antisense plantse2
- Treatment
- antisense expressione1
- Outcome
- level of H 2 O 2e2
- Direction
- lowe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“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”
e2“as APO antisense plants have a low level of H 2 O 2”
Claim · model-written summary
Antisense APO plants show reduced transcription of JA-responsive and JA-biosynthesis genes.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Treatment
- antisense expressione1
- Outcome
- transcription of JAe4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“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”
e4“such as reduced transcription of JA”
Claim · model-written summary
Exogenous H2O2 partially restored JA-dependent reactions in antisense APO plants.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Material
- as APO plantse6
- Treatment
- Exogenous H 2 O 2e5
- Outcome
- JAe5
- Direction
- restorede5
- Qualifier
- partiallye5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“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”
e5“Exogenous H 2 O 2 partially restored JA”
e6“reactions in as APO plants”
Claim · model-written summary
Exogenous H2O2 increased lignin deposition around pathogen-penetrated sites in antisense APO plants.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Treatment
- Exogenous H 2 O 2e5
- Outcome
- lignin depositione7
- Direction
- increasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“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”
e5“Exogenous H 2 O 2 partially restored JA”
e7“together with an increase in lignin deposition around pathogen”
Claim · model-written summary
Exogenous H2O2 increased resistance of antisense APO plants to P. infestans.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Treatment
- Exogenous H 2 O 2e5
- Interactor
- P. infestansPhytophthora infestanse6pathogen
- Outcome
- resistancee6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“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”
e5“Exogenous H 2 O 2 partially restored JA”
e6“resulting in increased resistance of as APO to P. infestans”
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