Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovora
We have characterized the role of salicylic acid (SA)-independent defense signaling in Arabidopsis thaliana in response to the plant pathogen Erwinia carotovora subsp. carotovora. Use of pathway-specific target genes as well as signal mutants allowed us to elucidate the role and interactions of ethy...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The American Phytopathological Society
2000-04-01
|
| Series: | Molecular Plant-Microbe Interactions |
| Subjects: | |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2000.13.4.430 |
| _version_ | 1811291297232715776 |
|---|---|
| author | Cecilia Norman-Setterblad Sabina Vidal E. Tapio Palva |
| author_facet | Cecilia Norman-Setterblad Sabina Vidal E. Tapio Palva |
| author_sort | Cecilia Norman-Setterblad |
| collection | DOAJ |
| description | We have characterized the role of salicylic acid (SA)-independent defense signaling in Arabidopsis thaliana in response to the plant pathogen Erwinia carotovora subsp. carotovora. Use of pathway-specific target genes as well as signal mutants allowed us to elucidate the role and interactions of ethylene, jasmonic acid (JA), and SA signal pathways in this response. Gene expression studies suggest a central role for both ethylene and JA pathways in the regulation of defense gene expression triggered by the pathogen or by plant cell wall-degrading enzymes (CF) secreted by the pathogen. Our results suggest that ethylene and JA act in concert in this regulation. In addition, CF triggers another, strictly JA-mediated response inhibited by ethylene and SA. SA does not appear to have a major role in activating defense gene expression in response to CF. However, SA may have a dual role in controlling CF-induced gene expression, by enhancing the expression of genes synergistically induced by ethylene and JA and repressing genes induced by JA alone. |
| first_indexed | 2024-04-13T04:26:18Z |
| format | Article |
| id | doaj.art-ea6d5410ca5f47cabfbafe880dc516ba |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-04-13T04:26:18Z |
| publishDate | 2000-04-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-ea6d5410ca5f47cabfbafe880dc516ba2022-12-22T03:02:30ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062000-04-0113443043810.1094/MPMI.2000.13.4.430Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovoraCecilia Norman-SetterbladSabina VidalE. Tapio PalvaWe have characterized the role of salicylic acid (SA)-independent defense signaling in Arabidopsis thaliana in response to the plant pathogen Erwinia carotovora subsp. carotovora. Use of pathway-specific target genes as well as signal mutants allowed us to elucidate the role and interactions of ethylene, jasmonic acid (JA), and SA signal pathways in this response. Gene expression studies suggest a central role for both ethylene and JA pathways in the regulation of defense gene expression triggered by the pathogen or by plant cell wall-degrading enzymes (CF) secreted by the pathogen. Our results suggest that ethylene and JA act in concert in this regulation. In addition, CF triggers another, strictly JA-mediated response inhibited by ethylene and SA. SA does not appear to have a major role in activating defense gene expression in response to CF. However, SA may have a dual role in controlling CF-induced gene expression, by enhancing the expression of genes synergistically induced by ethylene and JA and repressing genes induced by JA alone.https://apsjournals.apsnet.org/doi/10.1094/MPMI.2000.13.4.430elicitorssoft rot |
| spellingShingle | Cecilia Norman-Setterblad Sabina Vidal E. Tapio Palva Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovora Molecular Plant-Microbe Interactions elicitors soft rot |
| title | Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovora |
| title_full | Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovora |
| title_fullStr | Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovora |
| title_full_unstemmed | Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovora |
| title_short | Interacting Signal Pathways Control Defense Gene Expression in Arabidopsis in Response to Cell Wall-Degrading Enzymes from Erwinia carotovora |
| title_sort | interacting signal pathways control defense gene expression in arabidopsis in response to cell wall degrading enzymes from erwinia carotovora |
| topic | elicitors soft rot |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2000.13.4.430 |
| work_keys_str_mv | AT cecilianormansetterblad interactingsignalpathwayscontroldefensegeneexpressioninarabidopsisinresponsetocellwalldegradingenzymesfromerwiniacarotovora AT sabinavidal interactingsignalpathwayscontroldefensegeneexpressioninarabidopsisinresponsetocellwalldegradingenzymesfromerwiniacarotovora AT etapiopalva interactingsignalpathwayscontroldefensegeneexpressioninarabidopsisinresponsetocellwalldegradingenzymesfromerwiniacarotovora |