The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.
Interplay between JA, SA and ABA signalling during basal and induced resistance against Pseudomonas syringae and Alternaria brassicicola
Open accessAbstract
Summary: We have examined the role of the callose synthase PMR4 in basal resistance and β‐aminobutyric acid‐induced resistance (BABA‐IR) of Arabidopsis thaliana against the hemi‐biotrophic pathogen Pseudomonas syringae and the necrotrophic pathogen Alternaria brassicicola. Compared to wild‐type plants, the pmr4‐1 mutant displayed enhanced basal resistance against P. syringae, which correlated with constitutive expression of the PR‐1 gene. Treating the pmr4‐1 mutant with BABA boosted the already elevated levels of PR‐1 gene expression, and further increased the level of resistance. Hence, BABA‐IR against P. syringae does not require PMR4‐derived callose. Conversely, pmr4‐1 plants showed enhanced susceptibility to A. brassicicola, and failed to show BABA‐IR. Wild‐type plants showing BABA‐IR against A. brassicicola produced increased levels of JA. The pmr4‐1 mutant produced less JA upon A. brassicicola infection than the wild‐type. Blocking SA accumulation in pmr4‐1 restored basal resistance, but not BABA‐IR against A. brassicicola. This suggests that the mutant’s enhanced susceptibility to A. brassicicola is caused by SA‐mediated suppression of JA, whereas the lack of BABA‐IR is caused by its inability to produce callose. A. brassicicola infection suppressed ABA accumulation. Pre‐treatment with BABA antagonized this ABA accumulation, and concurrently potentiated expression of the ABA‐responsive ABI1 gene. Hence, BABA prevents pathogen‐induced suppression of ABA accumulation, and sensitizes the tissue to ABA, causing augmented deposition of PMR4‐derived callose.
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Cites
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Role of plant hormones in plant defence responses
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Metadata
- Authors
- Flors, V., Ton, J., Van Doorn, R., Jakab, G., García‐Agustín, P., & Mauch‐Mani, B.
- Venue
- The Plant Journal
- Publisher
- Wiley
- Published
- 2007-12-15
- Volume
- 54
- Issue
- 1
- Pages
- 81-92
- ISSN
- 0960-7412 (ISSN-L)
- 1365-313X
- OpenAlex
- W1920908115
- Cited by
- 303
- References
- 38
- FWCI
- 16.94
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Flors, V., Ton, J., Van Doorn, R., Jakab, G., García‐Agustín, P., & Mauch‐Mani, B. (2008). Interplay between JA, SA and ABA signalling during basal and induced resistance against Pseudomonas syringae and Alternaria brassicicola. The Plant Journal. https://doi.org/10.1111/j.1365-313x.2007.03397.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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