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Hydrogen peroxide modulates the dynamic microtubule cytoskeleton during the defence responses to Verticillium dahliae toxins in Arabidopsis.
- Source :
-
Plant, cell & environment [Plant Cell Environ] 2011 Sep; Vol. 34 (9), pp. 1586-98. Date of Electronic Publication: 2011 Jun 28. - Publication Year :
- 2011
-
Abstract
- The molecular mechanisms of signal transduction of plants in response to infection by Verticillium dahliae (VD) are not well understood. We previously showed that NO may act as an upstream signalling molecule to trigger the depolymerization of cortical microtubules in Arabidopsis. In the present study, we used the wild-type, and atrbohD and atrbohF mutants of Arabidopsis to explore the mechanisms of action of H(2)O(2) signals and the dynamic microtubule cytoskeleton in defence responses. We demonstrated that H(2)O(2) may also act as an upstream signalling molecule to regulate cortical microtubule depolymerization. The depolymerization of the cortical microtubules played a functional role in the signalling pathway to mediate the expression of defence genes. The results indicate that H(2)O(2) modulates the dynamic microtubule cytoskeleton to trigger the expression of defence genes against V. dahliae toxins (VD-toxins) in Arabidopsis.<br /> (© 2011 Blackwell Publishing Ltd.)
- Subjects :
- Arabidopsis drug effects
Arabidopsis genetics
Arabidopsis ultrastructure
Arabidopsis Proteins genetics
Cytoskeleton metabolism
Hydrogen Peroxide metabolism
Microtubules drug effects
Microtubules metabolism
Mycotoxins isolation & purification
Plant Diseases microbiology
Plant Immunity
Plant Leaves genetics
Plant Leaves physiology
Plant Leaves ultrastructure
Plants, Genetically Modified genetics
Plants, Genetically Modified physiology
Plants, Genetically Modified ultrastructure
RNA, Plant genetics
Seedlings genetics
Seedlings physiology
Seedlings ultrastructure
Sequence Deletion
Signal Transduction drug effects
Arabidopsis physiology
Cytoskeleton drug effects
Gene Expression Regulation, Plant drug effects
Hydrogen Peroxide pharmacology
Mycotoxins pharmacology
Verticillium chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1365-3040
- Volume :
- 34
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Plant, cell & environment
- Publication Type :
- Academic Journal
- Accession number :
- 21707649
- Full Text :
- https://doi.org/10.1111/j.1365-3040.2011.02356.x