Back to Search
Start Over
Cortical microtubule as a sensor and target of nitric oxide signal during the defence responses to Verticillium dahliae toxins in Arabidopsis.
- Source :
-
Plant, cell & environment [Plant Cell Environ] 2009 Apr; Vol. 32 (4), pp. 428-38. Date of Electronic Publication: 2009 Jan 14. - Publication Year :
- 2009
-
Abstract
- The molecular mechanisms of signal transduction of plants in response to Verticillium dahliae (VD) are not known. Here, we show that Arabidopsis reacts to VD-toxins with a rapid burst of nitric oxide (NO) and cortical microtubule destabilization. VD-toxins treatment triggered a disruption of cortical microtubules network. This disruption can be influenced by NO production. However, cortical microtubule disruptions were not involved in regulating the NO production. The results indicated that NO may act as an upstream signalling molecule to trigger the depolymerization of cortical microtubule. Cortical microtubules may act as a target of NO signal and as a sensor to mediate the activation of PR-1 gene expression. These results suggested that NO production and cortical microtubule dynamics appeared to be parts of the important signalling system and are involved in the defence mechanisms to VD-toxins in Arabidopsis.
- Subjects :
- Arabidopsis genetics
Arabidopsis microbiology
Arabidopsis Proteins genetics
Arabidopsis Proteins metabolism
Gene Expression Regulation, Plant
Microtubules metabolism
Mutation
Mycotoxins pharmacology
Nitric Oxide Synthase genetics
Nitric Oxide Synthase metabolism
Plant Diseases genetics
RNA, Plant metabolism
Arabidopsis metabolism
Microtubules drug effects
Nitric Oxide metabolism
Phyllachorales pathogenicity
Signal Transduction
Subjects
Details
- Language :
- English
- ISSN :
- 1365-3040
- Volume :
- 32
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Plant, cell & environment
- Publication Type :
- Academic Journal
- Accession number :
- 19183295
- Full Text :
- https://doi.org/10.1111/j.1365-3040.2009.01939.x