Winter cereals require cold acclimation to reach their maximum freezing tolerance and vernalization for the initiation of the transition from the vegetative to the reproductive phase. The aim of this study was to investigate whether these processes are under redox regulation and whether they effect the expression of the genes involved developmental and defence processes. A relationship was found between frost tolerance and redox changes. The developmental phase of shoot apices in examined plants was independent from the redox state of crown tissue. In the double ridge phase the frost tolerance was significantly increased. The expression of the genes involved in cold acclimation was induced by cold but their expression levels decreased from spike initiation. Moreover treatment of plants with reactive oxygen species and antioxidants improved the freezing tolerance and affected the expression of several genes, which confirms the assumed redox regulation of freezing tolerance.
|Number of pages||4|
|Journal||Acta Biologica Szegediensis|
|Publication status||Published - dec. 15 2011|
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Agricultural and Biological Sciences(all)