|
Descripción
|
|
|---|---|
| Trees from temperate and cold regions have developed an adaptive mechanism called winter dormancy aimed to survive the extreme temperatures that take place during this season. In our laboratory we try to understand the circadian and epigenetic control of this process, that at the same time determine the geographical distribution of woody perennials. The circadian clock is involved in the transduction of daylength and temperature signals that regulate the winter dormancy. In chestnut in response to cold, circadian clock genes lose their rhythmic expression and become constitutively activated (Ramos et al., 2005; Ibáñez et al., 2008). This molecular response to cold also occurs in Arabidopsis but only when light/dark cues are absent. We are interested in decipher how this specific molecular response is controlled in order to shed light on the biological meaning of the constitutive activation of circadian clock genes in response to cold. Global changes in 5mC DNA methylation have been shown in the transition of developmental stages in plants such as chestnut bud set and burst, flowering in azalea, aging in pine trees among other. In our laboratory we have observed that methylation was significantly higher in poplar stem during dormancy compared to the growing season (Conde et al., 2013). However, the mechanism and the enzymes involved in the modification of the methylome and its control over those development processes remain to be identified. We have identified and characterized the first 5mC demethylases found in trees. | |
|
Internacional
|
Si |
|
ISSN o ISBN
|
0000-0000 |
|
Entidad relacionada
|
|
|
Nacionalidad Entidad
|
Sin nacionalidad |
|
Lugar del congreso
|
|