| Autor: |
Talanova VV; Institute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk, Karelia, 185910, Russia. talanova@krc.karelia.ru., Titov AF; Institute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk, Karelia, 185910, Russia., Repkina NS; Institute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk, Karelia, 185910, Russia., Ignatenko AA; Institute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk, Karelia, 185910, Russia. |
| Abstrakt: |
We studied the effect of abscisic acid (ABA) on the expression of genes encoding the functional homologues of proapoptotic (CsBAX) and antiapoptotic (CsBI-1) proteins in cucumber leaves at low temperatures. The exposure to a hardening temperature of 12°C caused a slight increase in the level of CsBAX gene transcript and a sharp increase in the CsBI-1 gene transcript. At a damaging temperature of 4°C, the content of the CsBAX gene mRNA significantly increased, whereas the content of the CsBI-1 gene mRNA remained virtually unchanged. The treatment of seedlings with ABA reduced the release of electrolytes from cells and both 12 and 4°C, i.e., increased the cold resistance and simultaneously decreased the level of CsBAX gene transcripts, but drastically increased the content of CsBI-1 gene mRNA. |
