A study on the response of Arabidopsis CARKs kinases to ABA signaling

Abstract:

The plant hormone abscisic acid (ABA) plays an important role in the response of plants to abiotic and biotic stresses for survival and reproduction. In this study, the TDNA mutants of carks as parents to construct double mutant to detect the function of CARKs in the ABA signaling pathway. Seed germination and cotyledon greening rate were analyzed in plants before and after ABA treatment. The results revealed that, compared with wild type, CARKs single mutant and double mutants had a higher germination rate. The cotyledon greening rates of double mutants also showed similar results. These results indicated that CARKs play a positive regulatory role in the ABAmediated germination and seedling growth in Arabidopsis. And the members of the CARK family showed redundant roles in ABA signaling.