The Reaction of Carthamus Tinctoriuos L. Metabolism to the Drought Stress and the Resistance Rate in the Plant
Habibeh zareDepartment of Biology Payame Noor University (PNU) Iran.
Abstract:
In this research the effect of drought stress to the proline density, soluble sugars and the activities of the Guaiacol Peroxidase and Catalase has been considered. The plants have been grown in the Perlite environment including Hoagland and different concentrations of Polietilen Glycol 6000. The plants have been kept in the growing room with a 16 hours brightness and 8 hours darkness light diet in 2± 25 centigrade degree. The rate of Proline, soluble sugars and the activities of Guaiacol Peroxidase and Catalase antioxidant enzymes has been determined by the spectrophotometer. As the Proline drought stress increased the sample group was faced with a meaningful increase in soluble sugars rate which the increase rate in the resistant plants was more than that of the sensitive plants in all cases. The consideration of Guaiacol Peroxidase and Catalase enzymes activities rate in the sensitive and resistant plants roots and stem indicated that these enzymes in resistant plants were more active than the sensitive ones. As the environment stresses increased the activity of reactive oxygen species, this also decreased the plants growing process as well. We can therefore suggest the increasing of Antioxidant enzymes activity and also the soluble smolites as the mechanisms of resistance to the drought stress for the resistant plants.
Keywords: Carthamus tinctorious; Drought stress; resistance rate Back to TOC