title: Changes in the activity of amylase, peroxidase and catalase in beech (Fagus orientalis Lipsky) during dormancy and growth.
abstract: Activities of peroxidase, amylase and catalase were analyzed on beech (Fagus orientalis Lipsky) during one year to determine relationship between these enzymes with the period of dormancy and growing season. Results showed that amylase activity was high but catalase and peroxidase activities were low during the growing season. Peroxidase and catalase activities increased from July to November whereas amylase activity started to decrease at the same time, which means that the plants were prepared themselves to be dormant and the hardening was happened. The peroxidase maximum activity was in November, which is an important sign of dormancy and completing hardening in plant. The dormancy released from February along with decrease of catalase activity. At the beginning of growing season, correlation between amylase and catalase was increased. Amylase activity also increased gradually. No significant correlation between amylase-catalase and amylase-peroxidase activities was found at the period of dormancy. In our study, we found that the seasonal activity of enzymes such as peroxidase, catalase, and amylase, also correlation between these enzymes could be an important factor for the detection the period of dormancy and growing season.
authors.affiliation: Department of Natural Resources, University of Tarbiat Modarres, Noor, Iran. rzolfaghari@modares.ac.ir
authors.forename: Roghoyeh
authors.initials: R
authors.lastname: Zolfaghari
authors.forename: Soudabeh A A
authors.initials: SA
authors.lastname: Korori
authors.forename: V
authors.initials: V
authors.lastname: Etemad
mesh_terms: D000681:Amylases / Q000378:metabolism*; D002374:Catalase / Q000378:metabolism*; D003080:Cold Temperature; D029964:Fagus / Q000201:enzymology / Q000502:physiology; D010544:Peroxidases / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*; D012621:Seasons
chemical_list: D010940:Plant Proteins; D010544:Peroxidases; D002374:Catalase; D000681:Amylases