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A comparative study on Glutathione S-transferase activities of the Needles of Two Pine species under Drought and Cold stresses

Author Affiliations

  • 1Department of Biology, Faculty of Science, Yuzuncu Yil University (YYU), Van-TURKEY

Int. Res. J. Biological Sci., Volume 3, Issue (7), Pages 65-70, July,10 (2014)


Total cytosolic Glutathione S-transferase (GST, EC activities and the changes in the GSH pools of the needle samples from cold-resistant Pinus sylvestris and relatively drought resistant Pinus brutia species were screened for three seasons. Samples of spring season were accepted as reference for other two groups of sampling done in summer and winter; and, daily total precipitation, air humidity, minimum and maximum temperature values and freeze incidents were recorded. Results revealed the possible correlation between the dimensions of GSH pools and total GST activities of needle homogenates at cold and drought stresses. Those two species showed different behaviours for the same climatic conditions.


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