Abstract: In this study, effects of various environmental factors on resistance and susceptibility to mass production against two isolates of Beauveria bassiana species (AT007 and AT076) which show entomopathogenic activity under low humidity levels and low spore concentrations are aimed to compare. In that purpose, growth and sporulation of isolates in different temperatures, and resistance against UV radiation are compared in terms of tendency to mass production. Effect of temperature on colony diameter and sporulation were analyzed under 20C, 25C and 30C. To compare the UV resistance, prepared spore suspensions were spray on SDA medium. Then, the suspensions were exposed to UV (Philips 35 W) for 15, 30 and 60 minutes open cover from 30 cm distance. Tendency to mass production were determined by growing on brazen material which is commonly used in spore production and the ability of spore growth were evaluated. AT007 and AT076 isolates showed much more diameter increase under 25C temperatu

• Publication Date: 11-Dec-2015
• DOI: 10.15224/978-1-63248-078-1-03
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Abstract: To determine the effects of estrone on the ability of plants to tolerate boron toxicity, estrone (0.01 μM) and boron (5 mM H3BO3), singly or in combination, were exogenously applied to 11-d-wheat seedlings and 3 days later from treatments, they were harvested to determine many parameters. Boron toxicity caused to remarkable reductions on the root and shoot lengths. Besides, it led to a marked decrease in the activities of antioxidant enzymes, including superoxide dismutase (SOD), guaiacol peroxidase (GPX), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR), as well as an decrease in the level of soluble protein and photosynthetic pigments including chlorophyll and carotene. Thus, boron toxicity bring about a significant oxidative injury by increasing levels of the superoxide anion (O2 -.), hydrogen peroxide (H2O2) and malondialdehyde (MDA). Whereas estrone was able to reduce the boron-induced oxidative damage and improved the antioxidant system. Moreover, the eff

• Publication Date: 11-Dec-2015
• DOI: 10.15224/978-1-63248-078-1-04
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