The presence of free radicals in photosynthetic and respiratory systems is inevitable, even in optimal condition for growth.
In these conditions, How much free radicals can be loss in yield?
They have not harmful effect on normal condition, but they have signaling role in plants controlling processes such as growth, development, and ......
http://www.plantphysiol.org/content/plantphysiol/141/2/311.full.pdf
Dear it will reduce yield when the concentration has overwhelmed the mechanism controlling the regulation in the system.
In a optimum condition for growth, I sprayed my plant with cytokinin, the levels of antioxidant enzymes (POD, SOD, catalase) in these plant was higher than control (foliar with distilled water). why?? It's not a results due to reduce free radicals?
cytokinin!!! not auxin. in 50 μM. Not high concentration
the protein level was not significant.
I suggest contact to Dr. Afshin Tavakoli University of Zanjan · Faculty of Agriculture. He is working on cytokinin concentrations and also antioxidant enzymes.
Afshin Tavakoli
Of course, Thanks
Dear Dr. Tavakoli was my Advisor in my MSc course.
When plant was grown at normal conditions, there was little doses of free radicals to act as useful signals for plant ,while these radicals will be dangerous only under stressful conditions where the over production of these free radicals
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