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Journal of Biological Sciences
  Year: 2013 | Volume: 13 | Issue: 4 | Page No.: 250-256
DOI: 10.3923/jbs.2013.250.256
Effect of Activity Ceasing of Acetyl CoA-carboxylase on Growth and Antioxidant System in Seedling Stage of Barley
Amir Vahdatirad and Ezatolah Esfandiari

Abstract:
In order to the better understanding and to compensate against environmental factors affecting on yield, it is necessary to know patterns of plant physiological behaviors and association between biosynthetic pathways of biomolecules. Therefore, Barley landrace of ‘Siah’ was planted and activity of acetyl CoA-carboxylase (ACoC) enzyme was stopped using sethoxydim in 3-4 leaf old stage. Sampling was done from barley seedlings at various stages and were analyzed the parameters of dry matter production, membrane stability index, relative water content, activities of scavenging enzymes of hydrogen peroxide, hydrogen peroxide accumulation and malondialdehyde. Results showed that growth and development of the seedlings were inhibited by activity ceasing of ACoC. It has been made by inhibition of necessary fatty acid biosynthesis to generate new cells and to increase the cells sizes. During activity ceasing of ACoC, there was significant changes in activity scavenging enzymes of hydrogen peroxide except to guaiacol peroxidase. Activity of the enzymes altogether were resulted in accumulation of hydrogen peroxide in plants with ceased activity of ACoC. The accumulation of hydrogen peroxide also caused to increase lipids peroxidation. The obtained results displayed that activity ceasing of ACoC caused inhibition of plant growth and disruption of plant defense mechanisms.
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How to cite this article:

Amir Vahdatirad and Ezatolah Esfandiari, 2013. Effect of Activity Ceasing of Acetyl CoA-carboxylase on Growth and Antioxidant System in Seedling Stage of Barley. Journal of Biological Sciences, 13: 250-256.

DOI: 10.3923/jbs.2013.250.256

URL: https://scialert.net/abstract/?doi=jbs.2013.250.256

 
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