Biochemical and Morphological Response of Common Bean (Phaseolus vulgaris L.) to Salinity Stress and Vitamin B12
Journal Title: International Journal of Farming and Allied Sciences - Year 2015, Vol 4, Issue 7
Abstract
The effects of saline water irrigation and cyanocobalamin (vitamin B12) priming were evaluated on some growth parameters and biochemical attributes of common bean (Phaseolus vulgaris L.). Effects were determined by leaf area, root and shoot length, root and shoot dry matter, antioxidant enzyme activity, protein content, chlorophyll and carotenoids, lipid peroxidation and proline accumulation. The results demonstrated that application of vitamin B12 provided significant protection against salinity stress compared with non treated plants. In addition, vitamin B12 application showed a significant effect on morphological characteristics. According to the outcomes, antioxidant enzyme activity, lipid peroxidation, carotenoid and proline accumulation increased due to NaCl stress while protein, chlorophyll and carotenoids decreased. Seed priming with vitamin B12 induced these stimulatory effects on all the measured parameters. Root protein content and leaf carotenoid content were not affected by vitamin treatment under conditions of salinity stress. These results suggest that, vitamin B12 may have a critical role as an effective antioxidant and regulates osmotic balance thereby enhancing bean plant’s resistance to salinity stress.
Authors and Affiliations
Hamed Keshavarz, Seyed Ali Mohammad Modares Sanavy
Keywords
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