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Effect of beta-aminobutyric acid (BABA) on enzymatic and non-enzymatic antioxidants of Brassica napus L.under drought stress

Peyman Rajaei, Neda mohamadi

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Int. J. Biosci.3(11), 41-47, November 2013

DOI: http://dx.doi.org/10.12692/ijb/3.11.41-47


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Water stress is one of the most important environmental factors that affect plant growth and development, and limit plant production. Many regions in Iran suffer from water deficit. To overcome these limitations for improving crop yield, it is important to increase stress tolerance of crops, such as Brassica napus L. The broad spectrum protective effect of the non-protein amino acid β-aminobutyric acid (BABA) against numerous plant stresses has been well-documented in the literature. This research shows a possibility to increase plant tolerance for drought stress through effective priming of the preexisting defense pathways in rapeseed plant. Pretreatment of plants with BABA increased ascorbate, anthocyanin and flavonoid content, while decreased DHA content in water stress plants. Calcium content was significantly increased in BABA treated plants. In drought stress condition, activity of SOD, APX and POD were elevated over the controls, while CAT activity decreased. In plants which pretreated with BABA and then exposed to drought stress the activity of mentioned enzymes increased.


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Effect of beta-aminobutyric acid (BABA) on enzymatic and non-enzymatic antioxidants of Brassica napus L.under drought stress

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