Antioxidative responses and expression of insecticidal proteins in Bt cotton under high irradiance

Parimala P.; Muthuchelian K.

Antioxidative responses and expression of insecticidal proteins in Bt cotton under high irradiance

2011

Parimala P. | Muthuchelian K.

Effect of high irradiance (HI) on the activity of antioxidant enzymes, rate of lipid peroxidation and hydrogen peroxide accumulation were investigated in non Bt and Bt cotton. The accumulation of malondialdehyde (MDA) and H2O2 was higher in Bt cotton. Sustained cultivation of Bt cotton requires stable transgene expression under HI stress. In the present study, Bt toxin proteins (Cry1Ac and Cry2Ab), which are essential for the control of lepidopteron pests, were found to be reduced in Bt cotton under HI stress.

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