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Abstract
The leaf extracts of Datura metel [both aqueous leaf extract (ALE) and ethanolic leaf extract (ELE)] were observed here to find if they can induce systemic resistance in the rice commonly found in Eastern India. The results showed that after the treatment, the enzyme activities of all the defence-related enzymes increased to a certain level even without pathogenic infection in comparison with non-treated seedlings and then, maintain at constant level throughout the study period. When treated seedlings were infected with Rhizoctonia solani, the enzyme activities were increased more than in uninfected seedlings. The elevated enzyme activities gave the indication of an induced systemic resistance in rice. The ELE of D. metel showed better induction effect than ALE.
Acknowledgements
Authors thankfully acknowledge the support offered by Dr. Nripendranath Mandal, Associate Professor, Division of Molecular Medicine, Bose Institute, Kolkata, West-Bengal and Professor Indrabrata Bhattacharya, Plant Pathology Department of Bidhan Chandra Krishi Viswa Vidyalaya, Kalyani, West-Bengal, in performing this experiment. Authors would like to express heartiest thanks to Subarna Ghosh for providing the language help and writing assistance.