IJCRRI Journ Cur Res ReInternational Journal of Current Research and ReviewI Journ Cur Res Re2231-21960975-5241Radiance Research Academy1581General SciencesDEFENCE RESPONSE TRIGGERED BY SCLEROTIUM ROLFSII IN GROUNDNUT (ARACHIS HYPOGAEA L.) PLANTS SaraswathiM.M.N.Reddy15112012)2330This article is copyright of Popeye Publishing, 20092009This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0) Licence. You may share and adapt the material, but must give appropriate credit to the source, provide a link to the licence, and indicate if changes were made.

Total phenols and ortho-dihydroxy phenols from healthy and Sclerotium rolfsii inoculated hypocotyls regions of groundnut plants were estimated at different stages of disease development after 10 days of inoculation. The contents of total phenol and ortho-dihydroxy phenols were increased throughout the sampling period of the disease compared to healthy plants. Phenylalanine ammonia lyase (PAL), Polyphenol oxidase (PPO) and Peroxidase (PEO) activities were also increased at different stages of disease development. The results showed that the changes in the levels of phenols, ortho-dihydroxy phenols and the enzymes like PAL, PPO and PEO form an important part in the resistance mechanism of the groundnut plants against infection with S.rolfsii.

Sclerotium rolfsii phenols defence response phenyl ammonia lyase peroxidase polyphenol oxidase groundnut