American Journal of Plant Physiology1557-45391557-4547Academic Journals Inc.10.3923/ajpp.2011.252.260Datura]]>SivakumarT. PanneerselvamR. 5201165The triadimefon induced changes in antioxidant potential and alkaloid production of Datura fastuosa and Datura innoxia were studied. Both varieties were subjected to 15 mg L-1 triadimefon treatment by soil drenching on 55, 65 and 80 Days after Planting (DAP). The plants were harvested on 60, 75 and 90 DAP and used for analyzing antioxidant contents, antioxidative enzymes and indole alkaloid activities. The antioxidants like ascorbic acid, α-tocopherol and reduced glutathione were found increased under Triadimefon (TDM) treatment when compared to control plants. The antioxidative enzymes like superoxide dismutase, ascorbate peroxidase and catalase activities and indole alkaloid content increased in both the varieties under triadimefon treatment when compared to control (con) plants. The antioxidant potentials viz., Ascorbic Acid (AA), α-tocopherol and reduced Glutathione (GSH) were found increased under triadimefon treatment. The antioxidant enzymes like Superoxide Dismutase (SOD), Ascorbate Peroxidase (APX) and Catalase (CAT) activities showed slight changes in both the species under triadimefon treatment when compared to control plants. Indole alkaloid content increased significantly under triadimefon treatment. These preliminary results suggest that, the application of triadimefon may be a useful tool to increase the antioxidant potential and alkaloid content in medicinal plants.]]>Ali, R.F.M.,20109918930Amirjani, M.R.,20105350360Asada, K. and M. Takasaki,19871987pp: 227-287pp: 227-287Azooz, M.M. and M.A. Al-Fredan,2009Vicia faba L. cv. Hassawi grown under seawater irrigation.]]>43851Baker, H., O. Frank, B. Angelis and S. Feingold,198021531536Berkov, S. and R. Zayed,2004Datura innoxia grown in Egypt and Bulgaria.]]>59184186Bhardwaj, R., N. Arora, P. Sharma and H.K. Arora,2007Zea mays L.]]>6765772Bruneton, J.,19932nd Edn.,Chandlee, J.M. and J.G. Scandalios,1984697177CSIR.,19923389396Davis, D.G. and H.R. Swanson,2001Euphorbia esula L.).]]>4695108Drake, L.R., S. Lin, G.D. Rayson and P. Jackson,1996Datura innoxia.]]>30110114Fletcher, R.A., A. Gilley, N. Sankhla and T.D. Davis,19991999pp: 55-138pp: 55-138Foyer, C.H., P. Descourvieres and K.J. Kunert,199417507523Gaspar, T., T. Franck, B. Bisbis, C. Kevers, L. Jouve, J.F. Hausman and J. Dommes,200237263285Griffith, O.W. and A. Meister,197925475587560Griffin, W.J. and G.D. Lin,200053623637Hwang, S.Y., H.W. Lin, R.H. Chern, H.F. Lo and L. Li,199927167172Jaleel, C.A., R. Gopi, P. Manivannan, A. Kishorekumar, M. Gomathinayagam and R. Panneerselvam,2007Dioscorea rotundata Poir.) tubers during storage.]]>8283288Jaleel, C.A., R. Gopi, G.M.A. Lakshmanan and R. Panneerselvam,2006Catharanthus roseus (L.) G. Don.]]>171271276Jaleel, C.A., R. Gopi, G. Manivannan and R. Panneerselvam,2007Catharanthus roseus (L.) G. Don. To paclobutrazol treatment under salinity.]]>29205209Jaleel, C.A., P. Manivannan, M. Gomathinayagam, R. Sridharan and R. Panneerselvam,2007Dioscorea rotundata poir. Following paclobutrazol drenching.]]>330798805Kar, A., B.K. Choudhary and N.G. Bandyopadhyay,200384105108Lounasmaa, M. and T. Tamminen,19931993pp: 1pp: 1Noctor, G. and C.H. Foyer,199849249279Omaye, S.T., J.D. Turnbull and H.E. Sauberlich,197962311Omidi, H.,20105338349Panneerselvam, R., M. Muthukumarasamy and L. Karikalan,1997Raphanus sativus L.]]>34605609Pastori, G.M., P.M. Mullineaux and C.H. Foyer,2000122667676Scandalios, J.G., L. Guan and A.N. Polidoros,19971997pp: 343-406pp: 343-406Sheela, A. and V. Pandy,20038264269Shim, I.S., Y. Momose, A. Yamamoto, D.W. Kim and K. Usui,200339285292Sivakumar, T., A. Sundaramanickam and R. Panneerselvam,20091333341Sivakumar, T., G.M.A. Lakshmanan, P.V. Murli and R. Panneerselvam,201011013Smirnoff, N. and G.I. Wheeler,19991999pp: 215-229pp: 215-229Stahl, E.,1969Willekens, H., S. Chamnongpol, M. Davey, M. Schraudner and C. Langebartels et al.,19972O2 and is indispensable for stress defense in C3 plants.]]>1648064816Zayed, R.,2003Hyoscyamus pusillus and elicitation of tropane alkaloid.]]>44307318Bradford, M.M.,197672248254