Melatonin in Plants
A widespread occurrence of melatonin in plant kingdom has been reported. The circadian rhythm in the level of melatonin observed in both unicellular algae and higher plants, suggests a role in regulation of photoperiodic and rhythmic phenomena, i.e. a similar function for melatonin in both plants and animals. Evidence has been obtained for a role of melatonin in plant morphogenesis, but more research is needed to ascertain other suggested physiological roles in higher plants (seed dormancy regulation, radical scavenger activity, interaction with calmodulin) as well the ecological significance of the high melatonin levels recorded in alpine plants. Setting-up more reliable analytical methods for melatonin detection and quantification is a basic requirement to get more insight into melatonin roles in plant physiology and ecology.
KeywordsMelatonin Level Hypericum Perforatum Alpine Plant Chenopodium Rubrum Gold Leaf
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- 4.A. Hattori, H. Migitaka, I. Masayaki, M. Itoh, M. Yamamoto, R. Ohtani-Kaneko, M. Hara, I. Suzuki, R.J. Reiter, Identification of melatonin in plants and its effects on plasma melatonin levels and binding to melatonin receptors in vertebratesBiochem. Mol. Biol. Int. 35627–634 (1995).PubMedGoogle Scholar
- 7.C. Tettamanti, B. Cerabolini, P. Gerola, A. Conti, Melatonin identification in medicinal plantsActa Phytotherapeutica III137–144 (2000).Google Scholar
- 8.R.J. Reiter, Melatonin: that ubiquitously acting pineal hormoneNew Physiolol. Sci. 6223–227 (1991).Google Scholar
- II.R. Hardeland, A. Coto-Montes, S. Burkhardt, B. K. Zsizsik, Circadian rhythms and oxydative stress in nonvertebrate organism. In:The redox state and cicardian rhythms edited by T.V.D. e. al., (Kluwer Academic Publishers, The Netherlands, 2000). pp. 121–140.Google Scholar
- 12.B. Poeggeler, R.J. Reiter, D.X. Tan, L.D. Chen, L.C. Manchester, Melatonin, hydroxyl radical-mediated oxidative damage and aging, A hypotesisJ. Pin. Res. 14151–168 (1993).Google Scholar
- 13.D. L. Van Tassel, J. Li, S.D. O’Neill. Melatonin: identification of a potential dark signal in plantsPlant Physiol. 102659 (1993).Google Scholar
- 14.J. Kolar, I. Machackova, Melatonin: does it regulate rhythmicity and photoperiodism also in higher plants?Flower. Newsl. 1753–54 (1994).Google Scholar
- 15.R. Hardeland and B. Fuhrberg, Ubiquitous melatonin: presence and effects in unicells, plant and animalsTrends Comp. Biochem. Physiol. 225–45 (1996).Google Scholar
- 18.D. L. Van Tassel. Identification and quantification of melatonin in higher plants, Ph D. Dissertation, University of California, Davis, CA. (1995)Google Scholar