Melatonin stimulates the expansion of etiolated lupin cotyledons

Melatonin stimulates the expansion of etiolated lupin cotyledons Melatonin (N-acetyl-5-methoxytryptamine) is an indoleamine which is structurally related to tryptophan, serotonin and indole-3-acetic acid (IAA), among other important substances. Many studies have clearly demonstrated its presence in different plant organs, including roots, stems, leaves, flowers, fruits and seeds. Since it discovery in plants in 1995, authors have postulated many physiological roles for melatonin, although research into this molecule in plants is still in its infancy. The data presented in this study demonstrate that melatonin stimulates the expansion of etiolated cotyledons of lupin (Lupinus albus L.) to a similar extent to that observed for IAA but less than in the case of kinetin. Endogenous melatonin in imbibed cotyledons has been quantified using a liquid chromatography method with fluorescence detection and capacity of cotyledons to absorb melatonin has been determined. The observed effect of melatonin on lupin cotyledon expansion can be added to the other effects demonstrated by our group such as its role as growth promoter and rooting promotor in adventitious and lateral roots. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Growth Regulation Springer Journals

Melatonin stimulates the expansion of etiolated lupin cotyledons

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Publisher
Springer Journals
Copyright
Copyright © 2008 by Springer Science+Business Media B.V.
Subject
Life Sciences; Plant Physiology
ISSN
0167-6903
eISSN
1573-5087
DOI
10.1007/s10725-008-9254-y
Publisher site
See Article on Publisher Site

Abstract

Melatonin (N-acetyl-5-methoxytryptamine) is an indoleamine which is structurally related to tryptophan, serotonin and indole-3-acetic acid (IAA), among other important substances. Many studies have clearly demonstrated its presence in different plant organs, including roots, stems, leaves, flowers, fruits and seeds. Since it discovery in plants in 1995, authors have postulated many physiological roles for melatonin, although research into this molecule in plants is still in its infancy. The data presented in this study demonstrate that melatonin stimulates the expansion of etiolated cotyledons of lupin (Lupinus albus L.) to a similar extent to that observed for IAA but less than in the case of kinetin. Endogenous melatonin in imbibed cotyledons has been quantified using a liquid chromatography method with fluorescence detection and capacity of cotyledons to absorb melatonin has been determined. The observed effect of melatonin on lupin cotyledon expansion can be added to the other effects demonstrated by our group such as its role as growth promoter and rooting promotor in adventitious and lateral roots.

Journal

Plant Growth RegulationSpringer Journals

Published: Jan 11, 2008

References

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