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The role of ethylene and darkness in accelerated shoot elongation of Ammophila breviligulata upon sand burial

Voesenek, L.A.C.J. and Van der Putten, W.H. and Maun, M.A. and Blom, C.W.P.M. (1998) The role of ethylene and darkness in accelerated shoot elongation of Ammophila breviligulata upon sand burial. Oecologia, 115, 359-365. ISSN 0029-8549.

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Official URL: http://dx.doi.org/10.1007/s004420050528

Abstract

The impact of elevated ethylene concentrations and darkness on the growth and development of shoot organs of Ammophila breviligulata was investigated under experimental conditions in a complete two-way design. The results were compared with data of partially sand buried plants. Enhanced ethylene concentrations and sand burial stimulated the formation of new stem nodes, a prerequisite for burial-induced shoot elongation. However, internode elongation itself could not be promoted by the phytohormone ethylene, by darkness, or by their interaction. Sand burial inhibited the formation of rhizomes and tillers and the investment in root and rhizome biomass. Darkness mimicked this effect for the number of rhizomes and the biomass allocated to roots and rhizomes, indicating that the change in light regime upon sand burial may play an important role in the signal transduction chain that leads to a different allocation pattern in A. breviligulata. The results are discussed within the context of alternative signals that might initiate the internode elongation response in sand-buried A. breviligulata plants. [KEYWORDS: ethylene; darkness; sand burial; shoot elongation; allocation Deep-water rice; growth; morphology; submergence; seedlings; accretion; arenaria; survival; roots; seed]

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:10696
Deposited On:25 Nov 2011 01:00
Last Modified:31 Mar 2014 10:55

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