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

TY - JOUR

T1 - The role of ethylene and darkness in accelerated shoot elongation of Ammophila breviligulata upon sand burial

AU - Voesenek, L.A.C.J.

AU - Van der Putten, W.H.

AU - Maun, M.A.

AU - Blom, C.W.P.M.

N1 - Reporting year: 1998 Metis note: 2438; CTE; TME ; TE file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1998/Voesenek_ea_2438.pdf

PY - 1998

Y1 - 1998

N2 - 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]

AB - 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]

U2 - 10.1007/s004420050528

DO - 10.1007/s004420050528

M3 - Article

SN - 0029-8549

VL - 115

SP - 359

EP - 365

JO - Oecologia

JF - Oecologia

IS - 3

ER -