Title: Re-evaluation of a neglected layer in pollen wall development with comments on its evolution
Authors: El-Ghazaly, G ×
Huysmans, Suzy #
Issue Date: 2001
Publisher: Taylor & francis as
Series Title: Grana vol:40 issue:1-2 pages:3-16
Abstract: This study focuses on one particular layer of the pollen wall, which develops below the endexine in the free microspore stage and prior to the initiation of the intine. This membranous-granular layer (MGL) has been described by different terms in the literature and has often been interpreted either as part of the endexine, or the intine. During ontogeny, however, the granular material shows a development that is clearly distinct, both in timing and mode of formation, from the endexine as well as the intine. Its chemical composition is also characteristic; the MGL resists acetolysis. Our ontogenetic observations from four dicot and one monocot species are used to illustrate the systematically widespread occurrence of this wall layer, its ultrastructure and histochemistry, and its comparable nature throughout angiosperms.
ISSN: 0017-3134
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Plant Systematics and Ecology Section - miscellaneous
× corresponding author
# (joint) last author

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