Developmental changes in aperture during pollen grain ontogeny in Olea europaea L

Changes in both size and form of the structures making up the apertural region, a modified part of the pollen grain wall, were studied during development in Olea europaea L. The very young microspores initially show thickening of the endexine around the apertural zone. This is followed by the appear...

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Bibliographic Details
Published in:The New phytologist 1989-04, Vol.111 (4), p.717-723
Main Authors: Fernandez, M.C, Rodriguez-Garcia, M.I
Format: Article
Language:English
Subjects:
ANATOMIA DE LA PLANTA
ANATOMIE VEGETALE
ANTERA
ANTHERE
ANTHERS
apertures
Biological and medical sciences
BIOLOGICAL DEVELOPMENT
Cell membranes
CELL STRUCTURE
CELL WALLS
Cytoplasm
DESARROLLO BIOLOGICO
DEVELOPPEMENT BIOLOGIQUE
Electron density
ESTRUCTURA CELULAR
FOSSE
Fundamental and applied biological sciences. Psychology
HOYOS
Materials
Microspores
OLEA EUROPAEA
olive
Ontogeny
PARED CELULAR
PAROI CELLULAIRE
PITS
PLANT ANATOMY
Plant physiology and development
POLEN
POLLEN
Seed development
STRUCTURE CELLULAIRE
ULTRAESTRUCTURA
ULTRASTRUCTURE
Vegetative and sexual reproduction, floral biology, fructification
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Summary:Changes in both size and form of the structures making up the apertural region, a modified part of the pollen grain wall, were studied during development in Olea europaea L. The very young microspores initially show thickening of the endexine around the apertural zone. This is followed by the appearance of an exinous oncus and subsequently an intinous oncus. The intinous oncus contains tubules derived from evaginations of the plasmalemma. These tubules increase in number and diameter during development.
ISSN:0028-646X
1469-8137
DOI:10.1111/j.1469-8137.1989.tb02367.x