INVESTIGADORES
MARQUEZ Gonzalo Javier
artículos
Título:
Substructural components in the sporoderm of the Family Cyatheaceae
Autor/es:
GONZALO J. MARQUEZ ; MARTA A. MORBELLI
Revista:
PALYNOLOGY
Editorial:
AMER ASSOC STRATIGRAPHIC PALYNOLOGISTS FOUNDATION
Referencias:
Año: 2015 vol. 39 p. 248 - 257
ISSN:
0191-6122
Resumen:
The ultrastructure of the sporoderm of three genera of the family Cyatheaceae was studied in detail, with the aim to know their constitutive elements. While the perispore of Alsophila and Sphaeropteris are thick and complex that of Cyathea, is quite reduced and with a different structure, nevertheless their basic elements seem to be similar. We found that the substructural components are threads with a diameter of 50-100 nm and that each one, is composed of an inner channel, around which there are several smaller coiled units. The channels are interconnected and form a complex system, which is continuous within the exospore and in a similar pattern. This network of threads, could be related to the transfer of substances between the outer and inner parts of the spores during their development.
