Ultrastructural study of the pit connections of Gelidiocolax Gardner (parasitic Rodophyta) / Estudi ultraestructural de les sinapsis de Gelidiocolax Gardner (Rhodophyta paràsit)

• Autores: Juan Antonio Seoane Camba, Núria Cortadellas i Raméntol
• Localización: Acta botánica barcinonensia, ISSN-e 2340-5023, ISSN 0210-7597, Nº. 45, 1998, págs. 107-113
• Idioma: inglés
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  • català

    S'ha portat a terme l' estudi ultraestructural de les sinapsis de Gelidiocolax (G. margaritoides (Martin & Pocock) Fan & Papenfus, G. Christianae Feldmann i G. deformans Seoane-Camba). Tal com ja s 'ha descrit en d' altres especies, es produeix una massa compactada d' elements electrodensos i figures mielíniques possiblement produïdes pel reticle endoplasmàtic. Aquesta massa es transforma en una figura en forma de diàbolo abans que la divisió s 'hagi acabat i el septe estigui completament desenvolupat. Les figures mielíniques es troben localitzades habitualment en el centre de les sinapsis madures; aquestes figures, però, sembla que es substitueixen per material granular durant l'ontogènia.

  • English

    A report on the ultrastructural observations of the pit connections in three species of Gelidiocolax (G. margaritoides (Martín & Pocock) Fan & Papenfus, G. christianae Feldrnann and G. deformans Seoane-Camba) has been carried out. As has been described in other species, electrondense elements and myelinic figures, possibly formed by the endoplasmic reticulum, were condensed in a mass. This mass became a diabolos-shaped structure before the cytoplasm had finished its division and the septum had reached its complete development. Myelinic figures were usually found in the core of well formed pit plugs, but such figures were apparently substituted by granular material during the ontogeny.