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The ultrastructure of germinating and ungerminated Sphagnum spores. Ultrastructure sporoderm in Sphagnumстатья
- Авторы: Polevova S., Krinitsina A.
- Журнал: Wulfenia
- Том: 24
- Год издания: 2017
- Издательство: Botanischer Garten des Landes Karnten
- Местоположение издательства: Austria
- Аннотация: The ultrastructure of germinating and ungerminated Sphagnum spores was investigated by TEM. Germinating spores differed from ungerminated spores not only by their protoplast condition but also by the sporoderm ultrastructure. The middle layer of the intine intensely thickens on the proximal hemisphere during spore germination. It actively promotes the protoplast exit through the open laesura outside a sporoderm to form a young protonema. The granular layer which is described traditionally as an outer intine is considered as a separate acetolysis resistant layer and is compared with the endexine of pollen grains.
- Добавил в систему: Северова Елена Эрастовна