CHLOROPLAST DEVELOPMENT AND ULTRESTRUCTURE IN THE FRESHWATER RED ALGA BATRACHOSPERMUM

Autor:	D. L. Brown, T. E. Weier
Rok vydání:	1968
Předmět:	biology food and beverages Plant Science Red algae Aquatic Science biology.organism_classification Chloroplast membrane Chloroplast Chloroplast stroma Lamella (surface anatomy) Proplastid Botany Ultrastructure Lamellar structure
Zdroj:	Journal of Phycology. 4:199-206
ISSN:	1529-8817 0022-3646
DOI:	10.1111/j.1529-8817.1968.tb04715.x
Popis:	Chloroplast development and ultrastructure of the freshwater red alga Batrachospermum moniliforme are described. Chloroplasts develop from proplastids which have a double-membraned chloroplast envelope and a parallel double-membraned outer photo-synthetic lamella. Of these 2 double-membraned structures of the proplastid, only the outermost pho-tosynthetic lamella functions in production of further lamellae. The mature chloroplast consists of 2 or more concentric lamellae and a variable number of nonconcentric lamellae. These lamellae are not dense, uninterrupted sheets as described for other red algae, but are largely constructed of tubules, lying side by side, that form interrupted lamellar sheets. The possible physiological significance of lamellar interruptions in providing path-ways for movement of materials in the chloroplast stroma is discussed.
Databáze:	OpenAIRE
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