SEXUAL REPRODUCTION IN THE FRESHWATER DINOFLAGELLATE GLOEODINIUM MONTANUM1

Autor:	Lois A. Pfiester, Ingrid Kelley
Rok vydání:	1990
Předmět:	Homothallism Budding Zygote Isogamy Anisogamy Botany Dinoflagellate Plant Science Aquatic Science Biology Protoplast biology.organism_classification Sexual reproduction
Zdroj:	Journal of Phycology. 26:167-173
ISSN:	1529-8817 0022-3646
DOI:	10.1111/j.0022-3646.1990.00167.x
Popis:	The sexual life cycle of Gloeodinium montanum Klebs was examined with light and scanning electron microscopy. In unialgal cultures G. montanum divided predominantly by simple division, giving rise to two nonmotile cells. When placed in fresh medium, 2–4 biflagellated swarmers were formed from the vegetative cells. Swarmers developed directly into vegetative cells or acted as gametes. Both isogamy and anisogamy were observed. Gloeodinium montanum is homothallic. Fusion occurred in the non-motile state producing a large aplanozygote, which germinated after approximately two months to a year or more. Zygote germination liberated four aplanospores. Budding of the zygote, resulting from unequal division of the protoplast and multiple fusion attempts also were observed.
Databáze:	OpenAIRE
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