Journal article

THE PHOTOSYNTHETIC ENDOSYMBIONT IN CRYPTOMONAD CELLS PRODUCES BOTH CHLOROPLAST AND CYTOPLASMIC-TYPE RIBOSOMES

GI MCFADDEN, PR GILSON, SE DOUGLAS

Journal of Cell Science | COMPANY OF BIOLOGISTS LTD | Published : 1994

Abstract

Cryptomonad algae contain a photosynthetic, eukaryotic endosymbiont. The endosymbiont is much reduced but retains a small nucleus. DNA from this endosymbiont nucleus encodes rRNAs, and it is presumed that these rRNAs are incorporated into ribosomes. Surrounding the endosymbiont nucleus is a small volume of cytoplasm proposed to be the vestigial cytoplasm of the endosymbiont. If this compartment is indeed the endosymbiont's cytoplasm, it would be expected to contain ribosomes with components encoded by the endosymbiont nucleus. In this paper, we used in situ hybridization to localize rRNAs encoded by the endosymbiont nucleus of the cryptomonad alga, Cryptomonas phi. Transcripts of the endosym..

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University of Melbourne Researchers