Titlebook: Origins of Plastids; Symbiogenesis, Proch Ralph A. Lewin Book 1993 Springer Science+Business Media Dordrecht 1993 Chloroplast.Organe.algae.

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Introductory Remarks,dians on the Great Barrier Reef of Australia, by Smith in 1935, they were regarded as nondescript algae of no great significance. Thirty years later, when these green cells were recognized as prokaryotes with the chlorophyll pigments of chlorophytes, and were baptized as . they elicited more attenti

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The Evolution of Algal Chloroplasts,omewhat later . evolved, but then came an explosive radiation of many protist groups, fungi, plants and animals. In this tree, I have put in boldface lettering those groups which contain species with chloroplasts. A glance at the tree shows that the algae are polyphyletic. Euglenoids evolved very ea

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Comparison of Sequences and Organization of Photosynthesis Genes among the Prochlorophyte ,, Cyanob intermediate between cyanobacteria and chloroplasts or on a branch associated with . sp. strain Pasteur Culture Collection (PCC) 7942 (one of the strains hitherto known as .) adjacent to the chloroplast lineage. The P. ..L and .S genes are arranged in an operon, as is the case in cyanobacterial and

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Origin and Evolution of Plastids from Chlorophyll-,+,-Containing Algae: Suggested Ancestral Relatioyotes have been suggested for some time (Raven 1970; Margulis 1981; Morden and Golden 1989), but have turned out to be less probable on the basis of rRNA (Seewaldt and Stackebrandt 1982; Turner et al. 1989) and RNA-polymerase sequences (Palenik and Haselkorn 1991).

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The Origin, Losses and Gains of Chloroplasts,reen reticulate amoeboflagellate genus . It has been suggested that the green chloroplasts of . and the other members of the euglenoid class Euglenophyceae also arose by a secondary symbiosis involving a eukaryotic alga (possibly a green alga). However, more and more evidence supports the alternativ

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