Prochlorococcus marinus nov. gen. nov. sp.: an oxyphototrophic marine prokaryote containing divinyl chlorophyll a and b |
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Authors: | Sallie W Chisholm Sheila L Frankel Ralf Goericke Robert J Olson Brian Palenik John B Waterbury Lisa West-Johnsrud Erik R Zettler |
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Institution: | (1) 48-425 Ralph M. Parsons Laboratory, Massachusetts Institute of Technology, 02139 Cambridge, MA, USA;(2) Woods Hole Oceanographic Institution, 02543 Woods Hole, MA, USA;(3) Present address: Department of Molecular Genetics and Cell Biology, University of Chicago, 60637 Chicago, IL, USA |
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Abstract: | Several years ago, prochlorophyte picoplankton were discovered in the N. Atlantic. They have since been found to be abundant within the euphotic zone of the world's tropical and temperate oceans. The cells are extremely small, lack phycobiliproteins, and contain divinyl chlorophyll a and b as their primary photosynthetic pigments. Phylogenies constructed from DNA sequence data indicate that these cells are more closely related to a cluster of marine cyanobacteria than to their prochlorophyte relatives Prochlorothrix and Prochloron. Several strains of this organism have recently been brought into culture, and herewith are given the name Prochlorococcus marinus. |
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Keywords: | Prokaryote Prochlorophyte Prochlorococcus marinus Cyanobacteria Picoplankton Molecular phylogeny Divinyl chlorophyll |
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