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Laboratory cultivation of prochloron, a tryptophan auxotroph



Laboratory cultivation of prochloron, a tryptophan auxotroph



Science 217(4564): 1034-1035



Laboratory cultures have been established of the didemnid symbiont Prochloron, a unique prokaryotic alga that synthesizes chlorophylls a and b but no phycobilin pigments. Cell division in Prochloron cultures occurs under acidic conditions (pH 5.5) in the presence of tryptophan. The alga is a naturally occurring tryptophan auxotroph that survives in nature by close association with the host, Diplosoma similis. The metabolic dysfunction that renders Prochloron auxotrophic may involve only the initial step of the tryptophan biosynthetic pathway.

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Accession: 005787592

Download citation: RISBibTeXText

PMID: 17839341

DOI: 10.1126/science.217.4564.1034


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