Competition between heterotrophic and autotrophic microplankton for dissolved nutrients [Rhodotorula rubra, Selenastrum capricornutum]

When a heterotrophic (Rhodotorula rubra) and a phototrophic (Selenastrum capricornutum) plankton were grown together in dilute phosphate (Pi) continuous cultures, coexistence occurred only when the heterotroph was growthrate limited by organic carbon (C). Because of its higher affinity for Pi, and b...

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Bibliographic Details
Published inMicrobial ecology Vol. 7; no. 3; p. 199
Main Authors Brown, E J, Button, D K, Lang, D S
Format Journal Article
LanguageEnglish
Published United States 01.09.1981
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Summary:When a heterotrophic (Rhodotorula rubra) and a phototrophic (Selenastrum capricornutum) plankton were grown together in dilute phosphate (Pi) continuous cultures, coexistence occurred only when the heterotroph was growthrate limited by organic carbon (C). Because of its higher affinity for Pi, and because C starvation does not affect the heterotrophic yeast's ability to transport Pi, the concentration of organic carbon indirectly controlled the biomass of the phototroph. The results support a threshold model of microbial growth.
Bibliography:F60
F
ISSN:0095-3628
1432-184X
DOI:10.1007/BF02010303