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Species-specific ability ofChlorella strains (Chlorophyceae) to form stable symbioses withHydra viridis

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Abstract

46 strains ofChlorella, identified by physiological and biochemical characters, were examined for their ability to form stable symbioses with aposymbioticHydra viridis. It was found to be a species-specific characteristic. Among the 15 taxa studied, onlyC. saccharophila var.ellipsoidea, C. saccharophila var.saccharophila, C. fusca var.vacuolata, C. kessleri, C. luteoviridis, andC. protothecoides formed stable symbioses withHydra viridis. Among the 11 known physiological and biochemical characters of theseChlorella species, only acid tolerance seems to be correlated with symbiosis: All symbiotic species are capable of growing at or below pH 4.0.

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References

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Kessler, E., Huss, V.A.R. & Rahat, M. Species-specific ability ofChlorella strains (Chlorophyceae) to form stable symbioses withHydra viridis . Pl Syst Evol 160, 241–246 (1988). https://doi.org/10.1007/BF00936050

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Key words

  • Algae
  • Chlorophyceae
  • Chlorella
  • Hydra viridis
  • Biochemical taxonomy
  • symbiosis
  • acid tolerance