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ORGANIC EXCRETION BY DUNALIELLA TERTIOLECTA 1
Author(s) -
Huntsman Susan A.
Publication year - 1972
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1972.tb04002.x
Subject(s) - excretion , biology , nutrient , biochemistry , excretory system , carbohydrate , food science , ecology , anatomy
SUMMARY Excretion of C 14 ‐labeled organic material by Dunaliella tertiolecta was observed under a variety of conditions. In healthy cultures, percent excretion tints related to cell density bill independent of light and preconditioning of the medium. Exaction was lower in nutrient‐limited culture than in an enriched medium, and in both cases was minimal during logarithmic growth. Increases in dissolved carbohydrate during stationary phase represented an accumulation of high molecular weight compounds. The general composition of labeled excretory products was similar in both actively growing and stationary cultures. The data suggest that excretion may involve different processes at high and low cell densities.