학술논문

THE UPTAKE OF MANNITOL AND SORBITOL BY A SPECIES OF CHLORELLA (CHLOROPHYCEAE).
Document Type
Article
Source
Journal of Phycology. Dec86, Vol. 22 Issue 4, p436-440. 5p.
Subject
*SORBITOL
*CHLORELLA
*CHLORELLACEAE
*RESPIRATION
*PERMEABILITY
*PHOTOSYNTHESIS
Language
ISSN
0022-3646
Abstract
Chlorella saccharophila (Krüger) Nadson takes up mannitol and sorbitol in the light and the dark. The rate of uptake is concentration dependent, is not affected by pH in the range pH 6.0 to 8.0 and is not stimulated by light. Uptake is inhibited by the respiration inhibitor sodium azide (10[sup-2] M) but not by 3-(3,4-dichlorophenyl)-1, 1-di-methyl urea (10[sup-6] M), an inhibitor of photosynthesis. Sorbitol, but not mannitol, stimulates the rate of dark respiration but both support the heterotrophic growth of the alga. Both compound permeate the cells of C. miniata, and two strains of C. pyrenoidosa but do not support the heterotrophic growth of these algae. The cells of C. vulgaris are impermeable to both compounds. [ABSTRACT FROM AUTHOR]