An investigation of glycolate excretion in two species of blue-green algae

✍ Scribed by K. H. Cheng; A. G. Miller; Brian Colman

• Publisher: Springer-Verlag
• Year: 1972
• Tongue: English
• Weight: 382 KB
• Volume: 103
• Category: Article
• ISSN: 0032-0935
• DOI: 10.1007/bf00387361

✦ Synopsis

The amount of (14)C-glycolate excreted by Oscillatoria sp. and Anabaena flos-aquae is less than 1% of the (14)C fixed by the algae during photosynthesis. Transfer of cells grown on 5% CO2 in air to a medium of low bicarbonate concentration or treatment of the cells with isonicotinyl hydrazide (INH) during photosynthesis, caused little increase in glycolate excretion. α-Hydroxysulfonates failed to stimulate massive excretion of glycolate. Although these blue-green algae excreted little glycolate, a significant proportion of the photosynthetically fixed carbon was excreted in the form of basic, neutral and acidic compounds, and such excretion was greater in 5% CO2-grown cells than in air-grown cells.