Algicidal properties of a bloom-forming blue-green alga, Oscillatoria sp.

✍ Scribed by Suvendra Nath Bagchi; Archna Palod; Vikas Singh Chauhan

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 517 KB
• Volume: 30
• Category: Article
• ISSN: 0233-111X
• DOI: 10.1002/jobm.3620300106

✦ Synopsis

An isolate of Oscillatoria from local eutrophic lake exhibits strong growth inhibitory effects, when phototrophically co-cultured with a green alga and other blue-green algae, including its natural predecessor. This effect was not observed on selected heterotrophic-organisms. The characteristic interaction was also demonstrated with culture filtrates and cell-free extracts, implying this effect to be due to some chemical released from Oscillaroriu. From the mid-log growth phase of the culture, a nonproteinaceous, moderately heat stable, and ether soluble metabolite was extracted by ether extraction. The primary site of the growth inhibitory substance (algicide) action appears-to be the photosynthetic oxygen evolution, tested in Anacystis nidulans.