New type of N<sub>2</sub>-fixing unicellular cyanobacterium (blue-green alga)

Abstract

A new N2-fixing unicellular cyanobacterium identified as a Synechococcus sp. was isolated and purified as an axenic culture. It fixed N2 aerobically either under continuous illumination or in alternating light-dark cycle. The N2-fixing properties of the new isolate and Gloeocapsa are discussed.

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