Effects of some carbon sources on growth and nitrogen fixation in the cyanobacterium Nostoc linckia

Abstract

Glucose, fructose, sucrose, maltose, and lactose stimulated photoheterotrophic growth of Nostoc linckia (Roth.)Born. as well as its heterocyst frequency, chlorophyll and protein contents, ammoniacal nitrogen uptake and nitrogenase activities. Glucose, fructose and sucrose also supported slow chemoheterotrophic growth. α-ketoglutarate, pyruvate, ribose, succinate, acetate, sorbose and formate were inhibitory.