title: Cytochrome and alternative pathway respiration in green algae : measurements using inhibitors and o(2) discrimination.
abstract: Inhibitor titration curves and discrimination against (18)O(2) by mitochondrial respiration in three strains of green algae (Selenastrum minutum [Naeg.] Collins, and two strains of Chlamydomonas reinhardtii Dangeard) with differing respiratory capabilities were determined. Discrimination for cytochrome pathway respiration ranged from 19.89 to 20.43%. Discrimination for alternative pathway respiration by wild-type C. reinhardtii (measured in the presence of KCN) was 25.46%, while discrimination values for a cytochrome oxidase deficient mutant of C. reinhardtii ranged from 24.24 to 24.96%. In the absence of KCN, the alternative pathway was not engaged in wild-type C. reinhardtii, the only algal strain that possessed both cytochrome and alternative pathway capacities.
authors: Department of Biology, Queen's University, Kingston, ON, Canada K7L 3N6.
authors: H G
authors: HG
authors: Weger
authors: R D
authors: RD
authors: Guy
authors: D H
authors: DH
authors: Turpin