Fermentative Metabolism of Chlamydomonas reinhardtii: II. Role of Plastoquinone.
Evidence is presented to substantiate a chloroplastic respiratory pathway in the green alga, Chlamydomonas reinhardtii, whereby reducing equivalents generated during the degradation of starch enter the thylakoidal chain at the plastoquinone site catalyzed by NADH-plastoquinone reductase. In this formulation, the reduced plastoquinone is oxidized either by the photoevolution (photosystem I) of H(2) under anaerobic conditions or by O(2) during dark respiration.
Gfeller
R P
RP
Institute for Photobiology of Cells and Organelles, Brandeis University, Waltham, Massachusetts 02254.
Gibbs
M
M