The respiratory gaseous exchanges of detached whole mangrove seedlings (Avicennia, Bruguiera, Rhizophora) in a range of O(2) concentrations from 0 to 21% (air) were markedly reduced by the presence of external CO(2). Aerobic respiration decreased steadily for 16 days but the RQ remained at unity.In anoxia CO(2) output fell to half that in air. Ethanol accumulation was negligible but, relatively...

Young seedlings of buckwheat (Fagopyrum esculentum) respire in air with an RQ of unity. Analysis of respiratory substrates coupled with a study of the utilization of acetate-(14)C and glucose-(14)C suggest that both the Embden-Meyerhof-Parnas, tricarboxylic acid and pentose phosphate sequences participate in the total respiratory catabolism.In anoxia CO(2) dropped to one third of the aerobic ra...