Regulation of Crassulacean acid metabolism

During the light period, when COi is being fixed in the chloroplasts by the RPP pathway, it is likely that the mechanisms discussed above for C3 photosynthesis are also functional in CAM plants [19]. Additional control mechanisms are expected to provide for the efficient functioning of the diurnal cycle of CO2 fixation. The functioning of CAM cannot, however, be interpreted solely in terms of enzymolo-gy, but rather will involve cellular compartmentation of enzymes and metabolites together with intracellular transport processes [17]. 

Although these regulatory mechanisms give a clue as to how the diurnal rhythm of CAM is maintained, many aspects of the process are still poorly understood and insufficient metaboUte data are available to pinpoint definitively the regulatory steps in the pathway. 

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Kluge, M., LUttge,U. The role of malic acid fluxes in regulation of Crassulacean Acid Metabolism (CAM) Osmoregulation of efflux at the tonoplast. In Membrane Transport in Plants. Zimmermann,M., Dainty, , (eds.), p. 101. Berlin, Heidelberg, New York Springer 1974... 

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