Title: Roles of Circadian Rhythms, Light and Temperature in the Regulation of Phosphoenolpyruvate Carboxylase in Crassulacean Acid Metabolism
Abstract: Phosphoenolpyruvate carboxylase (PEPC) plays a key role in the leaf tissue of CAM plants. It catalyses the nocturnal fixation of atmospheric CO2 (as HCO3 −) into oxaloacetate, which is subsequently reduced to malate and stored in the vacuole. During the day, malate released from the vacuole is decarboxylated and the resulting CO2 is fixed via the Calvin cycle (e.g. Osmond and Holtum 1981). Consideration of the metabolic pathways involved in CAM suggests that mechanisms must exist to permit flux through PEPC at night and reduce or eliminate it during the day. In this chapter we describe the role of phosphorylation in the regulation of PEPC in the CAM plant Bryophyllum (Kalanchoë) fedtschenkoi.
Publication Year: 1996
Publication Date: 1996-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 39
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