Crassulacean acid metabolism: plastic, fantastic
نویسندگان
چکیده
منابع مشابه
Crassulacean acid metabolism: plastic, fantastic.
The occurrence, activity and plasticity of the CAM pathway is described from an introductory viewpoint, framed by the use of the four "Phases" of CAM as comparative indicators of the interplay between environmental constraints and internal molecular and biochemical regulation. Having described a number of "rules" which seem to govern the CAM cycle and apply uniformly to most species, a number o...
متن کاملUpdate on Crassulacean Acid Metabolism Crassulacean Acid Metabolism. A Plastic Photosynthetic Adaptation to Arid Environments
Crassulacean acid metabolism (CAM) is an important elaboration of photosynthetic carbon fixation that allows chloroplast-containing cells to fix CO2 initially at night using phosphoenolpyruvate carboxylase (PEPC) in the cytosol. This leads to the formation of C4 organic acids (usually malate), which are stored in the vacuole. Subsequent daytime decarboxylation of these organic acids behind clos...
متن کاملCrassulacean acid metabolism. A plastic photosynthetic adaptation to arid environments.
Crassulacean acid metabolism (CAM) is an important elaboration of photosynthetic carbon fixation that allows chloroplast-containing cells to fix CO2 initially at night using phosphoenolpyruvate carboxylase (PEPC) in the cytosol. This leads to the formation of C4 organic acids (usually malate), which are stored in the vacuole. Subsequent daytime decarboxylation of these organic acids behind clos...
متن کاملCrassulacean Acid Metabolism
Crassulacean acid metabolism (CAM) is a CO2 acquisition, CO2 transient storage and CO2 concentrating mechanism based on organic acid synthesis. CO2 acquisition occurs in the dark. CO2 is fixed and stored in the form of organic acids. Remobilization of CO2 from the organic acids occurs in the light and leads to massive CO2 concentration inside photosynthesizing plant organs (green leaves or stem...
متن کاملCrassulacean acid metabolism-cycling in Euphorbia milii
Crassulacean acid metabolism (CAM) occurs in many Euphorbiaceae, particularly Euphorbia, a genus with C3 and C4 species as well. With the aim of contributing to our knowledge of the evolution of CAM in this genus, this study examined the possible occurrence of CAM in Euphorbia milii, a species with leaf succulence and drought tolerance suggestive of this carbon fixation pathway. Leaf anatomy co...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 2002
ISSN: 1460-2431,0022-0957
DOI: 10.1093/jexbot/53.369.569