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CAM metabolism - traduction vers Anglais
![CAM is named after the family [[Crassulaceae]], to which the [[jade plant]] belongs.](https://commons.wikimedia.org/wiki/Special:FilePath/Crassula Ovata.jpg?width=200 "CAM is named after the family [[Crassulaceae]], to which the [[jade plant]] belongs.")
![Cross section of a CAM (Crassulacean acid metabolism) plant, specifically of an [[agave]] leaf. [[Vascular bundle]]s shown. Drawing based on microscopic images courtesy of Cambridge University Plant Sciences Department.](https://commons.wikimedia.org/wiki/Special:FilePath/Cross section of agave, a CAM plant..jpg?width=200 "Cross section of a CAM (Crassulacean acid metabolism) plant, specifically of an [[agave]] leaf. [[Vascular bundle]]s shown. Drawing based on microscopic images courtesy of Cambridge University Plant Sciences Department.")
Смотрите также
общая лексика
растение с обменом по типу толстянковых
CAM-растение
Définition
Wikipédia
Crassulacean acid metabolism, also known as CAM photosynthesis, is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions that allows a plant to photosynthesize during the day, but only exchange gases at night. In a plant using full CAM, the stomata in the leaves remain shut during the day to reduce evapotranspiration, but they open at night to collect carbon dioxide (CO2) and allow it to diffuse into the mesophyll cells. The CO2 is stored as four-carbon malic acid in vacuoles at night, and then in the daytime, the malate is transported to chloroplasts where it is converted back to CO2, which is then used during photosynthesis. The pre-collected CO2 is concentrated around the enzyme RuBisCO, increasing photosynthetic efficiency. This mechanism of acid metabolism was first discovered in plants of the family Crassulaceae.
