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== Definition ==
== Definition ==
=== Glossary of "Plant Biology (1st ed.)" by [[Graham_Graham_Wilcox_2003|Graham et al. (2003)]] ===
* The metabolic pathway in which carbon dioxide is fixed at night by the [[C4_pathway|C<sub>4</sub> pathway]] and simple sugars produced in the day by the [[C4_pathway|C<sub>3</sub> pathway]]. The name derives from the stonecrop family of flowering plants (Crassulaceae) where this pathway was first recognized.
=== Glossary of Plant Systematics (1st ed.) by [[Simpson_2006|Simpson (2006)]] ===
* An alternate photosynthetic pathway in some xeric, generally succulent plants and functioning to conserve water, in which initial fixation of carbon dioxide carboxylase to form malic acid, which is stored within vacuoles of the mesophyll cells; during the day stomata close and CO<sub>2</sub> is released from the vacuoles into the cytoplasm, where it is fixed in the chloroplasts. Abbr: ''CAM''.
=== Glossary of "Ecology (6th ed.)" by [[Krebs_2009|Krebs (2009)]] ===
=== Glossary of "Ecology (6th ed.)" by [[Krebs_2009|Krebs (2009)]] ===
* a form of photosynthesis in which the two chemical parts of [[photosynthesis]] are separated in time because CO<sub>2</sub> is taken up at night through the stomata (which are then closed during the day) and fixed to be used later in the day to complete photosynthesis carbon fixation; an adaptation used by desert plants to conserve water.
* a form of photosynthesis in which the two chemical parts of [[photosynthesis]] are separated in time because CO<sub>2</sub> is taken up at night through the stomata (which are then closed during the day) and fixed to be used later in the day to complete photosynthesis carbon fixation; an adaptation used by desert plants to conserve water.
=== Glossary of "Evolution of Plants (2nd ed.)" by [[Willis_McElwain_2014|Willis & McElwain (2014)]] ===
=== Glossary of "Evolution of Plants (2nd ed.)" by [[Willis_McElwain_2014|Willis & McElwain (2014)]] ===
* Plants that have a variation of the [[C4_pathway|C4 pathway]] where crassulacean acid metabolism is used to fix atmospheric CO<sub>2</sub>. Characteristic of most succulent plants.
* Plants that have a variation of the [[C4_pathway|C4 pathway]] where crassulacean acid metabolism is used to fix atmospheric CO<sub>2</sub>. Characteristic of most succulent plants.
== 文献（引用） ==
== 文献（引用） ==
