`CO_2` released by deacidification is accepted by ribulose bisphosphate and fixed to carbohydrate by `C_3` cycle. `"Malic acid" + "NAD"^(+) to "Pyruvic acid" + NADH + CO_2` v) Pyruvic acid may be oxidised to `CO_2` by Krebs cycle or may be reconverted to phosphoenol pyruvic acid. iv) In light (stomata are closed ) the malic acid is decarboxylated to produce pyruvic acid and evolve `CO_2`. `"OAA" + NADH to "Malic acid" + NAD^(+)` The malic acid, produced in dark as a result of acidification is stored in the vacuole. This malic acid breaks up into `CO_2` and pyruvic acid in day time and `CO_2` released is utilised in `C_3`-cycle. iii)The reaction occurs in the presence of NADH. `PEP + CO_2 + H_2 O to "OAA" + H_3 PO_4` ii) DAA is subsequently converted to malic acid in the presence of enzyme malic dehydrogenase. Metabolic pathway Various steps involved in the CAM pathway are as follow: i) In dark (stomata are open) the `CO_2` combines with phosphoenol pyruvic acid (PEP) to from oxaloacetic acid (OAA) in the presence of enzyme PEP- carboxylase. photosynthesis without much loss of water. Thuc tính c bn C4H6O5 Axit Malic cp công nghip s dng trong sn xut. CAM is a kind of adaptation in succulents to carry out. Most characteristic feature of these plants is the presence of scot active ( opens at height) stomata. All these plants are called as CAM plants. Similar metabolism has been found to occur in plants belonging to Cactus (e.g., Opuntia), Orchid,Partulala and Pineapple families. Since the process was first observed in the plant belonging to family Crassulaceae so it was named as Crassulacean Acid Metabolism (CAM). Products Building Blocks Explorer Technical Documents Site Content Papers Genes Chromatograms. Solution : Crassulacean acid metabolism (CAM) : Certain plants, especially succulents which grow under extremely xeric condition have ability to fix atmospheric `CO_2` in dark. Find malic acid and related products for scientific research at MilliporeSigma.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |