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C 4 carbon fixation or the Hatch–Slack pathway is a photosynthetic process in some plants. It is the first step in extracting carbon from carbon dioxide to be able to use it in sugar and other biomolecules. It is one of three known processes for carbon fixation."C 4" refers to the four-carbon molecule that is the first product of this type of carbon fixation.


If this turns out to be true of many C3 plants, it would explain why it has been so easy for C4 plants to evolve from C3 ancestors. CAM Plants These are also C4 plants but instead of segregating the C4 and C3 pathways in different parts of the leaf, they separate them in time instead.


The image above shows the C3 carbon fixation pathway also known as the Calvin Cycle, used my many types of plants. C4 Plants. The C4 process is also known as the Hatch-Slack pathway and is named for the 4-carbon intermediate molecules that are produced, malic acid or aspartic acid.


Science · Biology · Photosynthesis · Photorespiration: C3, C4, and CAM plants C3, C4, and CAM plants How the C4 and CAM pathways help minimize photorespiration.


The C4 pathway is a method plants use to convert atmospheric carbon dioxide into a chemical compound containing four carbons. About.com explains that plans that utilize this pathway usually originate in subtropical areas.


Corn,sugarcane and some shrubs are example of plants that follows C4 pathway. Calvin pathway is a common pathway in both C3 plants and C4 plants but it takes place only in the mesophyll cells of the C3 Plants but not in the C4 Plants. To know more about C3 and C4 pathway and photosynthesis in plants, vist BYJU’S.


Figure \(\PageIndex{1}\): The C4 Pathway The C4 pathway is designed to efficiently fix CO2 at low concentrations and plants that use this pathway are known as C4 plants. These plants fix CO2 into a four carbon compound (C4) called oxaloacetate. This occurs in cells called mesophyll cells.


But when the photosynthetic plant, prior going to the C3 pathway, produces oxaloacetic acid (OAA) or 4 -carbon compound as their first stable product is called as C4 or Hatch and Slack pathway.But when the plants absorb the energy of the sunlight at the day time and use this energy for the assimilation or fixing the carbon dioxide at night time is called as crassulacean acid metabolism or CAM.


The C4 photosynthetic carbon cycle is an elaborated addition to the C3 photosynthetic pathway. It evolved as an adaptation to high light intensities, high temperatures, and dryness. Therefore, C4 plants dominate grassland floras and biomass production in the warmer climates of the tropical and


For a considerable period of time, the Calvin cycle (C3 cycle) was thought to be the only dark reaction pathway in plants. Later, a new pathway of dark reaction called Hatch and Slack pathway or C4 cycle was described in some plants. Both these cycles (C3 and C4 cycles) show many similarities and differences.