Search results
Results from the WOW.Com Content Network
C 4 carbon fixation or the Hatch–Slack pathway is one of three known photosynthetic processes of carbon fixation in plants. It owes the names to the 1960s discovery by Marshall Davidson Hatch and Charles Roger Slack. [1] C 4 fixation is an addition to the ancestral and more common C 3 carbon fixation.
Maize (Zea mays, Poaceae) is the most widely cultivated C 4 plant.[1]In botany, C 4 carbon fixation is one of three known methods of photosynthesis used by plants. C 4 plants increase their photosynthetic efficiency by reducing or suppressing photorespiration, which mainly occurs under low atmospheric CO 2 concentration, high light, high temperature, drought, and salinity.
This process alone is similar to that of C4 plants and yields characteristic C4 fractionation values of approximately -11‰. [6] However, in the afternoon, CAM plants may open their stomata and perform C3 photosynthesis. [6] In daytime alone, CAM plants have approximately -28‰ fractionation, characteristic of C3 plants. [6]
English: C4 photosynthesis is really complicated. Microscope picture is my own work—File:Zea mays leaf Kranz anatomy 1 200×.png. Aligned for best display at 20%, 40%, 60%, 80%, and 100%. 10% increments may also work. See File:C4 photosynthesis is less complicated.svg for a simpler version, without scary molecules and arrows and chemistry.
The evolution of photosynthesis refers to the origin and subsequent evolution of photosynthesis, the process by which light energy is used to assemble sugars from carbon dioxide and a hydrogen and electron source such as water. It is believed that the pigments used for photosynthesis initially were used for protection from the harmful effects ...
Deutsch: Allgemeine Übersicht über C4-Photosynthese des Typus NADP-ME. Die Umsetzung von 3-Phosphoglycerat zu Glycerinaldehyd-3-phosphat (ein Teil des Calvinzyklus) erfolgt in den Chloroplasten der Mesophyllzelle; der Übersicht halber wurde dies nicht eingezeichnet.
Cyanobacteria such as these carry out photosynthesis. Their emergence foreshadowed the evolution of many photosynthetic plants and oxygenated Earth's atmosphere. Biological carbon fixation, or сarbon assimilation, is the process by which living organisms convert inorganic carbon (particularly carbon dioxide, CO 2) to organic compounds.
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.