Original video: https://youtu.be/0rBZkk8AYRg
C4 photosynthesis is an adaptation in certain plants to optimize carbon fixation in hot and arid conditions. These plants, like corn and sugarcane, employ a specialised pathway involving the production of a four-carbon compound. This process enhances water-use efficiency and reduces photorespiration, allowing the plants to thrive in environments with high temperatures and limited water availability. The C4 pathway involves distinct cell types and biochemical reactions, ultimately leading to improved photosynthetic performance in challenging climates.
Video Timestamps:
00:00 Recap carbon reaction Calvin cycle
4:24 Inorganic carbon-concentrating mechanism C4 photosynthetic carbon fixation
12:30 C4 photosynthetic carbon cycle
19:20 Reacrion of C4 photosynthesis
28:34 C4 photosynthesis pathways
33:29 C3 vs C4 photosynthesis
34:15 C4 sub-type photosynthesis
38:43 Karanz-type C4 assimilates CO2 by the concerted action of two different types of cells
41:23 The C4 subtype uses different mechanisms to decarboxylate 4 carbon acid to transport to bundle sheath cells
44:48 Bundle sheath cells and mesophyll cells exhibit anatomical and biochemical differences
49:00 NADP-ME, NAD-ME, PEPCK
49:20 C4 cycle also concentrate co2 in single cells
51:03 Light regulates the activity of the key C4 enzyme
55:20 Photosynthetic assimilation of CO2 in C4 plants require more transport process than in C3 plants
Keywords: C4 photosynthesis, carbon fixation, photosynthesis evolution, plant physiology, biochemistry, Rubisco, photorespiration, carbon concentrating mechanisms, C3 photosynthesis, C4 pathway, CAM photosynthesis, Kranz anatomy, mesophyll cells, bundle sheath cells, PEP carboxylase, malate, aspartate
Location:
Faculty of Agriculture, Universiti Putra Malaysia
Fakulti Pertanian, Universiti Putra Malaysia, 43000 Seri Kembangan, Selangor
XPMM+9J Seri Kembangan, Selangor
2.9845517506267742, 101.73803356324866
Attribution 4.0 International — CC BY 4.0 - Creative Commons
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