C4 structure
[si-fɔr ˈstrʌk.tʃər]
nounpl: C4 structures
estrutura C4
1. A photosynthetic pathway used by certain plants in which carbon dioxide is first fixed into a four-carbon compound (oxaloacetate) rather than the three-carbon compound (3-phosphoglycerate) of the Calvin cycle
Corn and sugarcane utilize a C4 structure for photosynthesis, making them more efficient in hot and dry climates.
Milho e cana-de-açúcar utilizam uma estrutura C4 para fotossíntese, tornando-os mais eficientes em climas quentes e secos.
2. The biochemical and anatomical arrangement of mesophyll and bundle sheath cells that characterizes C4 plants
The C4 structure allows plants to concentrate carbon dioxide around the enzyme RuBisCO, reducing photorespiration.
A estrutura C4 permite que as plantas concentrem dióxido de carbono ao redor da enzima RuBisCO, reduzindo a fotorrespiração.
C4 structures are particularly important in Brazilian agriculture, as many major crops like sugarcane (cana-de-açúcar) are C4 plants. This is relevant to discussions of crop efficiency, biofuel production, and agricultural adaptation to climate variations in tropical and subtropical regions.
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