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Question
Does the C4 plants have RuBisCO?
Does the C4 plants have RuBisCO?
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Solution
Yes, C4 plant has Rubisco enzyme.In C4 plant it is present in bundle sheath cells.
What Biol 1510 students need to remember about C4 is that these plants have added a CO2 concentration mechanism to feed rubisco and the Calvin cycle; the mechanism uses PEP carboxylase to initially make a 4-carbon compound, that then releases CO2 to rubisco in leaf cells that are exposed to little oxygen. While this mechanism reduces the oxygenase activity of rubisco, it has an extra energy cost in the form of another ATP per mole CO2 fixed.
What Biol 1510 students need to remember about C4 is that these plants have added a CO2 concentration mechanism to feed rubisco and the Calvin cycle; the mechanism uses PEP carboxylase to initially make a 4-carbon compound, that then releases CO2 to rubisco in leaf cells that are exposed to little oxygen. While this mechanism reduces the oxygenase activity of rubisco, it has an extra energy cost in the form of another ATP per mole CO2 fixed.
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