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Does photorespiration help avoid photorespiration?

by Swetasuria
Tags: photorespiration
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Swetasuria
#1
Oct19-13, 10:22 AM
P: 47
In C3 plants, RuBisCO acts as an oxygenase when CO2 concentration is below a certain value. As a result, a process called photorespiration takes place.
Photorespiration leads to the formation of toxic ammonia and CO2. Moreover, it uses up ATP and don't form glucose. So its considered a wasteful process.

I was wondering if the formation of CO2 helps to increase its concentration and thereby result in RuBisCO acting as a carboxylase (which is what we want). So in a way, can we say that photorespiration stops itself from proceeding?
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mishrashubham
#2
Oct20-13, 12:20 AM
P: 605
The reaction probably reaches an equilibrium. More about equilibrium and Le Chatelier's principle.


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