What would be the immediate consequence if all of the glyceraldehyde 3-phosphate made during the carbon fixation and reduction phases of the calvin cycle were used to make glucose?

The Plant cells would not be able to generate a RuBP, Ribose 1,5 Biphosphate is the immediate consequence if all of the glyceraldehyde 3-phosphate made during the carbon fixation and reduction phases of the calvin cycle were used to make glucose.