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(C) The correct answer is $C$. $I. Zelitch$ $(1963)$ proposed the glycolate theory for stomatal opening. According to this theory,under low $CO_2$ con

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Zelitch

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(C) The correct answer is $C$. $I. Zelitch$ $(1963)$ proposed the glycolate theory for stomatal opening. According to this theory,under low $CO_2$ concentration,photorespiration occurs in guard cells,leading to the production of glycolic acid. The oxidation of glycolic acid produces $H_2O_2$ and glyoxylic acid,which increases the osmotic pressure of the guard cells,resulting in the influx of water and the opening of stomata.

The scientist who proposed that the production of glycolic acid in guard cells is an important factor in stomatal opening is:

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