Zur Photosynthese grüner Pflanzen / Photosynthesis in Green Plants: IV: Versuche mit 2-Acetylamino-1.3.4-thiadiazolsulf onamid (Diamox) zur Hemmung eines O-Austausches zwischen CO 2 und H 2 O / IV: Experiments with 2-Acetylamino-1,3,4-thiadiazol Sulfonamide (Diamox) on the Inhibition of O exchange between CO 2 and H 2 O

It is shown that the rate of photosynthesis of Chlorella pyrenoidosa Chick, is partially inhibited by Diamox which has, however, no influence on the isotopic composition of the photosynthetic oxygen if H 2 18 O, C 16 O 2 and HC 16 O 3 ′ are used as substrates. No inhibition of the exchange between H 2 O and CO 2 on the surface om maize leaves could be observed if the leaves were exposed to a Diamox solution.