Emilia Jarochowska schreef
I'm searching for any tip about the importance of photosynthetical
utilisation of water in the whole sucking force of leaves. Does oxygen
production contribute to the osmotic potential of xylem, and therefore
to water absorption in roots?
I don't need any quantitative information, a simple yes/no would satisfy
me as long as it's based on facts. I'll be very grateful for your help

Best regards,

+ + +
Afraid I don't have any numbers, but I never heard that the water used up by
photosynthesis is worth mentioning when compared to water lost in
evaporation.
PvR