I need help please!!


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Joined: Tue Oct 30, 2007 10:20 pm

I need help please!!

Post by agakaron24 » Tue Oct 30, 2007 10:40 pm


I had a laboratorium classe and I need to make a report in the following subject:

"The effect of potassium and abscisic acid on the mechanism of stomatal opening"

we were using:
KCL 0 10 50 100 200 500 (mM) and
ABA zero and 10-3 (M)

is there anybody with knowledge that can provide some explanation, information or even some documents about this topic?

I would really appreciate some help.

Thank you.

Posts: 2
Joined: Sun Oct 21, 2007 12:35 pm

Post by teja » Sun Nov 04, 2007 12:24 pm

well,opening of stomata is due to difference in osmatic concentration.u know[i assume] guard cells r the only epidermal cells that contain chloroplast.during day time,the following events hapen which opens stomatal pore.

synthesis of ATP-driving out of H+ IONS out of guardcells-influx ofK+ IONS ALONG WITH CL- IONS-INCREASE in osmolarity of guard cells-inflow of water-opening of cells due to bulging

ABA plays an imp.role in controlling transpiration by influencing the flow of water.


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