Potassium and lower osmotic potential

Hello!

I was wondering how potassium lowers osmotic potential? Also, how would this improve drought tolerance? Is this because a lower osmotic potential means the water cannot move as freely and therefore cannot move down and become ground water or be absorbed by plants as quickly?

Thanks very much!

Gretchen, potassium lowers osmotic potential in plants and this is something that we did not cover in our course.

Thank you!