How do different solutions affect osmosis?

the movement of osmosis is affected by the concentartion gradient

based on the meaning of osmosis:

Osmosis is the movement of water or other solvent through a plasma membrane from a region of low solute concentration to a region of high solute concentration. Osmosis is passive transport, meaning it does not require energy to be applied.

I would say that a disease that would harm the root could possibly force it to not take in water. It could destroy the root itself in which would cause the whole plant to die. The disease could even stop it from reproducing so that new flowers can bloom.  

Explanation:

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