Water soaked appearance of leaves due to sulphur dioxide pollution is caused by

Water soaked appearance of leaves due to sulphur dioxide pollution is caused by Destruction of chlorophyll and Damage to members.
It is known to affect chlorophylin in its high concentration, so high concentration of sulphur dioxide, destroys chlorophyll by eliminating the pital group of chlorophyll.
It refers to any one of a group of closely related water-soluble salts that are semi-synthetic derivatives of chlorophyll, differing in the identity of the cations associated with the anion.