1. Mortgaged proeprty can be transferred to another person provided the oan a/cis also transferred.
2.SO there is no such hindrance if your wife with the permission of creditor bank gift the plot in your name and consequently the loan a.c is also transferred to your name.
3. There is no special law for this and the Transfer of property Act very well permits this.
Another option is to foreclose the loan and then get this one fromyour wife/