Beta galactosidase is an enzyme associated with cell wall degradation. It is widely distributed in plant tissues, taking part in a series of physiological and biochemical processes. According to recent studies, beta galactosidase genes have already been isolated from a number of plant species. Beta galactosidase genes belong to a multigene family. Increasing studies have shown that different members of beta galactosidase gene family exhibit a wide range of expression profiles throughout plants development. ...