Production and characterization of arabinogalactan protein (AGP) from a hairy root line of Catharanthus roseus (L.) G. Don

Arabinogalactan protein (AGP), a class of cell wall proteoglycan, was isolated from the hairy root cultures of a newly developed hairy root line IIT-BT/D1 of Catharanthus roseus (L.) G. Don. AGP was found to be present both in the roots (0.3 mg/g fresh weight) and in the spent media (47 mg/L). The compositional analysis revealed the predominance of arabinose and galactose sugar, a characteristic feature of AGP.