Characterisation of secreted polysaccharides and (glyco)proteins from suspension cultures of Pyrus communis

Three major and two minor polysaccharides were identified from the extracellular polymers (ECP) of cell suspension cultures of Pyrus communis: (fucogalacto)xyloglucan (36%), galacturonan (33%), type II arabinogalactan (an arabinogalactan-protein, 29%), acidic (glucurono)arabinoxylan (2%) and heteromannan (trace) as well as a number of stress/defense-related (glyco)proteins.