Hydrolyzes p-nitrophenyl beta-D-glucoside and natural glucosides such as syringin, coniferin and p-coumaryl alcohol glucoside. May be involved in lignification by hydrolyzing monolignol glucosides. Hydrolysis of terminal, non-reducing beta-D-glucosyl residues with release of beta-D-glucose. A number of isoforms are produced. According to EST sequences. Expressed in stems and siliques. Belongs to the glycosyl hydrolase 1 family.