“…Arabidopsis AtBGLU12-17 was related to the use of Arabidopsis avonoids, AtBGLU15 can catalyze the hydrolysis of Q3G7R, K3G7R and avonol 3-O-glucosides [4], these genes and PbBGLU19 (group III) were clustered together, and it is speculated that PbBGLU19 may be involved in the hydrolysis of avonoid glycosides in pear. PbBGLUs IV-A was clustered together with AtBGLU (40,41,43,44) and some poplar BGLU genes, but the functions of these genes have not yet been explored. The functions of AtBGLU45, AtBGLU46, AtBGLU47 in Arabidopsis and PtrBGLU6 in Poplar had been clari ed, they can catalyze the hydrolysis of monolignol glucosides during ligni cation [16,17,19 ], the three genes PbBGLU1, PbBGLU15 and PbBGLU16 in the PbBGLUs group IV-B were clustered together with these functional genes, speculating that PbBGLU1, PbBGLU15 and PbBGLU16 may be able to affect the ligni cation by catalyze the hydrolysis of monolignol glucosides in pear fruit, which in turn affects the development of pear stone cells.…”