Pre-harvest rot of pear fruit Golden Russet Bosc caused by Phytophthora lacustris and Phytophthora drechsleri in Argentina

Abstract

Phytophthora lacustris and P. drechsleri are report- ed causing a fruit rot of pear (Pyrus communis) Golden Russet Bosc in Argentina. The oomycetes were isolated from devel-oping brown rots of fruit observed pre-harvest. Phytophthora lacustris and P. drechsleri were identified on the basis of mor- phology and molecular identification using the ITS region ofribosomal DNA and confirmed as the causal agent by fulfilling Koch’s postulates. Phytophthora drechsleri was reported on pear in Argentina for the first time.