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Abstract
Osmotin and osmotin-like proteins (OLPs) are pathogenesis-related (PR) proteins, whose synthesis is normally stimulated upon infection of plants by pathogens. A strawberry genomic clone containing an osmotin-like protein (OLP) gene was isolated and sequenced. This clone contains an open reading frame of 681 nucleotides without any intron. The predicted amino acid sequence of the protein shares high degrees of homology with a number of other OLPs and related proteins, of which several are known to have antifungal activities. Southern hybridization analysis of strawberry genomic DNA suggested that the OLP is coded by a multi-gene family. Results from reverse transcriptase-polymerase chain reaction indicated that this OLP gene is expressed in uninfected strawberry plants.
