Antifungal Mechanism of Dipicolinic Acid and Its Efficacy for the Biocontrol of Pear Valsa Canker.

is a fatal canker pathogen that causes significant reduction of crop yield in pear orchards. invades the trunk phloem, and is difficult to control by chemical treatment. In this work, it was found for the first time that -produced dipicolinic acid (DPA) exhibits antifungal activity against different canker pathogens, including , , , and .