In Vitro Antifungal Activity of Plant Extracts on Pathogenic Fungi of Blueberry ( sp.).

Three pathogenic fungi of blueberry ( spp.) responsible for dieback disease, identified as , and , were isolated in the northwestern region of the state of Michoacán, Mexico. The mycelial growth in vitro of these fungi was inhibited by extracts from , and , medicinal plants collected in Sahuayo, Michoacán, Mexico. The extracts showed different degrees of inhibition; the most effective were: M5L extract from and M6LFr extract from , both of which inhibited 100% of the mycelial growth of and ; and M4LS extract from , which inhibited 100% of the mycelial growth of the three pathogens. The extracts were fractionated by thin layer and column chromatography, and the most active fractions were analyzed by gas chromatography-mass spectrometry. The major compounds identified in extract were Phytol and α-Sitosterol. The compounds identified in were Toluene and Benzene, 1,3-bis(3-phenoxyphenoxy)-. In , the compound identified was Hexanedioic acid, bis(2-ethylhexyl) ester. These results show the potential of , and as a source of antifungal compounds.