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Endophytic fungi are organisms that spend most of their life cycle within plant tissues without causing any visible damage to the host plant. Many endophytes were found to secrete specialized metabolites and/or emit volatile organic compounds (VOCs), which may be biologically active and assist fungal survival inside the plant as well as benefit their hosts. We report on the isolation and characterization of a VOCs-emitting endophytic fungus, isolated from an olive tree ( Olea europaea  L.) growing in Israel; the isolate was identified as  Daldinia cf .  concentrica . We found that the emitted VOCs were active against various fungi from diverse phyla. Results from postharvest experiments demonstrated that  D .  cf .  concentrica  prevented development of molds on organic dried fruits, and eliminated  Aspergillus niger  infection in peanuts. Gas chromatography–mass spectrometry analysis of the volatiles led to identification of 27 VOCs. On the basis of these VOCs we prepared two mixtures that displayed a broad spectrum of antifungal activity. In postharvest experiments these mixtures prevented development of molds on wheat grains, and fully eliminated  A .  niger  infection in peanuts. In light of these findings, we suggest use of  D .  cf .  concentrica  and/or its volatiles as an alternative approach to controlling phytopathogenic fungi in the food industry and in agriculture.

Use of the Endophytic Fungus Daldinia cf. concentrica and Its Volatiles as Bio-Control Agents