查看文章

This study was performed to isolate and characterize Trichoderma species from the rhizosphere of holm oak, olive and lavender in a nursery to select effective antagonistic and growth-promoting agents and use them to amend nursery plant growth substrates. Among the isolated Trichoderma species, three from olive (T. asperellum T2, T. hamatum T3, and T. harzianum T6), three from holm oak (T. hamatum T19, T. asperellum T20, and T. virens T21) and two from lavender (T. asperellum T12 and T. harzianum T14) were selected for the in vitro antagonism test against the plant pathogens Sclerotinia sclerotiorum, Rhizoctonia solani, Verticillium dahliae, Phytophthora nicotianae and P. cinnamomi. The mycelial growth of each target species was differently and directly affected by each Trichoderma isolate and its volatile and non-volatile metabolites, suggesting multiple mechanisms in the antagonistic activity. The ability …