Strains of Neopestalotiopsis sp. are in vitro antagonists of Cryphonectria parasitica

Publication date: April 2020Source: Biological Control, Volume 143Author(s): Ana J. González, Trapiello EstefaníaAbstractAs Pestalotiopsis sensu lato has been described as a producer of numerous metabolites that are effective against other microorganisms and since they were found in samples of chestnut bark with the appearance of healed cankers, the present study was proposed to assess whether these isolates had any effect on the fungus causing the chestnut blight, Cryphonectria parasitica.For this, 13 isolates from 60 samples of chestnut bark were selected and tested against C. parasitica, finding that two of them were able to eliminate this fungus, another strain limited its growth and the rest had no effect on it. To identify these fungi, a multiphasic approach was used, which showed that the two antagonistic strains belonging to the species Neopestalotiopsis zimbabwana, one of Neopestalotiopsis sp. and the rest of the isolated strains corresponded to the genus Pestalotiopsis. These two strains were inoculated in chestnut plants to verify their possible pathogenicity, being innocuous for the tree. Therefore, two strains with great potential as agents of biological control against C. parasitica have been identified.
Source: Biological Control - Category: Biology Source Type: research
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