Protective Effects of Filtrates and Extracts from Fungal Endophytes on in .

Plants (Basel)

Department of Plant Production and Forest Resources, University Institute for Research in Sustainable Forest Management (iuFOR), University of Valladolid, Avda. Madrid 57, 34004 Palencia, Spain.

Published: May 2022

Fungal endophytes have been found to protect their hosts against multiple fungal pathogens. Frequently, the secondary metabolites produced by the endophyte are responsible for antifungal activity. To develop new bio-products that are more environmentally friendly than synthetic pesticides against , a serious pathogen of many plant species, the antifungal activity of filtrates or extracts from four endophytes was evaluated in different in vitro tests and in plants of . In the dual culture assays, the filtrate of one of the endophytes () completely inhibited the mycelial growth of the pathogen. Moreover, it showed a very low minimal inhibitory concentration (MIC). , an endophyte that also showed high inhibitory activity and a low MIC against in those two experiments, provided a clear growth promotion effect when the extracts were applied to seedlings. The extract of also manifested such a promotion effect and was the most effective in reducing the disease severity caused by the pathogen in lupine plants (73% reduction). Results demonstrated the inhibitory activity of the filtrates or extracts of these endophytes against . A better insight into the mechanisms involved may be gained by isolating and identifying the metabolites conferring this inhibitory effect against this oomycete pathogen.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182999PMC
http://dx.doi.org/10.3390/plants11111455DOI Listing

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