Journal
JOURNAL OF FUNGI
Volume 9, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/jof9060610
Keywords
Colletotrichum spp; fungal metabolites; anthracnose; legumes; phytotoxins; metabolomics; chemotaxonomy
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Different fungal species of Colletotrichum genus cause anthracnose disease in major crops, resulting in significant economic losses globally. This study utilized the OSMAC approach integrated with targeted and non-targeted metabolomics profiling to investigate the secondary phytotoxic metabolites produced by pathogenic isolates of Colletotrichum truncatum and Colletotrichum trifolii. The phytotoxicity of the fungal crude extracts was also evaluated on their primary hosts and related legumes, correlating with the metabolite profile under different cultural conditions.
Different fungal species belonging to the Colletotrichum genus cause anthracnose disease in a range of major crops, resulting in huge economic losses worldwide. Typical symptoms include dark, sunken lesions on leaves, stems, or fruits. Colletotrichum spp. have synthesized, in vitro, a number of biologically active and structurally unusual metabolites that are involved in their host's infection process. In this study, we applied a one strain many compounds (OSMAC) approach, integrated with targeted and non-targeted metabolomics profiling, to shed light on the secondary phytotoxic metabolite panels produced by pathogenic isolates of Colletotrichum truncatum and Colletotrichum trifolii. The phytotoxicity of the fungal crude extracts was also assessed on their primary hosts and related legumes, and the results correlated with the metabolite profile that arose from the different cultural conditions. To the best of our knowledge, this is the first time that the OSMAC strategy integrated with metabolomics approaches has been applied to Colletotrichum species involved in legume diseases.
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