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dc.contributor.authorOn Uma Ruangwongen_US
dc.contributor.authorChaninun Pornsuriyaen_US
dc.contributor.authorKitsada Pitijaen_US
dc.contributor.authorAnurag Sunpapaoen_US
dc.date.accessioned2022-10-16T06:58:03Z-
dc.date.available2022-10-16T06:58:03Z-
dc.date.issued2021-04-01en_US
dc.identifier.issn2309608Xen_US
dc.identifier.other2-s2.0-85104840632en_US
dc.identifier.other10.3390/jof7040276en_US
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85104840632&origin=inwarden_US
dc.identifier.urihttp://cmuir.cmu.ac.th/jspui/handle/6653943832/75283-
dc.description.abstractSeveral mechanisms are involved in the biological control of plant pathogens by the soilborne Trichoderma spp. fungi. The aim of this study was to characterize a new strain of Trichoderma as a potential biological control agent to control the postharvest anthracnose of chili pepper caused by Colletotrichum gloeosporioides. A total of nine strains of Trichoderma spp. were screened for their antifungal activity using a dual culture assay against C. gloeosporioides. Trichoderma koningiopsis PSU3-2 was shown to be the most effective strain, with a percentage inhibition of 79.57%, which was significantly higher than that of other strains (p < 0.05). In the sealed plate method, T. koningiopsis PSU3-2 suppressed the growth of C. gloeosporioides by 38.33%. Solid-phase microextraction (SPME) was applied to trap volatiles emitted by T. koningiopsis PSU3-2, and the GC/MS profiling revealed the presence of antifungal compounds including azetidine, 2-phenylethanol, and ethyl hexadecanoate. The production of cell-wall-degrading enzymes (CWDEs) was assayed through cell-free culture filtrate (CF) of PSU3-2, and the enzyme activity of chitinase and β-1,3-glucanase was 0.06 and 0.23 U/mL, respectively, significantly higher than that in the control (p < 0.05). Scanning electron microscopy of the mycelium incubated in cell-free CF of T. koningiopsis PSU3-2 showed the abnormal shape of C. gloeosporioides hyphae. Application of T. koningiopsis PSU3-2 by the dipping method significantly reduced the lesion size (p < 0.05) after inoculation with C. gloeosporioides compared to the control, and there was no disease symptom development in T. koningiopsis PSU3-2-treated chili pepper. This study demonstrates that T. koningiopsis PSU3-2 is an effective antagonistic microorganism and a promising biocontrol agent against postharvest anthracnose of chili pepper, acting with multiple mechanisms.en_US
dc.subjectAgricultural and Biological Sciencesen_US
dc.subjectMedicineen_US
dc.titleBiocontrol mechanisms of Trichoderma koningiopsis PSU3-2 against postharvest anthracnose of chili pepperen_US
dc.typeJournalen_US
article.title.sourcetitleJournal of Fungien_US
article.volume7en_US
article.stream.affiliationsPrince of Songkla Universityen_US
article.stream.affiliationsChiang Mai Universityen_US
article.stream.affiliationsRama 9 Rd.en_US
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