Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases

Sweet potato is the 11th most important food crop in the world and an excellent source of nutrition. Postharvest diseases were monitored in sweet potato storage roots collected from the local markets in Korea during 2021. Several diseases including Fusarium surface and root rot, charcoal rot, dry ro...

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Autores principales:	Narayan Chandra Paul, Soyoon Park, Haifeng Liu, Ju Gyeong Lee, Gui Hwan Han, Hyunsook Kim, Hyunkyu Sang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fungal pathogens postharvest disease sweet potato storage root <i>Penicillium rotoruae</i> <i>Aspergillus wentii</i> Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/0bd83c0b164a4b0c99941a380d256c58
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spelling	oai:doaj.org-article:0bd83c0b164a4b0c99941a380d256c582021-11-25T18:05:51ZFungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases10.3390/jof71109272309-608Xhttps://doaj.org/article/0bd83c0b164a4b0c99941a380d256c582021-10-01T00:00:00Zhttps://www.mdpi.com/2309-608X/7/11/927https://doaj.org/toc/2309-608XSweet potato is the 11th most important food crop in the world and an excellent source of nutrition. Postharvest diseases were monitored in sweet potato storage roots collected from the local markets in Korea during 2021. Several diseases including Fusarium surface and root rot, charcoal rot, dry rot, and soft rot were observed in the postharvest sweet potatoes. A total of 68 fungal isolates were obtained from the diseased samples, and the isolates were grouped into 8 different fungal colony types. Based on multilocus phylogeny and morphological analysis of 17 representative isolates, the isolates were identified as <i>Fusarium oxysporum</i>, <i>F. ipomoeae</i>, <i>F. solani</i>, <i>Penicillium citrinum</i>, <i>P.</i> <i>rotoruae</i>, <i>Aspergillus</i> <i>wentii</i>, <i>Mucor</i> <i>variicolumellatus</i> (<i>Mu. circinelloides</i> species complex), and <i>Macrophomina phaseolina</i>. <i>F. oxysporum</i> was the predominant pathogen as this is the most common pathogen of sweet potato storage roots causing the surface rot disease, and <i>M. phaseolina</i> caused the most severe disease among the pathogens. Dual culture antagonistic assays were evaluated using <i>Trichoderma harzianum</i> strains CMML20–26 and CMML20–27. The results revealed that the two strains showed strong antifungal activity in different ranges against all tested pathogens. This study provides an understanding of diverse postharvest diseases in sweet potatoes and suggests potential biocontrol agents to manage the diseases. In addition, this is the first report of sweet potato storage root rot diseases caused by <i>A. wentii</i>, and <i>P. rotoruae</i> worldwide.Narayan Chandra PaulSoyoon ParkHaifeng LiuJu Gyeong LeeGui Hwan HanHyunsook KimHyunkyu SangMDPI AGarticlefungal pathogenspostharvest diseasesweet potatostorage root<i>Penicillium rotoruae</i><i>Aspergillus wentii</i>Biology (General)QH301-705.5ENJournal of Fungi, Vol 7, Iss 927, p 927 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fungal pathogens postharvest disease sweet potato storage root <i>Penicillium rotoruae</i> <i>Aspergillus wentii</i> Biology (General) QH301-705.5
spellingShingle	fungal pathogens postharvest disease sweet potato storage root <i>Penicillium rotoruae</i> <i>Aspergillus wentii</i> Biology (General) QH301-705.5 Narayan Chandra Paul Soyoon Park Haifeng Liu Ju Gyeong Lee Gui Hwan Han Hyunsook Kim Hyunkyu Sang Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases
description	Sweet potato is the 11th most important food crop in the world and an excellent source of nutrition. Postharvest diseases were monitored in sweet potato storage roots collected from the local markets in Korea during 2021. Several diseases including Fusarium surface and root rot, charcoal rot, dry rot, and soft rot were observed in the postharvest sweet potatoes. A total of 68 fungal isolates were obtained from the diseased samples, and the isolates were grouped into 8 different fungal colony types. Based on multilocus phylogeny and morphological analysis of 17 representative isolates, the isolates were identified as <i>Fusarium oxysporum</i>, <i>F. ipomoeae</i>, <i>F. solani</i>, <i>Penicillium citrinum</i>, <i>P.</i> <i>rotoruae</i>, <i>Aspergillus</i> <i>wentii</i>, <i>Mucor</i> <i>variicolumellatus</i> (<i>Mu. circinelloides</i> species complex), and <i>Macrophomina phaseolina</i>. <i>F. oxysporum</i> was the predominant pathogen as this is the most common pathogen of sweet potato storage roots causing the surface rot disease, and <i>M. phaseolina</i> caused the most severe disease among the pathogens. Dual culture antagonistic assays were evaluated using <i>Trichoderma harzianum</i> strains CMML20–26 and CMML20–27. The results revealed that the two strains showed strong antifungal activity in different ranges against all tested pathogens. This study provides an understanding of diverse postharvest diseases in sweet potatoes and suggests potential biocontrol agents to manage the diseases. In addition, this is the first report of sweet potato storage root rot diseases caused by <i>A. wentii</i>, and <i>P. rotoruae</i> worldwide.
format	article
author	Narayan Chandra Paul Soyoon Park Haifeng Liu Ju Gyeong Lee Gui Hwan Han Hyunsook Kim Hyunkyu Sang
author_facet	Narayan Chandra Paul Soyoon Park Haifeng Liu Ju Gyeong Lee Gui Hwan Han Hyunsook Kim Hyunkyu Sang
author_sort	Narayan Chandra Paul
title	Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases
title_short	Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases
title_full	Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases
title_fullStr	Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases
title_full_unstemmed	Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases
title_sort	fungi associated with postharvest diseases of sweet potato storage roots and in vitro antagonistic assay of <i>trichoderma</i> <i>harzianum</i> against the diseases
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0bd83c0b164a4b0c99941a380d256c58
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Fungi Associated with Postharvest Diseases of Sweet Potato Storage Roots and In Vitro Antagonistic Assay of <i>Trichoderma</i> <i>harzianum</i> against the Diseases

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