Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em>
This investigated the roles of water activity (aw) and fungicides on the competitiveness of two Fusarium verticillioides strains against other spoilage fungi commonly present in maize (F. proliferatum, Aspergillus niger, A. flavus, A. ochraceus and Penicillium verrucosum). Fungal strains were inocul...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Firenze University Press
2014-12-01
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| Series: | Phytopathologia Mediterranea |
| Subjects: | |
| Online Access: | https://oajournals.fupress.net/index.php/pm/article/view/5586 |
| _version_ | 1811270114042970112 |
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| author | Paola GIORNI Silvia FORMENTI Terenzio BERTUZZI Naresh MAGAN Paola BATTILANI |
| author_facet | Paola GIORNI Silvia FORMENTI Terenzio BERTUZZI Naresh MAGAN Paola BATTILANI |
| author_sort | Paola GIORNI |
| collection | DOAJ |
| description | This investigated the roles of water activity (aw) and fungicides on the competitiveness of two Fusarium verticillioides strains against other spoilage fungi commonly present in maize (F. proliferatum, Aspergillus niger, A. flavus, A. ochraceus and Penicillium verrucosum). Fungal strains were inoculated on artificial media containing maize flour. The effects were determined of three aw levels (0.99, 0.98 and 0.95) and three fungicides (tebuconazole, procloraz and prothioconazole) on fungal interactions, the Index of Dominance (ID) of isolates and fumonisin B1+B2 (FBs) production. The two strains of F. verticillioides showed similar behaviour in conditions where water was freely available (0.99 aw); at 0.98 and 0.95 aw both F. verticilliodes strains had the lowest total ID scores (8–6 and 10–12, respectively). They showed the same ability to compete against other fungi having the highest ID scores against P. verrucosum and A. ochraceus and the lowest against A. niger and A. flavus. The lowest water activity gave (0.95 aw) was the most conducive for fumonisin production with significant differences to 0.98 and 0.99 aw. In a co-inoculation experiment, only FBs production from P. verrucosum was greater in the presence of the F. verticilliodes strains other fungi. The use of fungicides reduced Indices of Dominancy (ID) for both F. verticilliodes strains. A significant reduction in F. verticilloides growth was observed when combining water stress and fungicide treatments. This information provides increased understanding of the colonisation patterns of F. verticillioides in relation to other mycobiota and to both environmental and chemical stresses, and has implications in relation to future climate change scenarios. |
| first_indexed | 2024-04-12T21:55:02Z |
| format | Article |
| id | doaj.art-6fc64410d58541288b3a924756caebc3 |
| institution | Directory Open Access Journal |
| issn | 0031-9465 1593-2095 |
| language | English |
| last_indexed | 2024-04-12T21:55:02Z |
| publishDate | 2014-12-01 |
| publisher | Firenze University Press |
| record_format | Article |
| series | Phytopathologia Mediterranea |
| spelling | doaj.art-6fc64410d58541288b3a924756caebc32022-12-22T03:15:21ZengFirenze University PressPhytopathologia Mediterranea0031-94651593-20952014-12-0153310.14601/Phytopathol_Mediterr-1393212870Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em>Paola GIORNISilvia FORMENTITerenzio BERTUZZINaresh MAGANPaola BATTILANI0University of PiacenzaThis investigated the roles of water activity (aw) and fungicides on the competitiveness of two Fusarium verticillioides strains against other spoilage fungi commonly present in maize (F. proliferatum, Aspergillus niger, A. flavus, A. ochraceus and Penicillium verrucosum). Fungal strains were inoculated on artificial media containing maize flour. The effects were determined of three aw levels (0.99, 0.98 and 0.95) and three fungicides (tebuconazole, procloraz and prothioconazole) on fungal interactions, the Index of Dominance (ID) of isolates and fumonisin B1+B2 (FBs) production. The two strains of F. verticillioides showed similar behaviour in conditions where water was freely available (0.99 aw); at 0.98 and 0.95 aw both F. verticilliodes strains had the lowest total ID scores (8–6 and 10–12, respectively). They showed the same ability to compete against other fungi having the highest ID scores against P. verrucosum and A. ochraceus and the lowest against A. niger and A. flavus. The lowest water activity gave (0.95 aw) was the most conducive for fumonisin production with significant differences to 0.98 and 0.99 aw. In a co-inoculation experiment, only FBs production from P. verrucosum was greater in the presence of the F. verticilliodes strains other fungi. The use of fungicides reduced Indices of Dominancy (ID) for both F. verticilliodes strains. A significant reduction in F. verticilloides growth was observed when combining water stress and fungicide treatments. This information provides increased understanding of the colonisation patterns of F. verticillioides in relation to other mycobiota and to both environmental and chemical stresses, and has implications in relation to future climate change scenarios.https://oajournals.fupress.net/index.php/pm/article/view/5586fungicideswater activitycompetition |
| spellingShingle | Paola GIORNI Silvia FORMENTI Terenzio BERTUZZI Naresh MAGAN Paola BATTILANI Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em> Phytopathologia Mediterranea fungicides water activity competition |
| title | Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em> |
| title_full | Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em> |
| title_fullStr | Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em> |
| title_full_unstemmed | Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em> |
| title_short | Influence of water activity and anti-fungal compounds on development and competitiveness of <em>Fusarium verticillioides</em> |
| title_sort | influence of water activity and anti fungal compounds on development and competitiveness of em fusarium verticillioides em |
| topic | fungicides water activity competition |
| url | https://oajournals.fupress.net/index.php/pm/article/view/5586 |
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