Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i>
Ambient pH, an important environmental factor, affects the growth, pathogenicity, and mycotoxin production of pathogenic fungus. <i>Fusarium sulphureum</i> is one of the predominant causal agents causing fusarium rot of muskmelon. In this study, we investigated the effects of ambient pH...
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MDPI AG
2024-11-01
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| Series: | Journal of Fungi |
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| Online Access: | https://www.mdpi.com/2309-608X/10/11/765 |
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| author | Qili Liu Lan Yang Huali Xue Yang Bi Qianqian Zhang Yuanyuan Zong Xiao Li |
| author_facet | Qili Liu Lan Yang Huali Xue Yang Bi Qianqian Zhang Yuanyuan Zong Xiao Li |
| author_sort | Qili Liu |
| collection | DOAJ |
| description | Ambient pH, an important environmental factor, affects the growth, pathogenicity, and mycotoxin production of pathogenic fungus. <i>Fusarium sulphureum</i> is one of the predominant causal agents causing fusarium rot of muskmelon. In this study, we investigated the effects of ambient pH on fusarium rot development and diacetoxyscirpenol (DAS) accumulation in muskmelon infected with <i>F. sulphureum</i>, then analyzed the possible mechanisms in vitro and in vivo. The results suggested that ambient pH 6 was more conducive to the growth, pathogenicity, and mycotoxin production of <i>F. sulphureum</i> in vitro. Ambient pH 6 was also more favorable for secretion of cell wall-degrading enzymes for the pathogen to degrade the cell wall of the host plant and up-regulated the relative expression of genes involved in DAS biosynthesis, thus aggravating fruit disease and DAS accumulation. However, when the pH of the inoculated spore suspension was too acidic or too alkaline, the opposite results were observed. |
| format | Article |
| id | doaj-art-24f8ce83357146a1b4b29b0838e7f7dd |
| institution | DOAJ |
| issn | 2309-608X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Journal of Fungi |
| spelling | doaj-art-24f8ce83357146a1b4b29b0838e7f7dd2025-08-20T02:47:58ZengMDPI AGJournal of Fungi2309-608X2024-11-01101176510.3390/jof10110765Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i>Qili Liu0Lan Yang1Huali Xue2Yang Bi3Qianqian Zhang4Yuanyuan Zong5Xiao Li6College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Science, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Science, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Science, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Science, Gansu Agricultural University, Lanzhou 730070, ChinaAmbient pH, an important environmental factor, affects the growth, pathogenicity, and mycotoxin production of pathogenic fungus. <i>Fusarium sulphureum</i> is one of the predominant causal agents causing fusarium rot of muskmelon. In this study, we investigated the effects of ambient pH on fusarium rot development and diacetoxyscirpenol (DAS) accumulation in muskmelon infected with <i>F. sulphureum</i>, then analyzed the possible mechanisms in vitro and in vivo. The results suggested that ambient pH 6 was more conducive to the growth, pathogenicity, and mycotoxin production of <i>F. sulphureum</i> in vitro. Ambient pH 6 was also more favorable for secretion of cell wall-degrading enzymes for the pathogen to degrade the cell wall of the host plant and up-regulated the relative expression of genes involved in DAS biosynthesis, thus aggravating fruit disease and DAS accumulation. However, when the pH of the inoculated spore suspension was too acidic or too alkaline, the opposite results were observed.https://www.mdpi.com/2309-608X/10/11/765<i>Fusarium sulphureum</i>muskmelon fruitpathogenicitymycotoxincell wall-degrading enzymes |
| spellingShingle | Qili Liu Lan Yang Huali Xue Yang Bi Qianqian Zhang Yuanyuan Zong Xiao Li Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i> Journal of Fungi <i>Fusarium sulphureum</i> muskmelon fruit pathogenicity mycotoxin cell wall-degrading enzymes |
| title | Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i> |
| title_full | Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i> |
| title_fullStr | Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i> |
| title_full_unstemmed | Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i> |
| title_short | Effects of Ambient pH on the Growth and Development, Pathogenicity, and Diacetoxyscirpenol Accumulation of Muskmelon Fruit Caused by <i>Fusarium sulphureum</i> |
| title_sort | effects of ambient ph on the growth and development pathogenicity and diacetoxyscirpenol accumulation of muskmelon fruit caused by i fusarium sulphureum i |
| topic | <i>Fusarium sulphureum</i> muskmelon fruit pathogenicity mycotoxin cell wall-degrading enzymes |
| url | https://www.mdpi.com/2309-608X/10/11/765 |
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