Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i>
Ochratoxin A (OTA) usually contaminates agricultural products such as grapes, oatmeal, coffee and spices. Light was reported as an effective strategy to control spoilage fungi and mycotoxins. This research investigated the effects of light with different wavelengths on the growth and the production...
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| Médium: | Článek |
| Jazyk: | English |
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MDPI AG
2021-03-01
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| Edice: | Toxins |
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| On-line přístup: | https://www.mdpi.com/2072-6651/13/4/251 |
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| author | Haiyong Zhang Gang Wang Qingli Yang Xu Yang Yongquan Zheng Yang Liu Fuguo Xing |
| author_facet | Haiyong Zhang Gang Wang Qingli Yang Xu Yang Yongquan Zheng Yang Liu Fuguo Xing |
| author_sort | Haiyong Zhang |
| collection | DOAJ |
| description | Ochratoxin A (OTA) usually contaminates agricultural products such as grapes, oatmeal, coffee and spices. Light was reported as an effective strategy to control spoilage fungi and mycotoxins. This research investigated the effects of light with different wavelengths on the growth and the production of OTA in <i>Aspergillus ochraceus</i> and <i>Aspergillus carbonarius</i>. The results showed that the growth of both fungi were extremely inhibited by UV-B. Short-wavelength (blue, violet) significantly inhibited the production of OTA in both fungi, while the inhibitory effect of white was only demonstrated on <i>A. ochraceus</i>. These results were supported by the expression profiles of OTA biosynthetic genes of <i>A. ochraceus</i> and <i>A. carbonarius</i>. To clarify, the decrease in OTA production is induced by inhibition or degradation; therefore, the degradation of OTA under different wavelengths of light was tested. Under UV-B, the degradation rate of 10 μg/mL OTA standard pure-solution samples could reach 96.50% in 15 days, and the degradation effect of blue light was relatively weak. Furthermore, infection experiments of pears showed that the pathogenicity of both fungi was significantly decreased under UV-B radiation. Thus, these results suggested that light could be used as a potential target for strategies in the prevention and control of ochratoxigenic fungi. |
| first_indexed | 2024-03-10T12:44:15Z |
| format | Article |
| id | doaj.art-339facac901b48aeb3f9ad0281409e90 |
| institution | Directory Open Access Journal |
| issn | 2072-6651 |
| language | English |
| last_indexed | 2024-03-10T12:44:15Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxins |
| spelling | doaj.art-339facac901b48aeb3f9ad0281409e902023-11-21T13:35:09ZengMDPI AGToxins2072-66512021-03-0113425110.3390/toxins13040251Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i>Haiyong Zhang0Gang Wang1Qingli Yang2Xu Yang3Yongquan Zheng4Yang Liu5Fuguo Xing6College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, ChinaKey Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaCollege of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, ChinaCollege of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, ChinaState Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaKey Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaKey Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaOchratoxin A (OTA) usually contaminates agricultural products such as grapes, oatmeal, coffee and spices. Light was reported as an effective strategy to control spoilage fungi and mycotoxins. This research investigated the effects of light with different wavelengths on the growth and the production of OTA in <i>Aspergillus ochraceus</i> and <i>Aspergillus carbonarius</i>. The results showed that the growth of both fungi were extremely inhibited by UV-B. Short-wavelength (blue, violet) significantly inhibited the production of OTA in both fungi, while the inhibitory effect of white was only demonstrated on <i>A. ochraceus</i>. These results were supported by the expression profiles of OTA biosynthetic genes of <i>A. ochraceus</i> and <i>A. carbonarius</i>. To clarify, the decrease in OTA production is induced by inhibition or degradation; therefore, the degradation of OTA under different wavelengths of light was tested. Under UV-B, the degradation rate of 10 μg/mL OTA standard pure-solution samples could reach 96.50% in 15 days, and the degradation effect of blue light was relatively weak. Furthermore, infection experiments of pears showed that the pathogenicity of both fungi was significantly decreased under UV-B radiation. Thus, these results suggested that light could be used as a potential target for strategies in the prevention and control of ochratoxigenic fungi.https://www.mdpi.com/2072-6651/13/4/251<i>Aspergillus ochraceus</i><i>Aspergillus carbonarius</i>lightOTAOTA biosynthesis genes |
| spellingShingle | Haiyong Zhang Gang Wang Qingli Yang Xu Yang Yongquan Zheng Yang Liu Fuguo Xing Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i> Toxins <i>Aspergillus ochraceus</i> <i>Aspergillus carbonarius</i> light OTA OTA biosynthesis genes |
| title | Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i> |
| title_full | Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i> |
| title_fullStr | Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i> |
| title_full_unstemmed | Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i> |
| title_short | Effects of Light on the Ochratoxigenic Fungi <i>Aspergillus ochraceus</i> and <i>A. carbonarius</i> |
| title_sort | effects of light on the ochratoxigenic fungi i aspergillus ochraceus i and i a carbonarius i |
| topic | <i>Aspergillus ochraceus</i> <i>Aspergillus carbonarius</i> light OTA OTA biosynthesis genes |
| url | https://www.mdpi.com/2072-6651/13/4/251 |
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