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Open AccessArticle

Species Composition and Toxigenic Potential of Fusarium Isolates Causing Fruit Rot of Sweet Pepper in China

1
Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, 1000 Jinqi Road, Shanghai 201403, China
2
SIBS-UGENT-SJTU Joint Laboratory of Mycotoxin Research, CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200000, China
3
Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
4
Mycothèque de l’UCL catholique de Louvain (BCCMTM/MUCL), Applied Microbiology (ELIM), Earth and Life Institute (ELI), Université catholique de Louvain (UCL), Louvain-la-Neuve B-1348, Belgium
*
Author to whom correspondence should be addressed.
Toxins 2019, 11(12), 690; https://doi.org/10.3390/toxins11120690
Received: 28 October 2019 / Revised: 16 November 2019 / Accepted: 21 November 2019 / Published: 24 November 2019
(This article belongs to the Special Issue Mycotoxins in Feed and Food Chain: Present Status and Future Concerns)
Apart from causing serious yield losses, various kinds of mycotoxins may be accumulated in plant tissues infected by Fusarium strains. Fusarium mycotoxin contamination is one of the most important concerns in the food safety field nowadays. However, limited information on the causal agents, etiology, and mycotoxin production of this disease is available on pepper in China. This research was conducted to identify the Fusarium species causing pepper fruit rot and analyze their toxigenic potential in China. Forty-two Fusarium strains obtained from diseased pepper from six provinces were identified as F. equiseti (27 strains), F. solani (10 strains), F. fujikuroi (five strains). This is the first report of F. equiseti, F. solani and F. fujikuroi associated with pepper fruit rot in China, which revealed that the population structure of Fusarium species in this study was quite different from those surveyed in other countries, such as Canada and Belgium. The mycotoxin production capabilities were assessed using a well-established liquid chromatography mass spectrometry method. Out of the thirty-six target mycotoxins, fumonisins B1 and B2, fusaric acid, beauvericin, moniliformin, and nivalenol were detected in pepper tissues. Furthermore, some mycotoxins were found in non-colonized parts of sweet pepper fruit, implying migration from colonized to non-colonized parts of pepper tissues, which implied the risk of mycotoxin contamination in non-infected parts of food products.
Keywords: Fusarium species; mycotoxin; toxigenic profile; mycotoxin migration; sweet pepper; fungal disease Fusarium species; mycotoxin; toxigenic profile; mycotoxin migration; sweet pepper; fungal disease
MDPI and ACS Style

Wang, J.; Wang, S.; Zhao, Z.; Lin, S.; Van Hove, F.; Wu, A. Species Composition and Toxigenic Potential of Fusarium Isolates Causing Fruit Rot of Sweet Pepper in China. Toxins 2019, 11, 690.

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