Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, 1000 Jinqi Road, Shanghai 201403, China.
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.
Toxins (Basel). 2019 Nov 24;11(12):690. doi: 10.3390/toxins11120690.
Apart from causing serious yield losses, various kinds of mycotoxins may be accumulated in plant tissues infected by 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 species causing pepper fruit rot and analyze their toxigenic potential in China. Forty-two strains obtained from diseased pepper from six provinces were identified as (27 strains), (10 strains), (five strains). This is the first report of , and associated with pepper fruit rot in China, which revealed that the population structure of 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 B and B, 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.
除了造成严重的产量损失外，受菌株感染的植物组织中可能会积累各种霉菌毒素。黄曲霉毒素污染是当今食品安全领域最关注的问题之一。然而，关于中国辣椒上这种病害的病原菌、病因和霉菌毒素产生的信息有限。本研究旨在鉴定引起辣椒果实腐烂的病原菌，并分析其在中国的产毒潜力。从中国六个省份的患病辣椒中分离得到的 42 株病原菌被鉴定为 （27 株）、 （10 株）、 （5 株）。这是首次报道在中国与辣椒果实腐烂有关的 、 和 ，表明本研究中 种的种群结构与在加拿大和比利时等其他国家调查的种群结构有很大不同。采用成熟的液相色谱-质谱法评估了产毒能力。在所检测的 36 种目标霉菌毒素中，在辣椒组织中检测到了伏马菌素 B 和 B、伏马酸、棒曲霉素、单端孢霉烯族化合物和雪腐镰刀菌烯醇。此外，在甜椒果实的非侵染部位也发现了一些霉菌毒素，这表明霉菌毒素从侵染部位迁移到非侵染部位，这意味着食品非侵染部位存在霉菌毒素污染的风险。
