Production of Alternaria Toxins in Yellow Peach (Amygdalus persica) upon Artificial Inoculation with Alternaria alternate

文献类型： 外文期刊

第一作者： Meng, Jiajia

作者： Meng, Jiajia;Guo, Wenbo;Zhao, Zhihui;Zhang, Zhiqi;Nie, Dongxia;Han, Zheng;Tangni, Emmanuel K.

作者机构：

关键词： yellow peach (Amygdalus persica); Alternaria toxins; inoculation; production

期刊名称：TOXINS （ 影响因子：4.546； 五年影响因子：4.8 ）

ISSN：

年卷期： 2021 年 13 卷 9 期

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收录情况： SCI

摘要： The yellow peach (Amygdalus persica), an important fruit in China, is highly susceptible to infection by Alternaria sp., leading to potential health risks and economic losses. In the current study, firstly, yellow peaches were artificially inoculated with Alternaria alternate. Then, the fruits were stored at 4 degrees C and 28 degrees C to simulate the current storage conditions that consumers use, and the Alternaria toxins (ATs) contents from different parts of the fruits were analyzed via ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). The results showed that the growth of A. alternate and the ATs production were dramatically affected by the storage temperature. At 28 degrees C, the fungi grew rapidly and the lesion diameter reached about 4.0 cm within 15 days of inoculation, while, at 4 degrees C, the fungal growth was noticeably inhibited, with no significant change in the lesion diameter. To our surprise, high contents of ATs were produced under both storage conditions even though the fungal growth was suppressed. With an increase in the incubation time, the amounts of ATs showed a steady tendency to increase in most cases. Remarkably, alternariol monomethyl ether (AME), alternariol (AOH), and tenuazonic acid (TeA) were detected in the rotten tissue and also in the surrounding tissue, while a large amount of TeA could also be found in the healthy tissue. To the best of our knowledge, this is the first report regarding the production of ATs by the infection of Alternaria sp. in yellow peach fruits via artificial inoculation under regulated conditions, and, based on the evidence herein, it is recommended that ATs be included in monitoring and control programs of yellow peach management and food safety administration.

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