Melons are perishable fruit of high food safety risk, grown in contact with soil and soil-borne organisms. To assess whether food safety risk could be augmented by the presence of soil-borne fungi, this study investigated the relationship between Fusarium spp. that were isolated from the surface of melon and the foodborne pathogen Salmonella enterica. In four repeated trials, rind discs from cultivars, Arava, Athena, Dulce Nectar, Jaune de Canaries, and Sivan fruit, grown in the field and in high tunnels in Maryland were inoculated separately with Fusarium isolates, F. oxysporum, F. fujikuroi, F. armeniacum, and F. proliferatum, with no Fusarium inoculation serving as a control and incubated at 25°C. Salmonella Newport was inoculated onto melon discs 4 d post-Fusarium inoculation and recovered 24 h later. Melon cultivar impacted the retrieval of Salmonella Newport. In all four replicated experiments, one or more of the netted varieties, Arava, Athena, and Sivan, yielded higher Salmonella Newport counts than one or both smooth-rind melons, Jaune de Canaries and Dulce Nectar (p < 0.05). Fusarium inoculation did not have a marked impact on Salmonella retrieval. The average Salmonella count recovered was 5.0 log colony-forming unit (CFU)/mL for both Fusarium-inoculated and uninoculated melons. However, in one trial, Salmonella Newport counts recovered from F. fujikuroi-inoculated melons were higher than all other treatments (8.6 log CFU/mL; p < 0.001), due to high levels of Salmonella recovered from Jaune de Canaries compared with other experiments. The food safety risk of melon did not appear to be enhanced by postharvest colonization with saprophytic Fusarium spp. However, melons with netted rinds appeared to favor Salmonella colonization compared with smooth melons. Choice of melon cultivar may be an important consideration in reducing Salmonella colonization risk in areas where Salmonella may be endemic in the environment.

中文翻译：

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纽波特沙门氏菌，镰刀菌属和甜瓜品种之间的相互作用。

甜瓜是易腐烂的水果，具有很高的食品安全风险，与土壤和土壤传播的生物接触后会生长。为了评估土壤传播真菌的存在是否可以增加食品安全风险，本研究调查了镰刀菌属之间的关系。从甜瓜和食源性病原体肠沙门氏菌中分离出来的。四次反复试验，从品种，阿拉瓦，雅典娜，杜尔塞花蜜，云庭去加那利群岛和斯万的水果，在田间种植果皮盘，并在马里兰州隧道高分别接种镰刀菌菌株，˚F。枯萎病，˚F。恶苗病，˚F。亚美尼亚和F. proliferatum，不接种镰刀菌作为对照，并在25°C下孵育。镰刀菌接种后4天，将沙门氏菌Newport接种到瓜圆盘上，并在24小时后恢复。甜瓜品种影响了纽波特沙门氏菌的获取。在所有四个重复的实验中，网状变种Arava，Athena和Sivan产生的沙门氏菌Newport计数高于光滑皮瓜，Jaune de Canaries和Dulce Nectar中的一种或两种（p  <0.05）。镰刀菌接种对沙门氏菌回收没有显着影响。平均沙门氏菌对于镰刀菌接种和未接种的瓜，回收的计数均为5.0 log集落形成单位（CFU）/ mL 。但是，在一项试验中， 由于从Jaune de Canaries回收的沙门氏菌水平较高，从F.fujikuroi接种的哈密瓜中检出的沙门氏菌Newport计数高于所有其他处理方法（8.6 log CFU / mL；p <0.001）。。腐生腐霉镰刀菌的收获后定植似乎并未增加甜瓜的食品安全风险。然而，带有网状果皮的甜瓜似乎更有利于沙门氏菌。与光滑瓜的定植相比。在环境中沙门氏菌可能流行的地区，选择甜瓜品种可能是降低沙门氏菌定植风险的重要考虑因素。