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Gut microbiota protects honey bees ( Apis mellifera L.) against polystyrene microplastics exposure risks

文献类型： 外文期刊

作者： Wang, Kai 1 ; Li, Jiahuan 1 ; Zhao, Liuwei 1 ; Mu, Xiyan 2 ; Wang, Chen 3 ; Wang, Miao 1 ; Xue, Xiaofeng 1 ; Qi, Suzhen 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Apicultural Res, Beijing 100093, Peoples R China

2.Chinese Acad Fishery Sci, Fishery Resource & Environm Res Ctr, Beijing, Peoples R China

3.Chinese Res Inst Environm Sci, Beijing 10012, Peoples R China

4.Fujian Agr & Forestry Univ, Coll Anim Sci, Coll Bee Sci, Fujian, Peoples R China

关键词： Polystyrene microplastics; Honey bees; Gut microbiota; Antibiotics

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

ISSN： 0304-3894

年卷期： 2021 年 402 卷

页码：

收录情况： SCI

摘要： Microplastic contamination is not only a pressing environmental concern in oceans, but also terrestrial ecosys-tems. However, little is known about its potential impacts on pollinators. Here, we reported the effects of 25 mu mdiameter spherical polystyrene microplastics (PS-MPs) alone or in combination with the antibiotic tetracycline on honey bees (Apis mellifera L.) in the laboratory. We noticed that PS-MPs exposure for 14 d had sublethal effects, with low mortalities (up to 1.6 %) across three different treatments (0.5, 5, and 50 mg/L) and no changes to the body weight gains compared to the control bees. Nevertheless, PS-MPs exposure led to significant decreases in the alpha -diversity of bees' gut microbiota accompanied by changes to the core microbial population structure. Additionally, PS-MPs lead to alterations in the expression of antioxidative (Cat), detoxification (CypQ1 and GstS3), and immune system-related genes (Domeless, Hopscotch, and Symplekin) in guts. More interestingly, we observed that PS-MPs accumulated and degraded inside of the hindgut and interacted with gut bacteria. The depletion of the normal gut microbiota using tetracycline dramatically increased the lethality of microplastics. These results provide a resource for future research on microplastic-microbiome interactions in other insects and also shed light on understanding the potential effects of microplastics in terrestrial ecosystems.

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