| 聚苯乙烯微塑料对秀丽隐杆线虫取食偏好的影响 |
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| 引用本文： | 黄萌,程思,李嘉琪,李根,杨扬,胡锋,李辉信,武俊.聚苯乙烯微塑料对秀丽隐杆线虫取食偏好的影响[J].土壤,2022,54(1):47-54. |
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| 作者姓名： | 黄萌 程思 李嘉琪 李根 杨扬 胡锋 李辉信 武俊 |
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| 作者单位： | 南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院 |
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| 基金项目： | 国家自然科学基金(41877057,31901179)；中央高校基本科研业务费(KJQN202016)；中国博士后科学基金(2019M661861) |
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| 摘 要： | 以土壤模式动物秀丽隐杆线虫为受试对象，研究了不同粒径、不同浓度的聚苯乙烯(PS)微塑料在短期暴露和长期暴露条件下对线虫取食偏好的影响，结果显示，1、10、100 mg/L浓度下，1μm和5μm的PS微塑料短期暴露后，线虫对B. amyloliquefaciens JX1 (X1)和P. fluorescens Y1 (Y1)的取食偏好并未发生明显改变；1、10、100 mg/L浓度下，5μm的PS微塑料在长期暴露条件下能够改变线虫对X1、Y1的取食偏好且使线虫取食相关基因(cat-4、egl-4、gcy-28、daf-7、dbl-1、tir-1和tol-1)的表达显著上调；1μm、100 mg/L和5μm、100 mg/L的PS微塑料长期暴露后线虫体内氧化应激相关指标均有上调，与PS粒径大小无明显关联，提示氧化应激损伤可能并非PS微塑料长期暴露改变线虫取食偏好的直接机制。这均表明PS微塑料可以通过调控线虫取食偏好相关功能基因来对线虫的取食偏好行为产生影响。
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| 关 键 词： | 微塑料 秀丽隐杆线虫 取食偏好 |
| 收稿时间： | 2021/4/8 0:00:00 |
| 修稿时间： | 2021/5/19 0:00:00 |
Effects of Polystyrene Microplastics on Feeding Preference of C. elegans |
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| HUANG Meng,CHENG Si,LI Jiaqi,LI Gen,YANG Yang,HU Feng,LI Huixin,WU Jun.Effects of Polystyrene Microplastics on Feeding Preference of C. elegans[J].Soils,2022,54(1):47-54. |
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| Authors: | HUANG Meng CHENG Si LI Jiaqi LI Gen YANG Yang HU Feng LI Huixin WU Jun |
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| Institution: | College of Resources and Environmental Sciences,Nanjing Agricultural University,College of Resources and Environmental Sciences,Nanjing Agricultural University,College of Resources and Environmental Sciences,Nanjing Agricultural University,College of Resources and Environmental Sciences,Nanjing Agricultural University,College of Resources and Environmental Sciences,Nanjing Agricultural University,College of Resources and Environmental Sciences,Nanjing Agricultural University,College of Resources and Environmental Sciences,Nanjing Agricultural University,College of Resources and Environmental Sciences,Nanjing Agricultural University |
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| Abstract: | In this study,soil model animal C.elegans was used as test subject,and the effects of different particle sizes and concentrations of polystyrene(PS)microplastics on the feeding preferences of C.elegans under short-term and long-term exposure conditions were studied.The results showed that,the feeding preferences of C.elegans on B.amyloliquefaciens JX1(X1)and P.fluorescens Y1(Y1)did not change significantly after short-term exposure to PS microplastics of 1μm and 5μm at 1,10 and 100 mg/L;At the concentrations of 1,10 and 100 mg/L,PS microplastics of 5μm could change the feeding preferences of C.elegans on X1 and Y1,and significantly upregulated the expression of feeding related genes(cat-4,egl-4,gcy-28,daf-7,dbl-1,tir-1 and tol-1)in C.elegans under long-term exposure.The indexes related to oxidative stress in C.elegans were all upregulated after long-term exposure to PS microplastics of 1μm and 5μm at 100 mg/L,but had no significant correlation with the particle size of PS,suggesting that oxidative stress damage may not be the direct way responsible for the effect of PS microplastics on feeding preference of C.elegans.These results suggested that PS microplastics could affect the feeding preference behavior of C.elegans by regulating the functional genes related to feeding preference. |
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| Keywords: | microplastics Caenorhabditis elegans feeding preference |
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