聚乙烯纳米塑料在诱微藻上的增长抑制Isochrysis galbana 基于转录组分析
Xinfeng Xiao1, Wenfang Li1, Shuangwei Li1
1College of Safety & Environmental Engineering, Shandong University of Science & Technology, Qingdao 266510, China.
Microorganisms
|June 15, 2023
概括
聚乙烯纳米塑料损害了诱微藻的生长和质量,影响了水产养殖料. 转录组和微生物分析揭示了Isochrysis galbana中纳米塑料污染的分子应激反应.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料污染在水生生态系统中越来越令人担忧.
- 微塑料对对食物链至关重要的微藻的影响尚未完全理解.
- 像Isochrysis galbana这样的诱微藻对水产养殖至关重要,并进入食物链.
研究的目的:
- 研究聚乙烯微塑料 (PE-MPs) 和纳米塑料 (PE-NPs) 对Isochrysis galbana的细胞学和生理影响.
- 通过转录组测序来理解对PE-NP反应的分子机制.
- 分析PE-NP对相关细菌社区结构的影响.
主要方法:
- 暴露于PE-MPs (10微米) 和PE-NPs (50纳米) 的Isochrysis galbana.
- 细胞学和生理学评估 (细胞生长,叶绿素,胡卜素,可溶蛋白).
- 转录组测序和微生物社区分析.
主要成果:
- PE-MPs没有显著影响,但PE-NP抑制了细胞生长,并减少了叶绿素,胡卜素和可溶蛋白.
- 转录组分析显示TCA循环和氨基酸合成的下调,以及卡尔文循环和脂肪酸代谢的上调,以响应PE-NPs.
- PE-NP显著改变了与I. galbana.相关的细菌社区结构.
结论:
- 聚乙烯纳米塑料对Isochrysis galbana的质量产生负面影响,可能会影响水产养殖料.
- 分子应激反应,包括代谢途径调整和细菌群体转移,是由PE-NP诱导的.
- 这些发现强调了减少微塑料释放的必要性,以保护水生生态系统和水产养殖.
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