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对春尾虫 (Folsomia candida) 的转录组分析显示,在石油碳化合物暴露期间,能量约束和氧化应激
Adrian Pang1, Allison Rutter1, Elizabeth Haack2
1School of Environmental Studies, Queen's University, Kingston, ON, K7L 3N6, Canada.
Chemosphere
|September 16, 2023
概括
石油碳化合物污染会影响土壤中的生物,比如虫虫. 基因表达分析揭示了分子反应,包括排毒和能量代谢变化,与减少生殖有关. 这为污染土壤提供了更快的选方法.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 分子生物学分子生物学
背景情况:
- 石油碳化合物 (PHC) 土壤污染是普遍存在的,对生物体构成风险.
- 由于复杂的混合物和气候变化,评估PHC的毒性具有挑战性.
- 快速评估土壤污染需要高通量方法.
研究的目的:
- 为了研究PHCs对Folsomia candida繁殖和基因表达的影响.
- 在F. candida.中识别PHC暴露的分子生物标志物.
- 评估转录组学作为PHC污染土壤高通量选工具的潜力.
主要方法:
- 常规的毒性测试,以确定F. candida的生殖EC25和EC50值,暴露在含原油的土壤中.
- RNA测序 (RNA-seq) 用于分析F. candida在7天暴露期间的基因表达变化.
- 对与异生代谢,氧化应激和碳水化合物/代谢相关的差异表达基因的分析.
主要成果:
- 暴露于PHC显著影响了F. candida的繁殖 (确定EC25和EC50值).
- RNA-seq分别在EC25和EC50组中分别发现了98个和132个差异表达的基因.
- 上调的基因与异生生物转化和氧化应激有关;下调的基因涉及碳水化合物/代谢;促进了酸通路.
结论:
- 在PHC暴露下减少F. candida的繁殖可能是由于排毒过程中能量耗尽,抑制碳水化合物代谢.
- 转录组分析提供了对F. candida.原油分子反应的洞察力.
- 基因表达的变化可以作为PHC污染的早期指标 (24小时),为传统的毒性测试提供更快的替代方案.
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