论文标题
部分可观测时空混沌系统的无模型预测
Scanning Electron Microscopy and Metabolite Measurement Revealed the Stress Mechanism of PS-COOH Microplastics on Rhodotorula mucilaginosa AN5
论文作者
论文摘要
研究人员越来越关注海洋环境中的微塑料，这些物质对海洋微生物的影响不容忽视。研究表明，PS-COOH微塑料对海洋软体动物，藻类和单子有害。这项研究探讨了微塑料（80 nm PS-COOH）对南极海洋酵母，细菌计数，扫描电子显微镜（SEM）和代谢物分析的影响和机制。结果表明，PS-COOH浓度为50 mg/L可以抑制酵母细胞的36.15％的生长，10 mg/L抑制80.20％。微塑料应力会导致某些氧化应激物质的含量变化，包括活性氧（ROS）42.86％，丙二醛（MDA）54.06％含量和抗氧化剂的活性，例如催化酶（Catalase（Cat）36.00％，peroxidase（Pod）66.6.67％和超级氧化物（Superoxase）和超级氧化物（Supersoxide）25.40％（Superoxase）25.40％。这些结果揭示了微塑料污染对海洋酵母菌的可能影响，并可能影响海洋生态系统的底层。
Microplastics in the marine environment have been paid more and more attention by researchers, and the impact of these substances on marine microorganisms can not be ignored. Studies have shown that PS-COOH Microplastics are harmful to marine molluscs, algae and monads. This study explore the effect and mechanism of microplastics (80 nm PS-COOH) on Antarctic marine yeast, Rhodotorula mucilaginosa AN5 by bacterial count, Scanning Electron Microscopy (SEM) and metabolite analysis. The results illustrates that a 50 mg/L concentration of PS-COOH could inhibit 36.15% growth of yeast cells and 10 mg/L inhibit 80.20%. Microplastics stress causes changes in the content of some oxidative stress substances, including reactive oxygen species (ROS) 42.86% , malondialdehyde (MDA) 54.06% content and the activities of antioxidant enzymes such as catalase (CAT) 36.00% , peroxidase (POD) 66.67% and superoxide dismutase (SOD) 25.40%. These results revealed the possible stress effect of microplastic pollution on marine yeast and may affect bottom layer of marine ecosystem.
