加热加上高的pCO2调节了商业红藻Pyropia haitanensis中的微塑料抑制
Xiaolong Shi1, Yiming Ma1, Sufang Li1
1Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, China.
Marine pollution bulletin
|November 21, 2025
概括
微塑料显著损害Pyropia haitanensis的生长和生理,其影响因变暖而加剧,但因海洋酸化而减弱. 这影响了海藻水产养殖的产量和质量.
科学领域:
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
- 水产养殖科学 水产养殖科学
背景情况:
- 沿海生态系统因海洋酸化,变暖和微塑料污染而面临越来越大的压力.
- 经济上重要的海藻Pyropia haitanensis对水产养殖至关重要,但其对联合压力因素的弹性是未知的.
研究的目的:
- 研究二氧化碳 (CO2) 升高,变暖和微塑料对Pyropia haitanensis生理学的相互作用影响.
- 为了确定这些联合压力因素如何影响生长,光合作用效率,色素含量和细胞储备.
主要方法:
- 在受控条件下培养了Pyropia haitanensis thalli,其中CO2 (环境与升高),温度 (20°C与24°C) 和微塑料 (0.025到100毫克L-1) 的含量各不相同.
- 测量包括相对增长率 (RGR),光系统II的最大量子产量 (Fv/Fm),光合成色素,可溶性蛋白质和碳水化合物.
主要成果:
- 微塑料导致RGR,Fv/Fm,颜料,蛋白质和碳水化合物显著减少,取决于度.
- 高温 (24°C) 增加了色素和蛋白质含量,但降低了碳水化合物含量.
- 高温在环境CO2下加剧了微塑料的毒性,但高CO2减轻了这种影响.
结论:
- 微塑料是Pyropia haitanensis的主要压力因素,显著损害生理功能.
- 升高的二氧化碳和变暖可以调节微塑料的应激反应,但光化学效率和颜料的持续下降可能会限制受污染的沿海地区的海藻产量和营养价值.
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