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外来新兴水生植物比一个本土的水下物种更好地对西普罗夫洛克萨产生耐受性和代谢能力

Pei Fan¹, Haihao Yu¹, Tian Lv¹

¹The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China.

The Science of the total environment

|May 8, 2024

概括

外来水生植物显示出比本地物种更大的适应能力和西普洛素 (CIPR) 降解. 侵入性巨植物,如艾希霍尼亚和Myriophyllum aquaticum有效地积累和代谢CIPR,与本地Vallisneria natans不同.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
植物生物学植物生物学

背景情况:

抗生素污染和生物入侵威胁淡水生态系统.
有限的研究比较了外来和本地巨细胞对西普洛素 (CIPR) 的反应.

研究的目的:

评估两个外来巨型植物 (Eichhornia crassipes,Myriophyllum aquaticum) 和一个本地巨型植物 (Vallisneria natans) 的生态适应性和CIPR降解能力.
评估CIPR对植物生长,生理学及其在这些物种中的积累,转移和新陈代谢的影响.

主要方法:

对E. crassipes,M. aquaticum和V. natans暴露于CIPR (0,1,10 mg/L) 的不同度.
测量植物生长参数,光合作用效率 (例如Fv/Fm) 和CIPR含量 (积累,转移,代谢).
对CIPR代谢途径的分析,重点关注皮佩拉环和代谢物分布.

主要成果:

与本地V. natans相比,外来物种 (E. crassipes,M. aquaticum) 对CIPR的耐受性更高,没有显著的生长抑制.
在高CIPR水平下,M. aquaticum没有显示光合作用损害,而E. crassipes和V. natans在高CIPR水平下,光合作用效率降低.
所有物种都积累和代谢了CIPR,外来物种显示出更大的积累和代谢分解,特别是M. aquaticum.

结论:

与本地物种相比,外来巨型植物具有更好的生态适应性和CIPR代谢能力.
侵入性物种可能利用富含抗生素的环境来成功入侵.
抗生素污染和入侵物种的相互作用对天然淡水巨型植物和生态系统构成重大风险.

关键词:

积累积累是一种积累.外来物种外来物种外来物种水生植物水生植物.齐普罗夫洛克萨辛的使用方法降解机制的降解机制

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