解决克拉米多马纳斯 (Chlamydomonas reinhardtii) 的选择,以促进沙马的吸收
Paloma Martinez-Alesón García1,2, Camino García-Balboa2, Victoria López-Rodas2
1Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, University San Pablo CEU, Madrid, Spain.
Journal of phycology
|May 13, 2024
概括
使用 Chlamydomonas reinhardtii 的微生物生物修复增强了 (Sm) 的吸收. 定居选择提高了每细胞41%的Sm封存,并使生物质的吸收增加了一倍,提供了一种可持续的回收方法.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- (Sm) 是一个重要的稀土元素,需求日益增加.
- 微生物生物修复为Sm的去除和回收提供了一个可持续的替代方案.
- 此前已经确定了耐受Sm和酸性条件的Chlamydomonas reinhardtii菌株.
研究的目的:
- 通过沉选择,提高 Chlamydomonas reinhardtii 中的 (Sm) 吸收性能.
- 调查选定微藻菌株的表型变化和Sm封存能力.
- 评估用于稀土金属生物积累的实验室选择的潜力.
主要方法:
- 使用了一种先前选择的SM耐受性Chllamydomonas reinhardtii菌株.
- 在多个循环中应用沉选择,以改善Sm的吸收.
- 使用TEM-EDX分析了细胞表型,每个细胞和生物质中的Sm含量,以及细胞内定位.
主要成果:
- 定居选择迅速改变了细胞表型,减少了大小并增加了圆形性.
- 衍生的CSm4菌株显示,每细胞的Sm封存量增加了41%,湿生物质中的Sm吸收量翻了一番.
- 在TEM-EDX中,Sm的细胞内生物积累主要发生在酸体或自真空附近,并观察到更强的生物吸收反应.
- 在Sm的存在下,人们注意到光合作用抑制和健身效应.
结论:
- 现型选择,特别是沉选择,显著增强了微藻中的Sm生物积累和生物吸收.
- 微藻的实验室选择是一种有前途的生物技术方法,用于稀土金属回收.
- 需要进一步的研究,以减轻Sm对微藻健康和光合作用的负面影响.
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