生物学杂志

生物学杂志 ›› 2024, Vol. 41 ›› Issue (3): 11-.doi: 10.3969/j.issn.2095-1736.2024.03.011

• 生物冶金专题 • 上一篇    下一篇

黄色黏球菌/铜绿假单胞菌-离子型稀土矿相互作用比较研究

王梦园1， 黄诗云1， 刘红昌1,2， 刘　洋1,2， 李京娜1， 聂珍媛1,2， 夏金兰1,2， 王　军1,2   

  1. 1. 中南大学 资源加工与生物工程学院, 长沙 410083；
    2. 中南大学 生物冶金教育部重点实验室， 长沙 410083
  • 出版日期:2024-06-18 发布日期:2024-06-17
  • 通讯作者: 刘红昌，博士，副教授，研究方向为资源、能源和环境微生物技术，E-mail:hchliu2050@csu.edu.cn
  • 作者简介:王梦园，硕士研究生，研究方向为稀土生物冶金，E-mail:mengyuanwang@csu.edu.cn
  • 基金资助:
    国家重点研发计划项目（2022YFC2105300）

Comparative study on interactions between Myxococcus xanthus/Pseudomonas aeruginosa and ionic rare earth minerals #br#

WANG Mengyuan1, HUANG Shiyun1, LIU Hongchang1,2, LIU Yang1,2, LI Jingna1,#br# NIE Zhenyuan1,2, XIA Jinlan1,2, WANG Jun1,2   

  1. 1. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;
    2. Key Lab of Biometallurgy of Ministry of Education of China, Central South University, Changsha 410083, China
  • Online:2024-06-18 Published:2024-06-17

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摘要： 以稀土矿区环境中常见的黄色黏球菌和铜绿假单胞菌为对象，比较研究这两种细菌及其发酵液与离子型稀土矿相互作用过程中的溶液行为；利用扫描电子显微镜、透射电子显微镜、X射线衍射和傅里叶红外光谱等手段分析作用前后细胞和矿物相的形态、结构、稀土元素分布和官能团变化。结果表明，黄色黏球菌、铜绿假单胞菌对稀土矿物作用过程具有一定差异性，在溶浸稀土矿过程中，铜绿假单胞菌直接作用体系相比发酵液间接作用体系溶浸稀土离子效果更好，而黄色黏球菌直接作用体系弱于发酵液间接作用体系。此外，稀土矿物的存在可以促进黄色黏球菌脂质和蛋白组分的分泌，抑制其多糖组分的分泌，而对铜绿假单胞菌，稀土矿物的存在对脂质和蛋白组分分泌影响较小，但促进了多糖组分的分泌。

关键词: 离子型稀土矿, 黄色黏球菌, 铜绿假单胞菌, 矿物表征, 微生物-矿物相互作用

Abstract: In this paper,Myxococcus xanthusandPseudomonas aeruginosa, which are common in the rare earth mining environment, were prepared, and the solution behaviors of the two bacteria and their fermentation broth during the interaction with ion-type rare earth ore were comparatively studied. The morphology, structure, distribution of rare earth elements and functional groups of the cells and mineral phases were analyzed by means of scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Fourier infrared spectroscopy. The results showed that there were some differences in the interaction processes of theM. xanthusandP. aeruginosaon rare earth minerals. In the leaching process of rare earth minerals, the direct-action system ofP. aeruginosawas better than that of the indirect-action system of the fermentation broth, while the direct-action system of theM. xanthuswas weaker than that of the indirect action system of the fermentation liquid. In addition, the presence of rare earth minerals can promote the secretion of lipid and protein components ofM. xanthusand inhibit the secretion of polysaccharide components, while forP. aeruginosa, the presence of rare earth minerals has little effect on the secretion of lipid and protein components but promotes the secretion of polysaccharide components.

Key words: ionic rare earth ore;Myxococcus xanthus;Pseudomonas aeruginosa, mineral characterization；microbial-mineral interaction

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