Related Experiment Videos
Bacterial Accumulation of Metallic Compounds
I Sakurai1, Y Kawamura, H Koike
1Biophysics Laboratory, Solar Energy Group, and Japan Collection of Microorganisms, The Institute of Physical and Chemical Research, Wako, Saitama 351-01, and Applied Research Center, JEOL Co. Ltd., Akishima, Tokyo 196, Japan.
Applied and Environmental Microbiology
|August 1, 1990
Summary
Xanthomonas maltophilia bacteria accumulate metal compounds within cells. These particles, mainly zinc and phosphorus, form in an amorphous state, resembling an electrolyte solution.
Area of Science:
- Microbiology
- Biogeochemistry
- Materials Science
Background:
- Xanthomonas maltophilia is a bacterium known for its metabolic versatility.
- Intracellular accumulation of metals can influence microbial physiology and environmental interactions.
- Understanding metal sequestration mechanisms is crucial for bioremediation and biomining.
Purpose of the Study:
- To investigate the nature and composition of intracellular metal accumulations in Xanthomonas maltophilia.
- To characterize the physical state and morphology of these metallic deposits.
- To elucidate the potential implications of these accumulations for cellular function.
Main Methods:
- Microscopic examination of Xanthomonas maltophilia cells.
- Elemental analysis of intracellular particles.
- Characterization of particle morphology and state.
Main Results:
- Xanthomonas maltophilia forms intracellular particles containing metals or metallic compounds.
- These particles are composed of numerous small granules.
- The granules are primarily assumed to be an amorphous compound of zinc and phosphorus.
Conclusions:
- Xanthomonas maltophilia sequesters metals intracellularly in a unique particulate form.
- The observed amorphous zinc-phosphorus granules suggest a novel biomineralization process.
- This accumulation mechanism may play a role in metal tolerance or cellular homeostasis.