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Updated: May 29, 2026

Laboratory Simulation of an Iron(II)-rich Precambrian Marine Upwelling System to Explore the Growth of Photosynthetic Bacteria
Published on: July 24, 2016
Iron transport in the genus Marinobacter
Shady A Amin1, David H Green, Dhuha Al Waheeb
1Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182-1030, USA.
Marinobacter bacteria exhibit diverse iron uptake strategies, utilizing siderophores in various ways. Siderophore use is linked to their evolutionary relationships, serving as a potential marker for this marine genus.
Area of Science:
- Microbiology
- Marine Biology
- Biochemistry
Background:
- Marinobacter are motile, halophilic/halotolerant Gammaproteobacteria found globally in marine environments.
- They are associated with various marine organisms and diverse ecological niches.
Purpose of the Study:
- To investigate siderophore production and iron uptake systems in the genus Marinobacter.
- To correlate siderophore strategies with Marinobacter phylogeny and lifestyle.
Main Methods:
- Combined natural products chemistry and genomic analysis.
- Phylogenetic analysis of siderophore systems.
Main Results:
- Identified three main siderophore utilization strategies within Marinobacter: native/exogenous, native only, or exogenous only.
- All Marinobacter possess siderophore-independent FbpABC iron transport systems and cannot transport ferrous iron directly.
- Siderophore production and utilization correlate with phylogeny, acting as a chemotaxonomic marker.
Conclusions:
- Siderophore-based iron acquisition is diverse across Marinobacter, reflecting their ecological adaptability.
- Phylogenetic analysis of siderophore systems provides valuable chemotaxonomic insights for the genus Marinobacter.
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