Complex Iron Uptake by the Putrebactin-Mediated and Feo Systems in Shewanella oneidensis

Author:

Liu Lulu1,Li Shisheng1,Wang Sijing1,Dong Ziyang1,Gao Haichun1

Affiliation:

1. Institute of Microbiology and College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China

Abstract

S. oneidensis is among the first- and the best-studied metal-reducing bacteria, with great potential in bioremediation and biotechnology. However, many questions regarding mechanisms closely associated with those applications, such as iron homeostasis, including iron uptake, export, and regulation, remain to be addressed. Here we show that Feo is a primary player in iron uptake in addition to the siderophore-dependent route. The investigation also resolved a few puzzles regarding the unexpected phenotypes of the putA mutant and lactate-dependent iron uptake. By elucidating the physiological roles of these two important iron uptake systems, this work revealed the breadth of the impacts of iron uptake systems on the biological processes.

Funder

National Natural Science Foundation of China

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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