Iron-Oxidizing Bacteria Are Associated with Ferric Hydroxide Precipitates (Fe-Plaque) on the Roots of Wetland Plants-Reference-Cited by-同舟云学术

Iron-Oxidizing Bacteria Are Associated with Ferric Hydroxide Precipitates (Fe-Plaque) on the Roots of Wetland Plants

Published:1999-06 Issue:6 Volume:65 Page:2758-2761
ISSN:0099-2240
Container-title:Applied and Environmental Microbiology
language:en
Short-container-title:Appl Environ Microbiol

Author:

Emerson David¹²³,Weiss Johanna V.²³,Megonigal J. Patrick³

Affiliation:

1. American Type Culture Collection1 and

2. Institute for Biosciences, Bioinformatics and Biotechnology, George Mason University,2 Manassas, and

3. Department of Biology, George Mason University, Fairfax,3Virginia

Abstract

ABSTRACT The presence of Fe-oxidizing bacteria in the rhizosphere of four different species of wetland plants was investigated in a diverse wetland environment that had Fe(II) concentrations ranging from tens to hundreds of micromoles per liter and a pH range of 3.5 to 6.8. Enrichments for neutrophilic, putatively lithotrophic Fe-oxidizing bacteria were successful on roots from all four species; acidophilic Fe-oxidizing bacteria were enriched only on roots from plants whose root systems were exposed to soil solutions with a pH of <4. In Sagittaria australis there was a positive correlation ( P < 0.01) between cell numbers and the total amount of Fe present; the same correlation was not found for Leersia oryzoides . These results present the first evidence for culturable Fe-oxidizing bacteria associated with Fe-plaque in the rhizosphere.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Link

https://journals.asm.org/doi/pdf/10.1128/AEM.65.6.2758-2761.1999

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