NDLI: The fate of siderophores: antagonistic environmental interactions in exudate-mediated micronutrient uptake

Content Provider	Springer Nature Link
Author	Harrington, James M. Duckworth, Owen W. Haselwandter, Kurt
Copyright Year	2015
Abstract	Organisms acquire metals from the environment by releasing small molecules that solubilize and promote their specific uptake. The best known example of this nutrient uptake strategy is the exudation of siderophores, which are a structurally-diverse class of molecules that are traditionally viewed as being integral to iron uptake. Siderophores have been proposed to act through a variety of processes, but their effectiveness can be mitigated by a variety of chemical and physical processes of both biotic and abiotic origin. Processes that occur at the surface of minerals can degrade or sequester siderophores, preventing them from fulfilling their function of returning metals to the organism. In addition, biotic processes including enzymatic degradation of the siderophore and piracy of the metal or of the siderophore complex also disrupt iron uptake. Some organisms have adapted their nutrient acquisition strategies to address these potential pitfalls, producing multiple siderophores and other exudates that take advantage of varying kinetic and thermodynamic factors to allow the continued uptake of metals. A complete understanding of the factors that contribute to metal uptake in nature will require a concerted effort to study processes identified in laboratory systems in the context of more complicated environmental systems.
Starting Page	461
Ending Page	472
Page Count	12
File Format	PDF
ISSN	09660844
Journal	BioMetals
Volume Number	28
Issue Number	3
e-ISSN	15728773
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-01-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Siderophores Biogeochemistry Iron acquisition Rhizosphere Micronutrient uptake Biochemistry Pharmacology/Toxicology Microbiology Cell Biology Plant Physiology Medicine/Public Health
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Biochemistry, Genetics and Molecular Biology Biomaterials Agricultural and Biological Sciences

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