DOI: 10.1128/aem.67.12.5444-5452.2001. Iron Stress in Open-Ocean Cyanobacteria ( Synechococcus , Trichodesmium , and Crocosphaera spp.): Identification of the IdiA Protein

Iron Stress in Open-Ocean Cyanobacteria ( Synechococcus , Trichodesmium , and Crocosphaera spp.): Identification of the IdiA Protein

10.1128/aem.67.12.5444-5452.2001

Crossref journal-article

American Society for Microbiology

Applied and Environmental Microbiology (235)

Abstract

ABSTRACT Cyanobacteria are prominent constituents of the marine biosphere that account for a significant percentage of oceanic primary productivity. In an effort to resolve how open-ocean cyanobacteria persist in regions where the Fe concentration is thought to be limiting their productivity, we performed a number of Fe stress experiments on axenic cultures of marine Synechococcus spp. , Crocosphaera sp. , and Trichodesmium sp. Through this work, we determined that all of these marine cyanobacteria mount adaptive responses to Fe stress, which resulted in the induction and/or repression of several proteins. We have identified one of the Fe stress-induced proteins as an IdiA homologue. Genomic observations and laboratory data presented herein from open-ocean Synechococcus spp. are consistent with IdiA having a role in cellular Fe scavenging. Our data indicate that IdiA may make an excellent marker for Fe stress in open-ocean cyanobacterial field populations. By determining how these microorganisms respond to Fe stress, we will gain insight into how and when this important trace element can limit their growth in situ . This knowledge will greatly increase our understanding of how marine Fe cycling impacts oceanic processes, such as carbon and nitrogen fixation.

Bibliography

Webb, E. A., Moffett, J. W., & Waterbury, J. B. (2001). Iron Stress in Open-Ocean Cyanobacteria ( Synechococcus , Trichodesmium , and Crocosphaera spp.): Identification of the IdiA Protein. Applied and Environmental Microbiology, 67(12), 5444â5452.

Authors 3

E. A. Webb (first)
J. W. Moffett (additional)
J. B. Waterbury (additional)

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Dates

Type	When
Created	23 years, 1 month ago (July 27, 2002, 5:56 a.m.)
Deposited	3 years, 6 months ago (Feb. 23, 2022, 6:01 a.m.)
Indexed	4 weeks, 2 days ago (Aug. 6, 2025, 9:50 a.m.)
Issued	23 years, 9 months ago (Dec. 1, 2001)
Published	23 years, 9 months ago (Dec. 1, 2001)
Published Print	23 years, 9 months ago (Dec. 1, 2001)

Funders 0

None

BibTeX

@article{Webb_2001, title={Iron Stress in Open-Ocean Cyanobacteria ( Synechococcus , Trichodesmium , and Crocosphaera spp.): Identification of the IdiA Protein}, volume={67}, ISSN={1098-5336}, url={http://dx.doi.org/10.1128/aem.67.12.5444-5452.2001}, DOI={10.1128/aem.67.12.5444-5452.2001}, number={12}, journal={Applied and Environmental Microbiology}, publisher={American Society for Microbiology}, author={Webb, E. A. and Moffett, J. W. and Waterbury, J. B.}, year={2001}, month=dec, pages={5444–5452} }

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