Plant Physiol. Illumina
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 85:746-750 (1987)
© 1987 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (29)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Allnutt, F. C. T.
Right arrow Articles by Bonner, W. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Allnutt, F. C. T.
Right arrow Articles by Bonner, W. D., Jr.
Agricola
Right arrow Articles by Allnutt, F. C. T.
Right arrow Articles by Bonner, W. D.
Metabolism and Enzymology

Characterization of Iron Uptake from Ferrioxamine B by Chlorella vulgaris

F. C. Thomas Allnutt1 and Walter D. Bonner, Jr.2

Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104

Iron uptake from two Fe3+-hydroxamate siderophores, ferrioxamine B and Fe3+-rhodotorulate, by iron-stressed Chlorella vulgaris (ATCC strain 11468) was evaluated with some comparison to iron uptake from synthetic and organic acid ferric chelates. Iron-stress induced iron uptake from ferrioxamine B. Dissipation of the electrochemical gradient, via uncouplers, inhibited iron uptake. Respiratory inhibitors gave variable results, an indication that a direct link to respiration was not apparent. Vanadate inhibition of iron uptake indicated that an ATPase or phosphate intermediate could be involved in the uptake mechanism. Divalent cations manifested variable effects dependent on the cation and chelator used. These data confirm that C. vulgaris has an inducible iron-uptake system for Fe3+-hydroxamic acid siderophores which may involve a different mechanism than that observed for other chelates.

1 Supported by National Research Service Award training fellowship 5-T32-GM07229-10. Present address: Department of Biological Sciences, Purdue University, West Lafayette, IN 47907.

2 Supported by National Science Foundation grant PCM 79-14596.




This article has been cited by other articles:


Home page
 Plant Physiol.Home page
Y. Paz, E. Shimoni, M. Weiss, and U. Pick
Effects of Iron Deficiency on Iron Binding and Internalization into Acidic Vacuoles in Dunaliella salina
Plant Physiology, July 1, 2007; 144(3): 1407 - 1415.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
F.-J. Zhao, R. E. Hamon, E. Lombi, M. J. McLaughlin, and S. P. McGrath
Characteristics of cadmium uptake in two contrasting ecotypes of the hyperaccumulator Thlaspi caerulescens
J. Exp. Bot., March 1, 2002; 53(368): 535 - 543.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1987 by the American Society of Plant Biologists