In vivo localization of iron starvation induced proteins under variable iron supplementation regimes in Phaeodactylum tricornutum
Abstract
Abstract The model pennate diatom Phaeodactylum tricornutum is able to assimilate a range of iron sources. It therefore provides a platform to study different mechanisms of iron processing concomitantly in the same cell. In this study, we follow the localization of three iron starvation induced proteins (ISIPs) in vivo, driven by their native promoters and tagged by fluorophores in an engineered line of P. tricornutum . We find that the localization patterns of ISIPs are dynamic and variable depending on the overall iron status of the cell and the source of iron it is exposed to. Notwithstanding, a shared destination of the three ISIPs both under ferric iron and siderophore‐bound iron supplementation is a globular compartment in the vicinity of the chloroplast. In a proteomic analysis, we identify that the cell engages endocytosis machinery involved in the vesicular trafficking as a response to siderophore molecules, even when these are not bound to iron. Our results suggest that there may be a direct vesicle traffic connection between the diatom cell membrane and the periplastidial compartment (PPC) that co‐opts clathrin‐mediated endocytosis and the “cytoplasm to vacuole” (Cvt) pathway, for proteins involved in iron assimilation. Proteomics data are available via ProteomeXchange with identifier PXD021172.more »
- Authors:
-
- Institut de Biologie de l'ENS (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM Université PSL Paris France
- Department of Parasitology, Faculty of Science Charles University Vestec Czech Republic
- Microbial and Environmental Genomics J. Craig Venter Institute La Jolla California USA, The Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research Bremerhaven Germany
- Scripps Institution of Oceanography, Integrative Oceanography Division University of California, San Diego La Jolla California USA
- CNRS, Institut Jacques Monod Université de Paris Paris France
- Microbial and Environmental Genomics J. Craig Venter Institute La Jolla California USA, Scripps Institution of Oceanography, Integrative Oceanography Division University of California, San Diego La Jolla California USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1906762
- Alternate Identifier(s):
- OSTI ID: 1906892
- Resource Type:
- Published Article
- Journal Name:
- Plant Direct
- Additional Journal Information:
- Journal Name: Plant Direct Journal Volume: 6 Journal Issue: 12; Journal ID: ISSN 2475-4455
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Kazamia, Elena, Mach, Jan, McQuaid, Jeffrey B., Gao, Xia, Coale, Tyler H., Malych, Ronald, Camadro, Jean‐Michel, Lesuisse, Emmanuel, Allen, Andrew E., Bowler, Chris, and Sutak, Robert. In vivo localization of iron starvation induced proteins under variable iron supplementation regimes in Phaeodactylum tricornutum. United Kingdom: N. p., 2022.
Web. doi:10.1002/pld3.472.
Kazamia, Elena, Mach, Jan, McQuaid, Jeffrey B., Gao, Xia, Coale, Tyler H., Malych, Ronald, Camadro, Jean‐Michel, Lesuisse, Emmanuel, Allen, Andrew E., Bowler, Chris, & Sutak, Robert. In vivo localization of iron starvation induced proteins under variable iron supplementation regimes in Phaeodactylum tricornutum. United Kingdom. https://doi.org/10.1002/pld3.472
Kazamia, Elena, Mach, Jan, McQuaid, Jeffrey B., Gao, Xia, Coale, Tyler H., Malych, Ronald, Camadro, Jean‐Michel, Lesuisse, Emmanuel, Allen, Andrew E., Bowler, Chris, and Sutak, Robert. Mon .
"In vivo localization of iron starvation induced proteins under variable iron supplementation regimes in Phaeodactylum tricornutum". United Kingdom. https://doi.org/10.1002/pld3.472.
@article{osti_1906762,
title = {In vivo localization of iron starvation induced proteins under variable iron supplementation regimes in Phaeodactylum tricornutum},
author = {Kazamia, Elena and Mach, Jan and McQuaid, Jeffrey B. and Gao, Xia and Coale, Tyler H. and Malych, Ronald and Camadro, Jean‐Michel and Lesuisse, Emmanuel and Allen, Andrew E. and Bowler, Chris and Sutak, Robert},
abstractNote = {Abstract The model pennate diatom Phaeodactylum tricornutum is able to assimilate a range of iron sources. It therefore provides a platform to study different mechanisms of iron processing concomitantly in the same cell. In this study, we follow the localization of three iron starvation induced proteins (ISIPs) in vivo, driven by their native promoters and tagged by fluorophores in an engineered line of P. tricornutum . We find that the localization patterns of ISIPs are dynamic and variable depending on the overall iron status of the cell and the source of iron it is exposed to. Notwithstanding, a shared destination of the three ISIPs both under ferric iron and siderophore‐bound iron supplementation is a globular compartment in the vicinity of the chloroplast. In a proteomic analysis, we identify that the cell engages endocytosis machinery involved in the vesicular trafficking as a response to siderophore molecules, even when these are not bound to iron. Our results suggest that there may be a direct vesicle traffic connection between the diatom cell membrane and the periplastidial compartment (PPC) that co‐opts clathrin‐mediated endocytosis and the “cytoplasm to vacuole” (Cvt) pathway, for proteins involved in iron assimilation. Proteomics data are available via ProteomeXchange with identifier PXD021172. Highlight The marine diatom P. tricornutum engages a vesicular network to traffic siderophores and phytotransferrin from the cell membrane directly to a putative iron processing site in the vicinity of the chloroplast.},
doi = {10.1002/pld3.472},
journal = {Plant Direct},
number = 12,
volume = 6,
place = {United Kingdom},
year = {Mon Dec 26 00:00:00 EST 2022},
month = {Mon Dec 26 00:00:00 EST 2022}
}
https://doi.org/10.1002/pld3.472
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