Reduction-dependent siderophore assimilation in a model pennate diatom
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F19%3A00518853" target="_blank" >RIV/60077344:_____/19:00518853 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/19:43899741
Result on the web
<a href="https://www.pnas.org/content/pnas/116/47/23609.full.pdf" target="_blank" >https://www.pnas.org/content/pnas/116/47/23609.full.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1073/pnas.1907234116" target="_blank" >10.1073/pnas.1907234116</a>
Alternative languages
Result language
angličtina
Original language name
Reduction-dependent siderophore assimilation in a model pennate diatom
Original language description
Iron uptake by diatoms is a biochemical process with global biogeochemical implications. In large regions of the surface ocean diatoms are both responsible for the majority of primary production and frequently experiencing iron limitation of growth. The strategies used by these phytoplankton to extract iron from seawater constrain carbon flux into higher trophic levels and sequestration into sediments. In this study we use reverse genetic techniques to target putative iron-acquisition genes in the model pennate diatom Phaeodactylum tricornutum. We describe components of a reduction-dependent siderophore acquisition pathway that relies on a bacterial-derived receptor protein and provides a viable alternative to inorganic iron uptake under certain conditions. This form of iron uptake entails a close association between diatoms and siderophore-producing organisms during low-iron conditions. Homologs of these proteins are found distributed across diatom lineages, suggesting the significance of siderophore utilization by diatoms in the marine environment. Evaluation of specific proteins enables us to confirm independent iron-acquisition pathways in diatoms and characterize their preferred substrates. These findings refine our mechanistic understanding of the multiple iron-uptake systems used by diatoms and help us better predict the influence of iron speciation on taxa-specific iron bioavailability.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Proceedings of the National Academy of Sciences of the United States of America
ISSN
0027-8424
e-ISSN
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Volume of the periodical
116
Issue of the periodical within the volume
47
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
23609-23617
UT code for WoS article
000498683000040
EID of the result in the Scopus database
2-s2.0-85075228946