Cargando…

Iron sensing in plants

The ease of accepting or donating electrons is the raison d’être for the pivotal role iron (Fe) plays in a multitude of vital processes. In the presence of oxygen, however, this very property promotes the formation of immobile Fe(III) oxyhydroxides in the soil, which limits the concentration of Fe t...

Descripción completa

Detalles Bibliográficos
Autores principales: Vélez-Bermúdez, Isabel Cristina, Schmidt, Wolfgang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10032465/
https://www.ncbi.nlm.nih.gov/pubmed/36968364
http://dx.doi.org/10.3389/fpls.2023.1145510
_version_ 1784910806086844416
author Vélez-Bermúdez, Isabel Cristina
Schmidt, Wolfgang
author_facet Vélez-Bermúdez, Isabel Cristina
Schmidt, Wolfgang
author_sort Vélez-Bermúdez, Isabel Cristina
collection PubMed
description The ease of accepting or donating electrons is the raison d’être for the pivotal role iron (Fe) plays in a multitude of vital processes. In the presence of oxygen, however, this very property promotes the formation of immobile Fe(III) oxyhydroxides in the soil, which limits the concentration of Fe that is available for uptake by plant roots to levels well below the plant’s demand. To adequately respond to a shortage (or, in the absence of oxygen, a possible surplus) in Fe supply, plants have to perceive and decode information on both external Fe levels and the internal Fe status. As a further challenge, such cues have to be translated into appropriate responses to satisfy (but not overload) the demand of sink (i.e., non-root) tissues. While this seems to be a straightforward task for evolution, the multitude of possible inputs into the Fe signaling circuitry suggests diversified sensing mechanisms that concertedly contribute to govern whole plant and cellular Fe homeostasis. Here, we review recent progress in elucidating early events in Fe sensing and signaling that steer downstream adaptive responses. The emerging picture suggests that Fe sensing is not a central event but occurs in distinct locations linked to distinct biotic and abiotic signaling networks that together tune Fe levels, Fe uptake, root growth, and immunity in an interwoven manner to orchestrate and prioritize multiple physiological readouts.
format Online
Article
Text
id pubmed-10032465
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-100324652023-03-23 Iron sensing in plants Vélez-Bermúdez, Isabel Cristina Schmidt, Wolfgang Front Plant Sci Plant Science The ease of accepting or donating electrons is the raison d’être for the pivotal role iron (Fe) plays in a multitude of vital processes. In the presence of oxygen, however, this very property promotes the formation of immobile Fe(III) oxyhydroxides in the soil, which limits the concentration of Fe that is available for uptake by plant roots to levels well below the plant’s demand. To adequately respond to a shortage (or, in the absence of oxygen, a possible surplus) in Fe supply, plants have to perceive and decode information on both external Fe levels and the internal Fe status. As a further challenge, such cues have to be translated into appropriate responses to satisfy (but not overload) the demand of sink (i.e., non-root) tissues. While this seems to be a straightforward task for evolution, the multitude of possible inputs into the Fe signaling circuitry suggests diversified sensing mechanisms that concertedly contribute to govern whole plant and cellular Fe homeostasis. Here, we review recent progress in elucidating early events in Fe sensing and signaling that steer downstream adaptive responses. The emerging picture suggests that Fe sensing is not a central event but occurs in distinct locations linked to distinct biotic and abiotic signaling networks that together tune Fe levels, Fe uptake, root growth, and immunity in an interwoven manner to orchestrate and prioritize multiple physiological readouts. Frontiers Media S.A. 2023-03-08 /pmc/articles/PMC10032465/ /pubmed/36968364 http://dx.doi.org/10.3389/fpls.2023.1145510 Text en Copyright © 2023 Vélez-Bermúdez and Schmidt https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Vélez-Bermúdez, Isabel Cristina
Schmidt, Wolfgang
Iron sensing in plants
title Iron sensing in plants
title_full Iron sensing in plants
title_fullStr Iron sensing in plants
title_full_unstemmed Iron sensing in plants
title_short Iron sensing in plants
title_sort iron sensing in plants
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10032465/
https://www.ncbi.nlm.nih.gov/pubmed/36968364
http://dx.doi.org/10.3389/fpls.2023.1145510
work_keys_str_mv AT velezbermudezisabelcristina ironsensinginplants
AT schmidtwolfgang ironsensinginplants