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Light as stress factor to plant roots – case of root halotropism
Despite growing underground, largely in darkness, roots emerge to be very sensitive to light. Recently, several important papers have been published which reveal that plant roots not only express all known light receptors but also that their growth, physiology and adaptive stress responses are light...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264407/ https://www.ncbi.nlm.nih.gov/pubmed/25566292 http://dx.doi.org/10.3389/fpls.2014.00718 |
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author | Yokawa, Ken Fasano, Rossella Kagenishi, Tomoko Baluška, František |
author_facet | Yokawa, Ken Fasano, Rossella Kagenishi, Tomoko Baluška, František |
author_sort | Yokawa, Ken |
collection | PubMed |
description | Despite growing underground, largely in darkness, roots emerge to be very sensitive to light. Recently, several important papers have been published which reveal that plant roots not only express all known light receptors but also that their growth, physiology and adaptive stress responses are light-sensitive. In Arabidopsis, illumination of roots speeds-up root growth via reactive oxygen species-mediated and F-actin dependent process. On the other hand, keeping Arabidopsis roots in darkness alters F-actin distribution, polar localization of PIN proteins as well as polar transport of auxin. Several signaling components activated by phytohormones are overlapping with light-related signaling cascade. We demonstrated that the sensitivity of roots to salinity is altered in the light-grown Arabidopsis roots. Particularly, light-exposed roots are less effective in their salt-avoidance behavior known as root halotropism. Here we discuss these new aspects of light-mediated root behavior from cellular, physiological and evolutionary perspectives. |
format | Online Article Text |
id | pubmed-4264407 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-42644072015-01-06 Light as stress factor to plant roots – case of root halotropism Yokawa, Ken Fasano, Rossella Kagenishi, Tomoko Baluška, František Front Plant Sci Plant Science Despite growing underground, largely in darkness, roots emerge to be very sensitive to light. Recently, several important papers have been published which reveal that plant roots not only express all known light receptors but also that their growth, physiology and adaptive stress responses are light-sensitive. In Arabidopsis, illumination of roots speeds-up root growth via reactive oxygen species-mediated and F-actin dependent process. On the other hand, keeping Arabidopsis roots in darkness alters F-actin distribution, polar localization of PIN proteins as well as polar transport of auxin. Several signaling components activated by phytohormones are overlapping with light-related signaling cascade. We demonstrated that the sensitivity of roots to salinity is altered in the light-grown Arabidopsis roots. Particularly, light-exposed roots are less effective in their salt-avoidance behavior known as root halotropism. Here we discuss these new aspects of light-mediated root behavior from cellular, physiological and evolutionary perspectives. Frontiers Media S.A. 2014-12-12 /pmc/articles/PMC4264407/ /pubmed/25566292 http://dx.doi.org/10.3389/fpls.2014.00718 Text en Copyright © 2014 Yokawa, Fasano, Kagenishi and Baluška. http://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) or licensor 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 Yokawa, Ken Fasano, Rossella Kagenishi, Tomoko Baluška, František Light as stress factor to plant roots – case of root halotropism |
title | Light as stress factor to plant roots – case of root halotropism |
title_full | Light as stress factor to plant roots – case of root halotropism |
title_fullStr | Light as stress factor to plant roots – case of root halotropism |
title_full_unstemmed | Light as stress factor to plant roots – case of root halotropism |
title_short | Light as stress factor to plant roots – case of root halotropism |
title_sort | light as stress factor to plant roots – case of root halotropism |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264407/ https://www.ncbi.nlm.nih.gov/pubmed/25566292 http://dx.doi.org/10.3389/fpls.2014.00718 |
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