Adaptation of Root Function by Nutrient-Induced Plasticity of Endodermal Differentiation.

Détails

ID Serval
serval:BIB_F87F4DEBD1B4
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Adaptation of Root Function by Nutrient-Induced Plasticity of Endodermal Differentiation.
Périodique
Cell
Auteur(s)
Barberon M., Vermeer J.E., De Bellis D., Wang P., Naseer S., Andersen T.G., Humbel B.M., Nawrath C., Takano J., Salt D.E., Geldner N.
ISSN
1097-4172 (Electronic)
ISSN-L
0092-8674
Statut éditorial
Publié
Date de publication
2016
Volume
164
Numéro
3
Pages
447-459
Langue
anglais
Résumé
Plant roots forage the soil for minerals whose concentrations can be orders of magnitude away from those required for plant cell function. Selective uptake in multicellular organisms critically requires epithelia with extracellular diffusion barriers. In plants, such a barrier is provided by the endodermis and its Casparian strips-cell wall impregnations analogous to animal tight and adherens junctions. Interestingly, the endodermis undergoes secondary differentiation, becoming coated with hydrophobic suberin, presumably switching from an actively absorbing to a protective epithelium. Here, we show that suberization responds to a wide range of nutrient stresses, mediated by the stress hormones abscisic acid and ethylene. We reveal a striking ability of the root to not only regulate synthesis of suberin, but also selectively degrade it in response to ethylene. Finally, we demonstrate that changes in suberization constitute physiologically relevant, adaptive responses, pointing to a pivotal role of the endodermal membrane in nutrient homeostasis.
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/02/2016 7:35
Dernière modification de la notice
20/08/2019 16:24
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