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GDSL-domain proteins have key roles in suberin polymerization and degradation
Auteur(s)
Ursache, Robertas
De Jesus Teixeira, Cristovão
Dénervaud Tendon, Valérie
Gully, Kay
De Bellis, Damien
Schmid-Siegert, Emanuel
Grube Andersen, Toni
Shekhar, Vinay
Calderon, Sandra
Pradervand, Sylvain
Nawrath, Christiane
Geldner, Niko
Date de parution
2021-3-8
In
Nature Plants
Vol.
3
No
7
De la page
353
A la page
364
Revu par les pairs
1
Résumé
Plant roots acquire nutrients and water while managing interactions with the soil microbiota. The root endodermis provides an extracellular diffusion barrier through a network of lignified cell walls called Casparian strips, supported by subsequent formation of suberin lamellae. Whereas lignification is thought to be irreversible, suberin lamellae display plasticity, which is crucial for root adaptative responses. Although suberin is a major plant polymer, fundamental aspects of its biosynthesis and turnover have remained obscure. Plants shape their root system via lateral root formation, an auxin-induced process requiring local breaking and re-sealing of endodermal lignin and suberin barriers. Here, we show that differentiated endodermal cells have a specific, auxin-mediated transcriptional response dominated by cell wall remodelling genes. We identified two sets of auxin-regulated GDSL lipases. One is required for suberin synthesis, while the other can drive suberin degradation. These enzymes have key roles in suberization, driving root suberin plasticity.
Identifiants
Autre version
https://www.nature.com/articles/s41477-021-00862-9
Type de publication
journal article
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