GDSL-domain proteins have key roles in suberin polymerization and degradation
Robertas Ursache, Cristovão De Jesus Teixeira, Valérie Dénervaud Tendon, Kay Gully, Damien De Bellis, Emanuel Schmid-Siegert, Toni Grube Andersen, Vinay Shekhar, Sandra Calderon, Sylvain Pradervand, Christiane Nawrath, Niko Geldner & Joop Vermeer
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. |
Mots-clés |
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Citation | Ursache, R., De Jesus Teixeira, C., Dénervaud Tendon, V., Gully, K., De Bellis, D., Schmid-Siegert, E., Grube Andersen, T., Shekhar, V., Calderon, S., Pradervand, S., Nawrath, C., Geldner, N., & Vermeer, J. (2021). GDSL-domain proteins have key roles in suberin polymerization and degradation. Nature Plants, 7(3), 353-364. |
Type | Article de périodique (Anglais) |
Date de publication | 8-3-2021 |
Nom du périodique | Nature Plants |
Volume | 7 |
Numéro | 3 |
Pages | 353-364 |
URL | https://www.nature.com/articles/s41477-021-00862-9 |
Liée au projet | Talking with the neighbours: Understanding spatial accomm... |