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GDSL-domain proteins have key roles in suberin polymerization and degradation

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Ursache Robertas, De Jesus Vieira Teixeira Cristovāo, Dénervaud Tendon Valérie, Gully Kay, De Bellis Damien, Schmid-Siegert Emanuel, Grube Andersen Tonni, Shekhar Vinay, Calderon Sandra, Pradervand Sylvain, Nawrath Christiane, Geldner Niko, Vermeer Joop E. M.,
Project Talking with the neighbours: Understanding spatial accommodation during plant development
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Original article (peer-reviewed)

Journal Nature Plants
Volume (Issue) 7
Page(s) 353 - 364
Title of proceedings Nature Plants
DOI 10.1038/s41477-021-00862-9

Open Access

URL http://xxxx
Type of Open Access Green OA Embargo (Freely available via Repository after an embargo)

Abstract

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.
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