RT Journal Article
SR Electronic
T1 GDSL-domain containing proteins mediate suberin biosynthesis and degradation, enabling developmental plasticity of the endodermis during lateral root emergence
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2020.06.25.171389
DO 10.1101/2020.06.25.171389
A1 Robertas Ursache
A1 Cristovao De Jesus Vieira-Teixeira
A1 Valérie Dénervaud Tendon
A1 Kay Gully
A1 Damien De Bellis
A1 Emanuel Schmid-Siegert
A1 Tonni Grube Andersen
A1 Vinay Shekhar
A1 Sandra Calderon
A1 Sylvain Pradervand
A1 Christiane Nawrath
A1 Niko Geldner
A1 Joop E.M. Vermeer
YR 2020
UL http://biorxiv.org/content/early/2020/06/27/2020.06.25.171389.abstract
AB Roots anchor plants and deliver water and nutrients from the soil. The root endodermis provides the crucial extracellular diffusion barrier by setting up a supracellular network of lignified cell walls, called Casparian strips, supported by a subsequent formation of suberin lamellae. Whereas lignification is thought to be irreversible, formation of suberin lamellae was demonstrated to be dynamic, facilitating adaptation to different soil conditions. Plants shape their root system through the regulated formation of lateral roots emerging from within the endodermis, requiring local breaking and re-sealing of the endodermal diffusion barriers. Here, we show that differentiated endodermal cells have a distinct auxin-mediated transcriptional response that regulates cell wall remodelling. Based on this data set we identify a set of GDSL-lipases that are essential for suberin formation. Moreover, we find that another set of GDSL-lipases mediates suberin degradation, which enables the developmental plasticity of the endodermis required for normal lateral root emergence.Competing Interest StatementThe authors have declared no competing interest.