PREreviews of “Cell wall damage impairs root hair cell patterning and tissue morphogenesis mediated by the Arabidopsis receptor kinase STRUBBELIG” | PREreview

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Cell wall damage impairs root hair cell patterning and tissue morphogenesis mediated by the Arabidopsis receptor kinase STRUBBELIG

by Ajeet Chaudhary, Xia Chen, Barbara Leśniewska, Jin Gao, Sebastian Wolf, and Kay Schneitz

Posted: November 5, 2020
Server: bioRxiv
DOI: 10.1101/2020.11.04.368241

Abstract

Cell wall remodeling is essential for the control of growth and development as well as the regulation of stress responses. However, the underlying cell wall monitoring mechanisms remain poorly understood. Regulation of root hair fate and flower development inArabidopsis thalianarequires signaling mediated by the atypical receptor kinase STRUBBELIG (SUB). Furthermore, SUB is involved in cell wall integrity signaling and regulates the cellular response to reduced levels of cellulose, a central component of the cell wall. Here, we show that continuous exposure to sub-lethal doses of the cellulose biosynthesis inhibitor isoxaben results in altered root hair patterning and floral morphogenesis. Genetically impairing cellulose biosynthesis also results in root hair patterning defects. We further show that isoxaben exerts its developmental effects through the attenuation of SUB signaling. Our evidence indicates that down-regulation of SUB is a multi-step process and involves changes in SUB complex architecture at the plasma membrane, enhanced removal of SUB from the cell surface, and downregulation ofSUBtranscript levels. The results provide molecular insight into how the cell wall regulates cell fate and tissue morphogenesis.

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by Rajneesh Singhal

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PREreview by Rajneesh Singhal

Authored by Rajneesh Singhal

Cell wall damage impairs root hair cell patterning and tissue morphogenesis mediated by the Arabidopsis receptor kinase STRUBBELIG
Rajneesh Singhal and Deepak D. Bhandari
Department of Plant Biology, Michigan State University, East Lansing, USA.
This study by Chaudhary and colleagues show that the …

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