Thierry Desprez

TL;DR: This study shows that CESA3 and CESA6 fused to GFP are expressed in the same cells and at the same time in the hypocotyl of etiolated seedlings and migrate with comparable velocities along linear trajectories at the cell surface, providing evidence for the existence of binding sites for three distinct CESA subunits in primary wall cellulose synthase complexes.

TL;DR: Mutants at the PROCUSTE1 (PRC1) locus show decreased cell elongation, specifically in roots and dark-grown hypocotyls, suggesting that cellulose synthesis in these organs requires the coordinated expression of at least two distinct cellulose synthase isoforms.

TL;DR: The results indicate that cellulose synthesis is coordinated with growth status and regulated in part through CSC internalization, and find that CSC insertion in the plasma membrane is regulated by pauses of the Golgi apparatus along cortical microtubules, which support a model in which cortical micro Tubules not only guide the trajectories of CSCs in the Plasma membrane, but also regulate the insertion and internalization of C SCs.

TL;DR: The cloning of IXR2 is reported on, and it is shown that it encodes another cellulose synthase isoform, CESA6, which is compatible with a model in which CESA 6 and CESA3 are active as a protein complex.

TL;DR: An 8.5-kb cosmid containing the KORRIGAN gene complements the cellulose-deficient rsw2-1 mutant of Arabidopsis and increases the parallels to cellulose synthesis in Agrobacterium tumefaciens where the celA and celC genes are required and encode a putative glycosyltransferase and an endo-1,4-beta-glucanase related to RSW1 and KOR, respectively.