Journal article

Genetic evidence for three unique components in primary cell-wall cellulose synthase complexes in Arabidopsis

Staffan Persson, Alexander Paredez, Andrew Carroll, Hildur Palsdottir, Monika Doblin, Patricia Poindexter, Natalie Khitrov, Manfred Auer, Chris R Somerville

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | NATL ACAD SCIENCES | Published : 2007

Abstract

In higher plants, cellulose is synthesized at the plasma membrane by the cellulose synthase (CESA) complex. The catalytic core of the complex is believed to be composed of three types of CESA subunits. Indirect evidence suggests that the complex associated with primary wall cellulose deposition consists of CESA1, -3, and -6 in Arabidopsis thaliana. However, phenotypes associated with mutations in two of these genes, CESA1 and -6, suggest unequal contribution by the different CESAs to overall enzymatic activity of the complex. We present evidence that the primary complex requires three unique types of components, CESA1-, CESA3-, and CESA6-related, for activity. Removal of any of these compone..

View full abstract