Journal Article

Cellulose Biosynthesis in Plants: from Genes to Rosettes

Monika S. Doblin, Isaac Kurek, Deborah Jacob-Wilk and Deborah P. Delmer

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 43, issue 12, pages 1407-1420
Published in print December 2002 | ISSN: 0032-0781
Published online December 2002 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcf164
Cellulose Biosynthesis in Plants: from Genes to Rosettes

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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Modern techniques of gene cloning have identified the CesA genes as encoding the probable catalytic subunits of the plant CelS, the cellulose synthase enzyme complex visualized in the plasma membrane as rosettes. At least 10 CesA isoforms exist in Arabidopsis and have been shown by mutant analyses to play distinct role/s in the cellulose synthesis process. Functional specialization within this family includes differences in gene expression, regulation and, possibly, catalytic function. Current data points towards some CesA isoforms potentially being responsible for initiation or elongation of the recently identified sterol β-glucoside primer within different cell types, e.g. those undergoing either primary or secondary wall cellulose synthesis. Different CesA isoforms may also play distinct roles within the rosette, and there is some circumstantial evidence that CesA genes may encode the catalytic subunit of the mixed linkage glucan synthase or callose synthase. Various other proteins such as the Korrigan endocellulase, sucrose synthase, cytoskeletal components, Rac13, redox proteins and a lipid transfer protein have been implicated to be involved in synthesizing cellulose but, apart from CesAs, only Korrigan has been definitively linked with cellulose synthesis. These proteins should prove valuable in identifying additional CelS components.

Keywords: Keywords: Arabidopsis thaliana — Cellulose — CesA — Cotton (Gossypium hirsutum) — Plant polysaccharide biosynthesis.; Abbreviations: CalS, callose synthase enzyme complex; CD, cellodextrin; c-di-GMP, cyclic diguanylic acid; Csl, cellulose synthase-like; CelS, cellulose synthase enzyme complex; CesA (formerly CelA), cellulose synthase catalytic subunit; CGAbp, cellulose synthesis inhibitor CGA 325′615 binding protein; CR-P, plant conserved region; dpa, days post anthesis; DCB, 2,6-dichlorobenzonitrile; Glc, glucose; GT, glycosyltransferase; HVR, hypervariable region; Kor, Korrigan endocellulase; LTP, lipid transfer protein; Mt, metallothionein; MT, microtubule; SCD, sterol cellodextrin; SG, sitosterol-β-glucoside; SuSy, sucrose synthase; TC, terminal complex; TMH, transmembrane helix, UDP-Glc, uridine diphospho-glucose.

Journal Article.  11965 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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