Mutants irregular xylem

Arabidopsis, cell wall, cellulose, cellulose synthesis, irregular xylem, mutant. 

Alterations in either lignin e.g., re/S ) or cell wall carbohydrate polymers can lead to changes in the physical properties of cell walls, which often result in similar phenotypic consequences. Such was the case with the irregular xylem (irx) mutants that exhibit collapsed tracheary elements. These mutants were isolated by microscopic inspection of stem hand sections. The irxl, irx2, and irx3 mutants exhibited reductions in cellulose synthesis and/or deposition. The irx3 mutant was later characterized to encode a cellulose synthase. ... 

Szyjanowicz P.M.J., McKinnon I., Taylor N.G., Gardiner X, Jarvis M.C., and Turner S.R. (2004). The irregular xylem 2 mutant is an allele of korrigan that affects the secondary cell wall of Arabidopsis thaliana. Plant J. 37 730-740. 

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