Rswl-1 mutants

Sugimoto K., Williamson R.E., and Wasteneys G.0.2001. Wall architecture in the cellulose-deficient rswl mutant of Arabidopsis thaliana microfibrils but not microtubules lose their transverse alignment before microlibrils become unrecognizable in the mitotic and elongation zones of roots. Protoplasma 215 172-183. 

Studies on mutants affecting cellulose synthesis in the primary cell wall have also led to the idea that three catalytic subunits are required for cellulose synthesis in these cell types. These genes are different from those required in the secondary cell wall (Arioli et al. 1998 Fagard et al. 2000 Scheible et al. 2001). Work on the rswl mutant of Arabidopsis demonstrates that in addition to their catalytic fimc-tion, CesA proteins are also essential for determining rosette structure, rswl-1 is caused by a comparatively small amino acid change (Ala to Val) in AtCesAl, yet at the restrictive temperature the hexameric rosettes are replaced by smaller structures (Arioli et al. 1998). 

Williamson R.E., Birch J.E., Baskin T.I., Arioli T., Betzner A.S., and Cork A. 2001. Morphology of rswl, a cellulose-deficient mutant of Arabidopsis thaliana. Protoplasma 215 116-127. 

---