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  Genetic evidence that cellulose synthase activity influences microtubule cortical array organization

Paredez, A. R., Persson, S., Ehrhardt, D. W., & Somerville, C. R. (2008). Genetic evidence that cellulose synthase activity influences microtubule cortical array organization. Plant Physiology, 147(4), 1723-1734. doi:10.1104/pp.108.120196.

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 Creators:
Paredez, A. R.1, Author
Persson, S.2, Author              
Ehrhardt, D. W.1, Author
Somerville, C. R.1, Author
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1External Organizations, ou_persistent22              
2Plant Cell Walls - Persson, Max Planck Research Groups, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753318              

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Free keywords: cell elongation arabidopsis-thaliana plasma-membrane phospholipase-d microfibril alignment plant-cells in-vivo tubulin growth mutants
 Abstract: To identify factors that influence cytoskeletal organization we screened for Arabidopsis ( Arabidopsis thaliana) mutants that show hypersensitivity to the microtubule destabilizing drug oryzalin. We cloned the genes corresponding to two of the 131 mutant lines obtained. The genes encoded mutant alleles of PROCUSTE1 and KORRIGAN, which both encode proteins that have previously been implicated in cellulose synthesis. Analysis of microtubules in the mutants revealed that both mutants have altered orientation of root cortical microtubules. Similarly, isoxaben, an inhibitor of cellulose synthesis, also altered the orientation of cortical microtubules while exogenous cellulose degradation did not. Thus, our results substantiate that proteins involved in cell wall biosynthesis influence cytoskeletal organization and indicate that this influence on cortical microtubule stability and orientation is correlated with cellulose synthesis rather than the integrity of the cell wall.

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Language(s): eng - English
 Dates: 2008-06-282008
 Publication Status: Published in print
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 Identifiers: ISI: ISI:000258184800025
DOI: 10.1104/pp.108.120196
ISSN: 0032-0889 (Print) 0032-0889 (Linking)
URI: ://000258184800025 http://www.jstor.org/stable/pdfplus/40066111.pdf
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Title: Plant Physiology
Source Genre: Journal
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Pages: - Volume / Issue: 147 (4) Sequence Number: - Start / End Page: 1723 - 1734 Identifier: -