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  POM2/CSI1 is essential for functional association of cellulose synthase and microtubules in Arabidopsis

Bringmann, M., Li, E., Sampathkumar, A., Kocabek, T., Hauser, M.-T., & Persson, S. (2012). POM2/CSI1 is essential for functional association of cellulose synthase and microtubules in Arabidopsis. The Plant Cell, 24(1), 163-177. doi:10.​1105/​tpc.​111.​093575.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-2033-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-CE0B-B
Genre: Journal Article

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 Creators:
Bringmann, M.1, Author              
Li, E.2, Author
Sampathkumar, A.1, Author              
Kocabek, T.2, Author
Hauser, M.-T.2, Author
Persson, S.1, Author              
Affiliations:
1Plant Cell Walls - Persson, Max Planck Research Groups, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753318              
2External Organizations, ou_persistent22              

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 Abstract: In plants, regulation of cellulose synthesis is fundamental for morphogenesis and plant growth. Cellulose is synthesized at the plasma membrane, and the orientation of synthesis is guided by cortical microtubules; however, the guiding mechanism is currently unknown. We show that the conditional root elongation pom2 mutants are impaired in cell elongation, fertility, and microtubule-related functions. Map-based cloning of the POM-POM2 locus revealed that it is allelic to CELLULOSE SYNTHASE INTERACTING1 (CSI1). Fluorescently tagged POM2/CSI1s associated with both plasma membrane-located cellulose synthases (CESAs) and post-Golgi CESA-containing compartments. Interestingly, while CESA insertions coincided with cortical microtubules in the pom2/csi1 mutants, the microtubule-defined movement of the CESAs was significantly reduced in the mutant. We propose that POM2/CSI1 provides a scaffold between the CESAs and cortical microtubules that guide cellulose synthesis.

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Language(s): eng - English
 Dates: 2012-02-022012
 Publication Status: Published in print
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Title: The Plant Cell
  Abbreviation : Plant C
Source Genre: Journal
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Publ. Info: Rockville : American Society of Plant Physiologists
Pages: - Volume / Issue: 24 (1) Sequence Number: - Start / End Page: 163 - 177 Identifier: Other: 1532-298X
CoNE: https://pure.mpg.de/cone/journals/resource/1532-298X