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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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Bringmann-2012-POM2_CSI1 is essenti.pdf (beliebiger Volltext), 2MB
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Bringmann, M.1, Autor           
Li, E.2, Autor
Sampathkumar, A.1, Autor           
Kocabek, T.2, Autor
Hauser, M.-T.2, Autor
Persson, S.1, Autor           
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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 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2012-02-022012
 Publikationsstatus: Erschienen
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Titel: The Plant Cell
  Kurztitel : Plant C
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Rockville : American Society of Plant Physiologists
Seiten: - Band / Heft: 24 (1) Artikelnummer: - Start- / Endseite: 163 - 177 Identifikator: Anderer: 1532-298X
CoNE: https://pure.mpg.de/cone/journals/resource/1532-298X