Differential Growth in Periclinal and Anticlinal Walls during Lobe Formation in Arabidopsis Cotyledon Pavement Cells
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چکیده
منابع مشابه
Differential Growth in Periclinal and Anticlinal Walls during Lobe Formation in Arabidopsis Cotyledon Pavement Cells.
Lobe development in the epidermal pavement cells of Arabidopsis thaliana cotyledons and leaves is thought to take place via tip-like growth on the concave side of lobes driven by localized concentrations of actin filaments and associated proteins, with a predicted role for cortical microtubules in establishing the direction of restricted growth at the convex side. We used homologous landmarks f...
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Pavementcells in the leafepidermisstartout assimplepolygonsanddevelop intopuzzleshaped units with interlocking lobes. This complex geometry offers biomechanical advantages; interlocking increases resistance to tension andmaintains the structural integrity of the leaf surface (Malinowski, 2013). Biologists have long since wondered how epidermal cells attain their wavy contours. In 1942, Watson p...
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Subcellular and supracellular mechanical stress prescribes cytoskeleton behavior in Arabidopsis cotyledon pavement cells
Although it is a central question in biology, how cell shape controls intracellular dynamics largely remains an open question. Here, we show that the shape of Arabidopsis pavement cells creates a stress pattern that controls microtubule orientation, which then guides cell wall reinforcement. Live-imaging, combined with modeling of cell mechanics, shows that microtubules align along the maximal ...
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ژورنال
عنوان ژورنال: The Plant Cell
سال: 2015
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.114.126664