有哪些信誉好的足球投注网站alignment between pin1 polarity and microtubule orientation in the shoot apical meristem reveals a tight coupling between morphogenesis and auxin transport对齐pin1极性和微管取向之间的顶端分生组织形态发生和生长素运输之间的紧密耦合.pdfVIP
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alignment between pin1 polarity and microtubule orientation in the shoot apical meristem reveals a tight coupling between morphogenesis and auxin transport对齐pin1极性和微管取向之间的顶端分生组织形态发生和生长素运输之间的紧密耦合
Alignment between PIN1 Polarity and Microtubule
Orientation in the Shoot Apical Meristem Reveals a Tight
Coupling between Morphogenesis and Auxin Transport
1.¤ 2. 3. 2 1¤
Marcus G. Heisler , Olivier Hamant , Pawel Krupinski , Magalie Uyttewaal , Carolyn Ohno , Henrik
¨ 3 . 2 1
Jonsson * , Jan Traas *, Elliot M. Meyerowitz *
´
1 Division of Biology, California Institute of Technology, Pasadena, California, United States of America, 2 INRA, CNRS, ENS, Universite de Lyon, Lyon Cedex, France,
3 Computational Biology and Biological Physics Group, Department of Theoretical Physics, Lund University, Lund, Sweden
Abstract
Morphogenesis during multicellular development is regulated by intercellular signaling molecules as well as by the
mechanical properties of individual cells. In particular, normal patterns of organogenesis in plants require coordination
between growth direction and growth magnitude. How this is achieved remains unclear. Here we show that in Arabidopsis
thaliana, auxin patterning and cellular growth are linked through a correlated pattern of auxin efflux carrier localization and
cortical microtubule orientation. Our experiments reveal that both PIN1 localization and microtubule array orientation are
likely to respond to a shared upstream regulator that appears to be biomechanical in nature. Lastly, through mathematical
modeling we show that such a biophysical coupling could mediate the feedback loop between auxin and its t
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