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Author (up) Van Hemelryck, M.; Bernal, R.; Ispolatov, Y.; Dumais, J. pdf  doi
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  Title Lily Pollen Tubes Pulse According to a Simple Spatial Oscillator Type Journal Article
  Year 2018 Publication Scientific Reports Abbreviated Journal Sci Rep  
  Volume 8 Issue Pages 10 pp  
  Keywords  
  Abstract Polar growth is a fundamental mode of cell morphogenesis observed in nearly all major groups of organisms. Among polarly growing cells, the angiosperm pollen tubes have emerged as powerful experimental systems in large part because of their oscillatory growth, which provides a window into the network of interactions regulating morphogenesis. Empirical studies of oscillatory pollen tubes have sought to uncover the temporal sequence of cellular and molecular events that constitutes an oscillatory cycle. Here we show that in lily pollen tubes the distance or wavelength (lambda = 6.3 +/- 1.7 μm) over which an oscillatory cycle unfolds is more robust than the period of oscillation (tau = 39.1 +/- 17.6 s) (n = 159 cells). Moreover, the oscillatory cycle is divided into slow and fast phases, with each phase unfolding over precisely one half of the wavelength. Using these observations, we show that a simple spatial bi-oscillator predicts the most common modes of oscillation observed in pollen tubes. These results call into question the traditional view of pollen tube morphogenesis as a temporal succession of cellular events. Space, not time, may be the most natural metric to inteprete the morphogenetic dynamics of these cells.  
  Address [Van Hemelryck, Milenka; Bernal, Roberto; Ispolatov, Yaroslav] Univ Santiago Chile, Dept Fis, Santiago 9170124, Chile, Email: jacques.dumais@uai.cl  
  Corporate Author Thesis  
  Publisher Nature Publishing Group Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2045-2322 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000441538200028 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 896  
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