Spatial and Directional Variation of Growth Rates in Arabidopsis Root Apex: A Modelling Study
作者： Jerzy Nakielski , Marcin Lipowczan
DOI: 10.1371/JOURNAL.PONE.0084337
关键词: Tensor 、 Growth rate 、 Root cap 、 Geometry 、 Rhizodermis 、 Apex (geometry) 、 Root (chord) 、 Position (vector) 、 Physics 、 Bioinformatics 、 Anisotropy 、 General Biochemistry, Genetics and Molecular Biology 、 General Agricultural and Biological Sciences 、 General Medicine
摘要: Growth and cellular organization of the Arabidopsis root apex are investigated in various aspects, but still little is known about spatial directional variation growth rates very apical part apex, especially 3D. The present paper aims to fill this gap with aid a computer modelling based on tensor method. typical shape pattern considered. Previously, basis two types empirical data: published velocity profile along axis dimensions cell packets formed lateral cap, displacement field for was determined. Here adopted calculate linear rate different points directions. results interpreted taking principal directions into account. manifests significant anisotropy rate. preferences depend position within apex. In proper periclinal direction predominates everywhere, while cap predominating varies distance from quiescent centre. rhizodermis distinguished neighbouring tissues (cortex, cap) by relatively high contribution anticlinal direction. degree calculated planes defined exemplary walls may be as 25. changes modelled.
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