植物形态发生的流体力学场论
Hydromechanical field theory of plant morphogenesis
AI总结：
本文提出植物生长的物理场论，将组织视为孔形态弹性体，解释生长源于压力变形与渗透吸水，为植物形态发生建立力学场论基础。
摘要：
植物的生长是一种流体力学现象，在此过程中，细胞通过吸收水分而增大，同时其细胞壁在膨压引起的张力下扩展和重塑。在多细胞组织中，细胞在机械上相互连接，形态发生是局部细胞生长的综合效应，这反映了异质机械、物理和化学场的作用，每个场在组织内施加不同程度的非局部影响。为了描述这一过程，我们提出了一种植物生长的物理场论。该理论将组织视为孔形态弹性体，即一种生长的多孔弹性介质，其中生长源于压力引起的变形和组织渗透驱动的吸水。从这个角度来看，生长区域对应于水力汇，从而导致复杂的非局部调控的可能性，例如水分竞争和生长引起的水势梯度。更一般地，这项工作旨在为植物形态发生的机械论、力学场论奠定基础，在该场论中，生长源于多个物理场的相互作用，并且生化调控通过特定的物理参数整合进来。
英文摘要：
The growth of plants is a hydromechanical phenomenon in which cells enlarge by absorbing water, while their walls expand and remodel under turgor-induced tension. In multicellular tissues, where cells are mechanically interconnected, morphogenesis results from the combined effect of local cell growths, which reflects the action of heterogeneous mechanical, physical, and chemical fields, each exerting varying degrees of nonlocal influence within the tissue. To describe this process, we propose a physical field theory of plant growth. This theory treats the tissue as a poromorphoelastic body, namely a growing poroelastic medium, where growth arises from pressure-induced deformations and osmotically-driven imbibition of the tissue. From this perspective, growing regions correspond to hydraulic sinks, leading to the possibility of complex non-local regulations, such as water competition and growth-induced water potential gradients. More in general, this work aims to establish foundations for a mechanistic, mechanical field theory of morphogenesis in plants, where growth arises from the interplay of multiple physical fields, and where biochemical regulations are integrated through specific physical parameters.
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