Zhdanov Oleksandr, Blatt Michael R, Zare-Behtash Hossein, Busse Angela
James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
Laboratory of Plant Physiology and Biophysics, Bower Building, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
Quant Plant Biol. 2022 Apr 11;3:e7. doi: 10.1017/qpb.2021.14. eCollection 2022.
Plants acclimate to various types of mechanical stresses through thigmomorphogenesis and alterations in their mechanical properties. Although resemblance between wind- and touch-induced responses provides the foundation for studies where wind influence was mimicked by mechanical perturbations, factorial experiments revealed that it is not always straightforward to extrapolate results induced by one type of perturbation to the other. To investigate whether wind-induced changes in morphological and biomechanical traits can be reproduced, we subjected to two vectorial brushing treatments. Both treatments significantly affected the length, mechanical properties and anatomical tissue composition of the primary inflorescence stem. While some of the morphological changes were found to be in line with those induced by wind, changes in the mechanical properties exhibited opposite trends irrespective of the brushing direction. Overall, a careful design of the brushing treatment gives the possibility to obtain a closer match to wind-induced changes, including a positive tropic response.
植物通过触形态建成及其机械特性的改变来适应各种类型的机械应力。尽管风诱导反应和触摸诱导反应之间的相似性为通过机械扰动模拟风影响的研究提供了基础，但析因实验表明，将一种类型的扰动所诱导的结果外推到另一种类型并不总是那么直接。为了研究风诱导的形态和生物力学特征变化是否可以重现，我们对其进行了两种矢量刷处理。两种处理均显著影响了初级花序茎的长度、机械特性和解剖组织组成。虽然发现一些形态变化与风诱导的变化一致，但无论刷的方向如何，机械特性的变化都呈现出相反的趋势。总体而言，精心设计刷处理有可能更接近风诱导的变化，包括正向性反应。
