Ultrasound Pulse Emission Spectroscopy Method to Characterize Xylem Conduits in Plant Stems  

作　　者：Satadal Dutta Zhiyi Chen Elias Kaiser Priscilla Malcolm Matamoros Peter G.Steeneken Gerard J.Verbiest 

机构地区：[1]Department of Precision and Microsystems Engineering,Faculty of 3ME,TU Delf,Mekelweg 2,2628CD Delf,Netherlands [2]Horticulture and Product Physiology,Department of Plant Sciences,Wageningen University and Research,Droevendaalsesteeg 6708PB Wageningen,Netherlands

出　　处：《Research》2023年第1期139-152,共14页研究（英文）

摘　　要：Although it is well known that plants emit acoustic pulses under drought stress,the exact origin of the waveform of these ultrasound pulses has remained elusive.Here,we present evidence for a correlation between the characteristics of the waveform of these pulses and the dimensions of xylem conduits in plants.Using a model that relates the resonant vibrations of a vessel to its dimension and viscoelasticity,we extract the xylem radi from the waveforms of ultrasound pulses and show that these are correlated and in good agreement with optical microscopy.We demonstrate the versatility of the method by applying it to shoots of ten different vascular plant species.In particular,for Hydrangea quercifolia,we further extract vessel element lengths with our model and compare them with scanning electron cryomicroscopy.The ultrasonic,noninvasive characterization of internal conduit dimensions enables a breakthrough in speed and accuracy in plant phenotyping and stress detection.

关 键 词：DIMENSIONS BREAKTHROUGH PULSE 

分 类 号：O657.3[理学—分析化学]