离心机方法测定栓塞脆弱性曲线研究进展
Research Progress of Centrifuge Method for Measuring Embolism Vulnerability Curves

DOI: 10.12677/BR.2021.102017, PP. 113-119

Keywords: 离心机，栓塞，栓塞脆弱性曲线，木质部，导管
Centrifuge, Embolism, Embolism Vulnerability Curves, Xylem, Vessel

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Abstract:

为了更好的理解植物木质部栓塞和植物耐旱性之间的关系，人们引入了栓塞脆弱性概念，并通过构建栓塞脆弱性曲线(Vulnerability curves，简称VCs)来描述植物木质部栓塞易损程度。然而目前基于离心机技术构建植物木质部栓塞脆弱性曲线的准确性遭到很多学者的质疑，在使用离心机方法测定植物VCs时，由于开放导管的存在使离心机技术测定的VCs可能是“人工赝品”，不过也有学者在使用离心机方法构建长导管物种的VCs时，得到了准确的VCs。该文就近年来这一研究领域取得的成果及争议问题进行了概括和总结，主要涉及测定VCs的几种离心机方法，离心机方法构建植物VCs的原理以及优缺点，并对未来研究测定木质部栓塞脆弱性与实际运用相关方法的选择等提出了展望。
In order to better understand the relationship between plant xylem embolism and plant drought tolerance, the concept of embolic vulnerability was introduced, and the embolic vulnerability de-gree of plant xylem embolism was described by constructing embolic vulnerability curve (Vulne-rability curves, abbreviated as VCs). However, at present, the accuracy of constructing plant xylem embolism vulnerability curve based on centrifuge technology has been questioned by many scholars. When using centrifuge method to determine plant VCs, due to the existence of open catheter, the VCs determined by centrifuge technology may be “artificial fake”. However, some scholars have obtained accurate VCs when using centrifuge method to construct VCs of long vessel species. This paper summarizes the achievements and controversial issues in this research field in recent years, mainly involving several centrifuge methods for determining VCs, the principle, advantages and disadvantages of constructing plant VCs by centrifuge method, and puts forward the prospect of future research to determine the vulnerability of xylem embolism and the selection of methods related to practical application.

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