Dep. Integrative Zoologie, University of Vienna, Althanstr. 14, A-1090 Wien, Austria.
Sci Rep. 2017 Mar 14;7:44526. doi: 10.1038/srep44526.
Measurements of photosynthetic processes in hydrophytes mostly involve photosynthometers, which capture the escaping gas for subsequent analysis The most common method to detect changes in the rate of photosynthetic processes is to count the series of escaping gas bubbles. The emerging bubbles are either simply counted or they are recorded using light barriers, which is very difficult because of their small size and often varying ascent rate. The gas bubbles generated during photosynthesis by aquatic plants produce distinctive sound pulses when leaving the plants. These acoustic side effects enable completely new and highly accurate measurements. The frequency and reaction time changes of the pulses caused by external influences are therefore accurately detectable. The precise time measurements enable registering and evaluating the curves as reactions to changes in physical or chemical environmental conditions. We show that such acoustic analyses open completely new research opportunities for plant physiology.
水生植物光合作用的测量大多涉及到光合仪，它捕获逸出的气体以便后续分析。检测光合作用速率变化最常用的方法是数逸出的一连串气泡。新产生的气泡要么简单地数出来，要么用光障记录下来，但是由于气泡体积小且上升速度常常变化，这非常困难。水生植物在光合作用过程中产生的气体气泡在离开植物时会产生独特的声脉冲。这些声学副效应使得可以进行全新的、非常精确的测量。因此，可以准确检测到外部影响引起的脉冲频率和反应时间的变化。精确的时间测量可以注册和评估这些曲线，以作为对物理或化学环境条件变化的反应。我们表明，这种声学分析为植物生理学开辟了全新的研究机会。
