Costa Ádrya Vanessa Lira, Oliveira Thiago Francisco de Carvalho, Posso Douglas Antônio, Reissig Gabriela Niemeyer, Parise André Geremia, Barros Willian Silva, Souza Gustavo Maia
Laboratory of Plant Cognition and Electrophysiology, Department of Botany, Institute of Biology, Federal University of Pelotas, Capão do Leão CEP 96160-000, Rio Grande do Sul, Brazil.
School of Biological Sciences, University of Reading, Reading RG6 6AH, UK.
Plants (Basel). 2023 Feb 17;12(4):924. doi: 10.3390/plants12040924.
To survive in a dynamic environment growing fixed to the ground, plants have developed mechanisms for monitoring and perceiving the environment. When a stimulus is perceived, a series of signals are induced and can propagate away from the stimulated site. Three distinct types of systemic signaling exist, i.e., (i) electrical, (ii) hydraulic, and (iii) chemical, which differ not only in their nature but also in their propagation speed. Naturally, plants suffer influences from two or more stimuli (biotic and/or abiotic). Stimuli combination can promote the activation of new signaling mechanisms that are explicitly activated, as well as the emergence of a new response. This study evaluated the behavior of electrical (electrome) and hydraulic signals after applying simple and combined stimuli in common bean plants. We used simple and mixed stimuli applications to identify biochemical responses and extract information from the electrical and hydraulic patterns. Time series analysis, comparing the conditions before and after the stimuli and the oxidative responses at local and systemic levels, detected changes in electrome and hydraulic signal profiles. Changes in electrome are different between types of stimulation, including their combination, and systemic changes in hydraulic and oxidative dynamics accompany these electrical signals.
为了在扎根于地面的动态环境中生存，植物已经进化出监测和感知环境的机制。当感知到刺激时，一系列信号被诱导产生，并能从受刺激部位传播开来。存在三种不同类型的系统性信号，即：（i）电信号，（ii）液压信号，以及（iii）化学信号，它们不仅本质不同，传播速度也不同。自然地，植物会受到两种或更多刺激（生物和/或非生物）的影响。刺激组合可以促进新的信号机制的激活以及新反应的出现，这些新机制是明确被激活的。本研究评估了在普通菜豆植株上施加单一和组合刺激后电信号（机电信号）和液压信号的表现。我们通过单一和混合刺激应用来识别生化反应，并从电信号和液压信号模式中提取信息。时间序列分析，比较刺激前后的条件以及局部和系统水平的氧化反应，检测到了机电信号和液压信号特征的变化。不同类型的刺激（包括其组合）之间机电信号的变化有所不同，并且这些电信号伴随着液压和氧化动力学的系统变化。
