Article Synopsis
- A micro-cantilever technique was used to study leaf epidermis cells of Arabidopsis thaliana and Nicotiana tabacum, focusing on genetically encoded calcium indicators.
- Compressive forces caused immediate local calcium peaks followed by slower, moving calcium waves, while releasing the force led to faster calcium waves.
- The differences in wave characteristics indicate that plants can differentiate between touch and release based on the pressure changes.
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Article Abstract
A micro-cantilever technique applied to individual leaf epidermis cells of intact Arabidopsis thaliana and Nicotiana tabacum synthesizing genetically encoded calcium indicators (R-GECO1 and GCaMP3) revealed that compressive forces induced local calcium peaks that preceded delayed, slowly moving calcium waves. Releasing the force evoked significantly faster calcium waves. Slow waves were also triggered by increased turgor and fast waves by turgor drops in pressure probe tests. The distinct characteristics of the wave types suggest different underlying mechanisms and an ability of plants to distinguish touch from letting go.
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| http://dx.doi.org/10.1038/s41477-023-01418-9 | DOI Listing |
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