Related Experiment Video
Updated: Jun 29, 2026
08:03
Optogenetic Stimulation of Escape Behavior in Drosophila melanogaster
Published on: January 25, 2013
Action potential and contraction of Dionaea muscipula (Venus flytrap)
Science (New York, N.Y.)
|March 24, 1961
Summary
The Venus flytrap requires two stimuli to close its trap. The first stimulus causes a slow change in the leaf
Area of Science:
- Plant physiology
- Neurobiology
- Biophysics
Background:
- Dionaea muscipula (Venus flytrap) exhibits rapid leaf movements.
- Understanding the electrical signaling and mechanical response is crucial for plant science.
Purpose of the Study:
- To investigate the electrical activity and contraction mechanism in Dionaea muscipula.
- To determine the role of successive stimuli in triggering trap closure.
Main Methods:
- Observation of action potentials in the leaf.
- Recording of leaf contraction in response to stimuli.
Main Results:
- Two successive stimuli are typically required for Venus flytrap closure.
- The initial stimulus induces a slow depolarization.
- A second, rapid depolarization follows the first, initiating contraction.
Conclusions:
- Venus flytrap closure is a two-step process involving distinct electrical events.
- The sequential stimulation pattern is key to the plant's prey capture mechanism.
Keywords:
PLANTS
Related Concept Videos
02:04Regulation of Transpiration by Stomata
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
02:40Epiphytes, Parasites, and Carnivores
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the biosynthesis of the...
02:26Responses to Gravity and Touch
Gravitropism: Plant Responses to Gravity
02:41Responses to Drought and Flooding
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
01:28Carbon-dioxide Fixation
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...