Related Experiment Video
Updated: Feb 15, 2026
05:26
A Venturi Effect Can Help Cure Our Trees
Published on: October 1, 2013
18.5K
Are there tides within trees?
1Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany.
Annals of Botany
|January 27, 2018
Summary
Tree stem diameter and electrical potential rhythms are regulated by lunisolar gravitational acceleration. This study confirms the synchrony between tidal forces and stem diameter changes, revealing a key environmental influence on plant physiology.
Area of Science:
- Plant Physiology
- Biophysics
- Environmental Science
Background:
- Tree stem diameters and electrical potentials show 24-25 hour rhythmic variations.
- These rhythms were previously hypothesized to be influenced by lunisolar gravitational forces under constant environmental conditions.
Purpose of the Study:
- To investigate the regulation of tree stem diameter variations.
- To re-evaluate published time-course data of diameter variations alongside lunisolar tidal acceleration.
Main Methods:
- Utilized the Etide program to estimate local gravitational changes from lunisolar forces.
- Analyzed contemporaneous time courses of tree stem diameter variations and lunisolar tidal acceleration.
- Investigated synchrony between turning points of lunisolar tides and stem diameter changes.
Main Results:
- A consistent synchronism was observed between the turning points of the lunisolar tide and stem diameter variations.
- This synchrony indicates a direct relationship between gravitational forces and stem diameter changes.
- The findings support the hypothesis that lunisolar forces regulate these plant rhythms.
Conclusions:
- Lunisolar gravitational acceleration is a primary regulator of tree stem diameter dilatations.
- Rhythms in tree stem diameter and electrical potentials are controlled by lunisolar gravitational forces.
- This study provides strong evidence for the influence of celestial mechanics on plant biological processes.
Related Concept Videos
02:40The Tree of Life - Bacteria, Archaea, Eukaryotes
39.4K
The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
39.4K
01:19Survival Tree
437
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...
Building a Survival Tree
Constructing a...
437
03:21Phylogenetic Trees
50.1K
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
50.1K
01:23The Bronchial Tree
7.0K
The human bronchi and bronchial tree play a crucial role in the respiratory system, facilitating the exchange of oxygen and carbon dioxide. Let's delve into the intricate structure and functions of these respiratory components.
The trachea, commonly known as the windpipe, is a tube that connects the larynx (voice box) to the bronchi. At a point called the carina, it bifurcates into two primary bronchi. The right primary bronchus is wider, shorter, and more vertical than the left primary...
The trachea, commonly known as the windpipe, is a tube that connects the larynx (voice box) to the bronchi. At a point called the carina, it bifurcates into two primary bronchi. The right primary bronchus is wider, shorter, and more vertical than the left primary...
7.0K
02:40The Tree of Life - Bacteria, Archaea, and Eukaryotes
24.8K
24.8K
02:35What is Evolutionary History?
43.8K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
43.8K