Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Sensation01:21

Sensation

1.9K
Sensory receptors are specialized neurons that respond to specific types of external stimuli, initiating the process known as sensation. This occurs when sensory input, such as light entering the eye, is detected by these receptors, causing chemical changes in the cells of the retina. These cells then convert the sensory stimulus into action potentials that are transmitted to the central nervous system, a process termed transduction.
Absolute thresholds can quantify the sensitivity of sensory...
1.9K
Precipitation Titration: Endpoint Detection Methods01:19

Precipitation Titration: Endpoint Detection Methods

6.6K
In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
6.6K
Types of Coprecipitation01:10

Types of Coprecipitation

7.0K
Coprecipitation is the contamination of a precipitate by otherwise soluble species and occurs via different processes. In colloidal precipitates, coprecipitation occurs via surface adsorption. For instance, barium sulfate has a primary layer of adsorbed barium ions and a secondary layer of nitrate counterions. This results in contamination of the precipitate by barium nitrate.
Sometimes, ions in a crystal lattice can undergo isomorphous replacement by inclusions of similar charge and size. For...
7.0K
Difference from Background: Limit of Detection01:05

Difference from Background: Limit of Detection

10.1K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
10.1K
Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

7.2K
In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
7.2K
Capillary Exchange01:28

Capillary Exchange

13.4K
The cardiovascular system's chief role is to disseminate gases, nutrients, waste, and other substances to the body's cells. Small molecules like gases, lipids, and lipid-soluble substances directly diffuse through capillary wall endothelial cell membranes. Glucose, amino acids, and ions, including sodium, potassium, calcium, and chloride, use transporters for facilitated diffusion via membrane-specific channels. Glucose, ions, and bigger molecules may also pass through intercellular...
13.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Separating intrinsic from extrinsic stomatal control in different soils.

The New phytologist·2026
Same author

Continuous monitoring of plant water potential: sensor-based approaches and best practices.

The New phytologist·2026
Same author

The interplay between hydraulic capacitance and stomatal regulation strategy affects soil-plant hydraulics and transpiration.

The New phytologist·2026
Same author

Soils drive convergence in the regulation of vascular tension in land plants.

Science (New York, N.Y.)·2026
Same author

From growth potential to drought survival: a trait- and time-based framework for plant water economics across vascular species.

The New phytologist·2026
Same author

Early signals of water limitations begin at the root-soil interface: linking rhizosphere drying to water uptake decline.

The New phytologist·2025

Related Experiment Video

Updated: Apr 12, 2026

High-Throughput Capable Three-Dimensional Tissue Model for Quantification of Electroporation Thresholds
08:23

High-Throughput Capable Three-Dimensional Tissue Model for Quantification of Electroporation Thresholds

Published on: August 19, 2025

699

Roots at the percolation threshold.

Eva Kroener1, Mutez Ali Ahmed1, Andrea Carminati1

  • 1Division of Soil Hydrology, Department of Crop Science, University of Göttingen, Göttingen, Germany.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|May 15, 2015
PubMed
Summary
This summary is machine-generated.

Plant root mucilage controls water flow in soil. Too much mucilage makes the rhizosphere impermeable, impacting water uptake. This suggests plants may regulate soil water access by altering mucilage concentration.

More Related Videos

Psychophysical Tracking Method to Assess Taste Detection Thresholds in Children, Adolescents, and Adults: The Taste Detection Threshold TDT Test
08:52

Psychophysical Tracking Method to Assess Taste Detection Thresholds in Children, Adolescents, and Adults: The Taste Detection Threshold TDT Test

Published on: April 21, 2021

5.8K
Analyzing the Permeability of the Blood-Brain Barrier by Microbial Traversal through Microvascular Endothelial Cells
06:26

Analyzing the Permeability of the Blood-Brain Barrier by Microbial Traversal through Microvascular Endothelial Cells

Published on: February 14, 2020

17.9K

Related Experiment Videos

Last Updated: Apr 12, 2026

High-Throughput Capable Three-Dimensional Tissue Model for Quantification of Electroporation Thresholds
08:23

High-Throughput Capable Three-Dimensional Tissue Model for Quantification of Electroporation Thresholds

Published on: August 19, 2025

699
Psychophysical Tracking Method to Assess Taste Detection Thresholds in Children, Adolescents, and Adults: The Taste Detection Threshold TDT Test
08:52

Psychophysical Tracking Method to Assess Taste Detection Thresholds in Children, Adolescents, and Adults: The Taste Detection Threshold TDT Test

Published on: April 21, 2021

5.8K
Analyzing the Permeability of the Blood-Brain Barrier by Microbial Traversal through Microvascular Endothelial Cells
06:26

Analyzing the Permeability of the Blood-Brain Barrier by Microbial Traversal through Microvascular Endothelial Cells

Published on: February 14, 2020

17.9K

Area of Science:

  • Soil Science
  • Plant Biology
  • Hydrology

Background:

  • The rhizosphere, soil around plant roots, influences water uptake.
  • Root-exuded mucilage affects rhizosphere physical properties, absorbing water but becoming hydrophobic upon drying.

Purpose of the Study:

  • To model and experimentally verify the effect of mucilage concentration on rhizosphere rewetting and water percolation.
  • To investigate if plants use mucilage exudation to control soil hydraulic conductivity and water access.

Main Methods:

  • Development of a percolation model for dry rhizosphere rewetting.
  • Capillary rise experiments utilizing neutron radiography to observe water movement.

Main Results:

  • A critical mucilage concentration was identified, above which the rhizosphere becomes impermeable to water.
  • This critical concentration is dependent on soil particle size.
  • Neutron radiography confirmed water percolation below the critical concentration and blockage above it.

Conclusions:

  • The rhizosphere operates near a percolation threshold, where mucilage concentration critically affects hydraulic conductivity.
  • Mucilage exudation may be a plant strategy for actively managing water availability in the root zone.