Apoplast Washing Fluid
Apoplast Washing Fluid - Related Videos
09:38
Isolation and Purification of Plant Extracellular Vesicles from Arabidopsis Leaves Using an Optimized Apoplastic Wash Collection Method
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2026
This protocol describes an optimized method for isolating extracellular vesicles (EVs) from Arabidopsis thaliana leaves to support downstream molecular and functional analyses.
02:28
Extraction of Apoplastic Bacteria Using a Syringe-Based Pressure Method
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2025
Source: Rufián, J. S., et al, Single-Cell Analysis of the Expression of Pseudomonas syringae Genes within the Plant Tissue. J. Vis. Exp. (2022)This video demonstrates a syringe-based pressure method for extracting apoplastic bacteria, which proliferate and form microcolonies within the apoplast, the intercellular space between plant cells. The method yields debris-free bacterial samples suitable for downstream single-cell analysis.
02:06
The Apoplast and Symplast
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2026
Plant growth depends on its ability to take up water and dissolved minerals from the soil. The root system of every plant is equipped with the necessary tissues to facilitate the entry of water and solutes. The plant tissues involved in the transport of water and minerals have two major compartments - the apoplast and the symplast. The apoplast includes everything outside the plasma membrane of living cells and consists of cell walls, extracellular spaces, xylem, phloem, and tracheids. The...
10:26
The Infiltration-centrifugation Technique for Extraction of Apoplastic Fluid from Plant Leaves Using Phaseolus vulgaris as an Example
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Cited by 100 •
2014
This protocol details the optimized extraction of apoplast washing fluid from plant leaves, using French bean plants (Phaseolus vulgaris) as a model example.
00:52
Washing, Drying, and Ignition of Precipitates
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2024
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
FAQs
The recovered fluid samples the chemical conditions surrounding plant cells rather than the contents of the cells themselves. Its proteins, metabolites, hormones, ions, and signaling molecules can therefore indicate how substances move, accumulate, or participate in communication outside the plasma membrane. Comparing these components helps connect extracellular chemistry with changes in plant physiology.
Vacuum infiltration helps introduce a solution into the tissue’s extracellular spaces, allowing that solution to displace or collect material within the apoplast. Centrifugation then separates the infiltrated tissue from the displaced fluid for recovery. Using both stages supports collection from internal extracellular spaces while the procedure aims to minimize cellular damage that could alter the sample.
Damage to plant cells can release intracellular substances into the recovered fluid, making the sample less representative of the apoplast. The collection procedure is therefore designed to minimize such injury. This matters when researchers interpret proteins, metabolites, hormones, ions, or signaling molecules as evidence of extracellular processes rather than unintended leakage from damaged cells.
Infection and environmental stress can change the composition of the extracellular plant environment. Measuring corresponding changes in Apoplast Washing Fluid can reveal shifts in soluble proteins, metabolites, hormones, ions, or signaling molecules. These patterns help researchers examine how plants alter defense responses, cellular communication, and stress signaling under different biological or environmental conditions.
A typical workflow begins by infiltrating plant tissue with a solution under vacuum. The treated tissue is then centrifuged so fluid displaced from the apoplastic spaces can be collected. Researchers can analyze the recovered sample for soluble proteins, metabolites, hormones, ions, and signaling molecules, while evaluating the procedure in light of its goal of minimizing cellular damage.
This approach is useful when the research question concerns processes occurring outside plant cells. It can support studies of nutrient movement, defense responses, pathogen interactions, stress signaling, and extracellular biochemical communication. Because the fluid composition can change during infection or environmental stress, it also provides a way to compare extracellular responses across physiological conditions.