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Water and Mineral Acquisition

Water and Mineral Acquisition

Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.

Short-distance Transport of Resources

Short-distance Transport of Resources

Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.

The Apoplast and Symplast

The Apoplast and Symplast

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...

Xylem and Transpiration-driven Transport of Resources

Xylem and Transpiration-driven Transport of Resources

The xylem of vascular plants distributes water and dissolved minerals that are taken up by the roots to the rest of the plant. The cells that transport xylem sap are dead upon maturity, and the movement of xylem sap is a passive process.

Diffusion

Diffusion

Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...

Diffusion

Diffusion

Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...

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Related Experiment Video

Updated: Jun 24, 2026

In vivo and In vitro Infection of Potato Roots with Plant Parasitic Nematodes for the Assessment of Induced Structural Changes

In vivo and In vitro Infection of Potato Roots with Plant Parasitic Nematodes for the Assessment of Induced Structural Changes

Published on: February 28, 2025

Movement of potato root diffusate through soil.

D Rawsthorne, B B Brodie

Journal of Nematology

|March 18, 2009

Summary

This summary is machine-generated.

Potato root diffusate (PRD) influences nematode egg hatching in soil up to 50 cm from the roots. This study tracked PRD movement using Globodera rostochiensis egg hatch as an indicator.

Keywords:

Globodera rostochiensis hatch potato root diffusate

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Agrobacterium tumefaciens and Agrobacterium rhizogenes-Mediated Transformation of Potato and the Promoter Activity of a Suberin Gene by GUS Staining

Agrobacterium tumefaciens and Agrobacterium rhizogenes-Mediated Transformation of Potato and the Promoter Activity of a Suberin Gene by GUS Staining

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Last Updated: Jun 24, 2026

In vivo and In vitro Infection of Potato Roots with Plant Parasitic Nematodes for the Assessment of Induced Structural Changes

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Published on: February 28, 2025

Plant-Microbe Interaction: Transcriptional Response of Bacillus Mycoides to Potato Root Exudates

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Agrobacterium tumefaciens and Agrobacterium rhizogenes-Mediated Transformation of Potato and the Promoter Activity of a Suberin Gene by GUS Staining

Agrobacterium tumefaciens and Agrobacterium rhizogenes-Mediated Transformation of Potato and the Promoter Activity of a Suberin Gene by GUS Staining

Published on: March 29, 2019

Area of Science:

Plant-nematode interactions
Soil science
Agronomy

Background:

Potato root diffusate (PRD) is known to stimulate the hatching of Globodera rostochiensis eggs.
Understanding the spatial extent of PRD influence is crucial for managing potato cyst nematodes.

Purpose of the Study:

To determine the movement and concentration gradient of potato root diffusate (PRD) in soil.
To assess the impact of PRD on Globodera rostochiensis egg hatching at varying distances and depths from potato roots.

Main Methods:

Used Globodera rostochiensis egg hatch as a bioindicator for PRD.
Placed porous bags containing cysts at different distances (up to 50 cm) and depths from potato roots.
Restricted potato root growth using nylon mesh to isolate the root zone.

Main Results:

Significantly greater egg hatch was observed up to 50 cm laterally from potato roots compared to fallow soil.
A concentration gradient of PRD was detected, decreasing with increasing lateral and vertical distance from the root zone.
Egg hatch after 5 weeks was not attributable to PRD, suggesting a temporal limitation.

Conclusions:

Potato root diffusate can influence nematode behavior in the soil environment at considerable distances from the host plant.
The findings provide insights into the spatial dynamics of plant-parasitic nematode attraction and hatching.
Management strategies for potato cyst nematodes may need to consider the broader soil area influenced by PRD.