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Related Concept Videos

Responses to Drought and Flooding02:41

Responses 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.
Tonicity in Plants01:20

Tonicity in Plants

Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
Tonicity in Plants00:53

Tonicity in Plants

Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity delimits the magnitude and direction of osmosis and results in three possible scenarios that alter the volume of a cell: hypertonicity, hypotonicity, and isotonicity. Due to differences in structure and physiology, tonicity of plant cells is different from that of animal cells in some scenarios.Plants and Hypotonic EnvironmentsUnlike animal cells,...
Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
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Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
Responses to Salt Stress02:02

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.

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Related Experiment Video

Updated: Jun 13, 2026

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce (Lactuca sativa) Germplasm Collections
06:35

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce (Lactuca sativa) Germplasm Collections

Published on: April 17, 2015

Dehydration tolerance in plants.

Melvin J Oliver1, John C Cushman, Karen L Koster

  • 1USDA-ARS Plant Genetics Research Unit, University of Missouri, Columbia, MO, USA.

Methods in Molecular Biology (Clifton, N.J.)
|April 14, 2010
PubMed
Summary
This summary is machine-generated.

Dehydration tolerance in plants, crucial for drought survival, is being understood through extremophile plants. Studying these reveals key mechanisms for improving crop drought tolerance.

Related Experiment Videos

Last Updated: Jun 13, 2026

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce (Lactuca sativa) Germplasm Collections
06:35

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce (Lactuca sativa) Germplasm Collections

Published on: April 17, 2015

Area of Science:

  • Plant Physiology
  • Molecular Biology
  • Biochemistry

Background:

  • Dehydration tolerance is a critical but understudied aspect of plant drought tolerance.
  • Most plants perish at leaf water potentials between -5 and -10 MPa, unlike extremophiles surviving extreme dehydration.

Purpose of the Study:

  • To define and outline methods for assessing plant dehydration tolerance.
  • To explore the metabolic, mechanical, and genetic responses contributing to dehydration tolerance.

Main Methods:

  • Review of existing literature on plant dehydration tolerance mechanisms.
  • Analysis of biochemical components like carbohydrates, LEA proteins, HSPs, and ROS pathways.
  • Discussion of gene expression and novel transcription factors involved in tolerance.

Main Results:

  • Dehydration tolerance mechanisms involve metabolic and mechanical adjustments at the cellular level.
  • Gene expression, specific proteins (LEA, HSPs), carbohydrates, and ROS scavenging are key biochemical aspects.
  • New model systems are accelerating the understanding of dehydration tolerance.

Conclusions:

  • Significant advances are being made in understanding plant dehydration tolerance.
  • Further research, aided by new model systems, will enhance strategies for improving crop drought tolerance.