Drought Stress
Drought Stress - Related Videos
02:41
Responses to Drought and Flooding
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2020
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. Under normal conditions, water taken up by the plant evaporates from leaves and other parts in a process called transpiration. In times of drought stress, water that evaporates by transpiration far exceeds the water absorbed from the soil, causing plants to wilt. The general plant response to drought stress is the synthesis of hormone...
09:39
The Trier Social Stress Test Protocol for Inducing Psychological Stress
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Cited by 251 •
2011
This article describes a protocol for inducing psychological stress in participants, which enables researchers to measure psychological, physiological and neuroendocrine responses to stress within single participants or between groups.
08:14
Modeling Social Stress
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2023
Stress negatively affects our quality of life. In particular, some individuals experience social stress when placed in a social environment that they are unfamiliar with or have difficulty adjusting to. Since it is hard to examine mechanisms of social stress in humans, modeling this condition in animals may help scientist in developing new therapies for treating this commonly encountered problem. This science education video begins by discussing the known anatomy and physiology behind stress...
10:16
Psychophysiological Stress Assessment Using Biofeedback
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Cited by 9 •
2009
In this video we will describe one method of assessing person's psychophysiological reaction to stress using biofeedback. We will also present general guidelines for treatment planning.
14:53
Stress-Strain Characteristics of Aluminum
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA Aluminum is one of the most abundant materials in our lives, as it is omnipresent in everything from soda cans to airplane components. Its widespread use is relatively recent (1900AD), primarily because aluminum does not occur in its free state, but rather in combination with oxygen and other elements, often in the form of Al2O3. Aluminum was originally obtained from bauxite mineral deposits...
FAQs
Reduced water availability promotes accumulation of abscisic acid, a plant hormone that coordinates water-conservation responses. One major effect is stomatal closure, which limits water loss from leaves but also influences gas exchange and photosynthetic activity. Abscisic acid signaling therefore links cellular water status with whole-plant regulation during changing soil moisture conditions.
As soil dries, its reduced water potential makes water uptake and transport more difficult. This limits the movement of water from the soil into roots and through the plant, affecting tissues that depend on continued hydration. The resulting transport constraint helps explain why drought stress can influence growth, cellular function, and survival even before prolonged damage develops.
Extended water limitation can increase oxidative damage while also impairing photosynthesis. These effects reduce the plant’s ability to maintain normal cellular activity and capture energy, creating a stronger physiological burden than short-term water conservation alone. Studying this progression helps distinguish early adjustment responses from consequences associated with persistent or severe drought conditions.
Research commonly focuses on root development, water-use efficiency, gene expression, photosynthesis, and species-specific responses. Root development can indicate how plants adjust below ground, whereas water-use efficiency addresses productivity relative to water use. Gene-expression patterns and photosynthetic changes provide additional evidence of cellular regulation and functional impairment under limited water availability.
Findings from drought stress studies can guide crop improvement by identifying plant responses associated with maintaining productivity under variable water conditions. Researchers can use information about water-use efficiency, root development, gene expression, and photosynthetic performance to understand which traits support better adaptation. This knowledge helps connect biological mechanisms with agricultural productivity goals.
Species do not necessarily respond to changing water availability in the same way, so drought stress research supports comparisons of adaptation across plants and ecosystems. Information about species responses, growth effects, and survival can improve ecological forecasting under increasingly variable water conditions. It also helps researchers assess how altered moisture availability may influence biological productivity.