Plant Responses to Abiotic Stress Factors

Plants encounter diverse abiotic stressors such as drought, salinity, extreme temperatures and flooding that challenge growth and productivity. They deploy interconnected mechanisms at multiple levels. Morphologically, root architecture can be altered to enhance water uptake or limit toxic ion absorption, and leaf morphology may change to reduce transpiration. Physiologically, stomatal conductance is modulated to balance carbon fixation and water loss, while osmotic adjustment through synthesis of compatible solutes maintains cell turgor under dehydration or saline conditions. Biochemically, accumulation of antioxidants and activation of reactive oxygen species scavenging systems protect cellular components from oxidative damage. At the molecular level, stress perception through membrane-bound sensors triggers signalling cascades involving calcium fluxes, mitogen-activated protein kinases and phytohormones such as abscisic acid, culminating in gene expression changes that encode transporters, protective proteins and enzymes. Advances in transcriptomics, proteomics and metabolomics have elucidated networks of stress-responsive genes and metabolites, informing breeding and biotechnological strategies. These insights are vital for securing agricultural yields and sustaining ecosystems under climate change, supporting the development of resilient crop varieties and optimised management practices.

Research from Nature Portfolio

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Plant Responses to Abiotic Stress Factors publication trend

The graph below shows the total number of articles in plant responses to abiotic stress factors across all publications each year (not limited to Nature Index journals).

Technical terms

Osmotic adjustment: Accumulation of osmolytes such as proline to stabilise cellular water balance under dehydration or salinity.

Reactive oxygen species (ROS): Highly reactive molecules generated under stress that can damage cellular structures but are detoxified by antioxidant systems.

Stomatal conductance: The regulation of gas exchange through stomata, balancing CO₂ uptake and water loss.

Ion homeostasis: The maintenance of intracellular ion concentrations via transporters and compartmentalisation to prevent toxicity.

References

1. Molecular and physiological responses to salt stress in salinity-sensitive and tolerant Hibiscus rosa-sinensis cultivars. Molecular Horticulture (2023).
2. Testing the suitability for coastal green areas of three ornamental shrub species through physiological responses to the saline nebulization. Urban Forestry & Urban Greening (2023).
3. Molecular and Physiological Mechanisms to Mitigate Abiotic Stress Conditions in Plants. Life (2022).