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Related Concept Videos

Responses to Salt Stress02:02

Responses to Salt Stress

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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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Key Elements for Plant Nutrition02:35

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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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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.
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Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
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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.
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Unveiling Salt Tolerance Mechanisms in Plants: Integrating the KANMB Machine Learning Model With Metabolomic and

Shoukun Chen1,2,3, Hao Zhang1,2, Shuqiang Gao1,2

  • 1State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, 100081, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|April 26, 2025
PubMed
Summary

A new machine learning model identified 226 salt stress biomarkers in Spartina alterniflora. Overexpressing the MYB gene SaMYB35 in rice enhanced salt tolerance, offering a tool for breeding resilient crops.

Keywords:
Spartina alternifloraKANMBmetabolomicsalt tolerancetranscriptomic

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Area of Science:

  • Plant Science
  • Genetics
  • Biotechnology

Background:

  • Salt stress severely impacts cereal crop yields, particularly in coastal areas.
  • Developing salt-tolerant crops is crucial for food security.
  • Innovative methods are needed to identify genetic resources for crop improvement.

Purpose of the Study:

  • To introduce a novel machine learning model (KANMB) for analyzing multi-omics data.
  • To identify metabolic biomarkers associated with salt stress tolerance.
  • To investigate the role of MYB genes in plant salt tolerance.

Main Methods:

  • Utilized a machine learning model (KANMB) to analyze integrated metabolomic and transcriptomic data from Spartina alterniflora under varying NaCl concentrations.
  • Performed co-expression analysis to identify key regulatory genes.
  • Overexpressed the identified MYB gene (SaMYB35) in rice (ZH11) to assess its effect on salt tolerance.

Main Results:

  • Identified 226 metabolic biomarkers linked to salt stress responses.
  • Discovered that the MYB gene SaMYB35 regulates the flavonoid biosynthesis pathway under salt stress.
  • Overexpression of SaMYB35 in rice led to increased flavonoid content and enhanced salt tolerance.

Conclusions:

  • The study provides a valuable genetic toolkit for breeding salt-tolerant cereal varieties.
  • Machine learning accelerates biomarker discovery for stress resilience in non-model plants.
  • SaMYB35 is a promising candidate gene for enhancing crop salt tolerance.