Plasticity and adaptive architecture of roots for enhanced salinity tolerance in crops
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View abstract on PubMed
Summary
This summary is machine-generated.Plants adapt to salty soils through root plasticity, involving gene regulation, suberin barriers, and beneficial microbes. This research explores root system architecture (RSA) and microbiome engineering for salt-resilient crops.
Area Of Science
- Plant Biology
- Agronomy
- Genetics
Background
- Soil salinization threatens global food security, impacting over a billion hectares of arable land.
- Plant roots are crucial for sensing and adapting to salinity stress via structural and functional plasticity.
Purpose Of The Study
- To review recent advances in root adaptations to salinity stress.
- To elucidate mechanisms of plant salinity resilience, focusing on root system architecture (RSA), suberin biosynthesis, hormonal regulation, and microbiome interactions.
Main Methods
- Literature review integrating studies on RSA dynamics, gene regulation (MYB, NAC, WRKY), hormonal signaling (ABA, auxin, ethylene), suberin biosynthesis, and beneficial microbial interactions.
- Analysis of molecular and genetic factors controlling root development and barrier formation.
- Exploration of multi-omics and CRISPR-based tools for crop improvement.
Main Results
- Key genes and regulatory networks, including MYB, NAC, and WRKY transcription factors, coordinate root growth and suberin barrier formation under salt stress.
- Suberin acts as a dynamic, ion-selective barrier influenced by hormonal crosstalk and lipid metabolism.
- Beneficial microbes (e.g., Azospirillum, Bacillus, AM fungi) enhance salt tolerance by modulating plant hormones, antioxidant systems, and ion homeostasis.
Conclusions
- Root system plasticity is a complex trait regulated by molecular pathways, hormonal signaling, and rhizosphere ecology.
- Engineering salt-resilient root ideotypes can be achieved by integrating multi-omics, gene editing, and microbiome engineering.
- A conceptual framework is proposed for developing next-generation crops with enhanced productivity in saline environments.
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