Engineering salinity tolerance in plants: progress and prospects

Area of Science:

• Plant Biology
• Agricultural Science
• Biotechnology

Background:

• Soil salinity significantly limits global crop production, presenting a major challenge for plant science.
• Traditional methods for enhancing plant salt tolerance often involve single-gene approaches with potential trade-offs in growth and yield.

Purpose of the Study:

• To review and evaluate novel and cutting-edge approaches for engineering salt tolerance in crop plants.
• To assess the potential of regulatory proteins, transporters, halobiomes, microRNAs, alternative splicing, and gene editing.

Main Methods:

• Literature review and critical evaluation of recent findings.
• Analysis of established and emerging techniques for genetic manipulation.
• Assessment of gene sources from halobiomes for crop improvement.

Main Results:

• Regulatory proteins and transporters are key targets for enhancing salt tolerance.
• Halobiomes represent a valuable resource for salt tolerance genes in glycophytes.
• MicroRNAs, alternative splicing, and gene editing offer new avenues for engineering salt tolerance.

Conclusions:

• A conceptual framework integrating current knowledge of salt stress responses is needed.
• Novel strategies like halobiome gene utilization and CRISPR-based gene editing are essential for developing salt-tolerant crops.
• Combining diverse approaches is vital for sustainable crop production in saline environments.