Plant Adaptation to Salinity: Physiological Pathways and Prospects for Crop Improvement-A Review

Area of Science:

• Agricultural Science
• Plant Physiology
• Molecular Biology

Background:

• Soil salinity is a significant abiotic stress limiting crop productivity globally.
• Salt stress impacts crops through osmotic stress, ion toxicity, and oxidative damage.
• Developing salt-tolerant crops is crucial for food security.

Purpose of the Study:

• To synthesize current knowledge on plant responses to salt stress.
• To review molecular and physiological mechanisms underlying salt tolerance.
• To compare strategies for enhancing crop salinity tolerance.

Main Methods:

• Literature review integrating mechanistic and deployment-focused insights.
• Synthesis of physiological responses: osmotic adjustment, ion transport, photosynthesis, ROS detoxification, phytohormones.
• Summary of molecular regulation: gene expression, transcription factors, non-coding RNAs.

Main Results:

• Salt tolerance involves complex physiological and molecular networks.
• Transcriptional and post-transcriptional regulation plays a vital role.
• Multiple strategies including breeding, transgenics, genome editing, and epigenetics are being explored.

Conclusions:

• Integrated understanding of salt stress responses is essential for advancing agriculture.
• Translating mechanistic insights into durable field performance requires further research.
• Future priorities include optimizing breeding and biotechnological approaches for salinity tolerance.