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Updated: Mar 15, 2026

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections

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From Shared Mechanisms to Precision Breeding: Engineering Cold and Drought Cross-Tolerance in Crops.

Xue Yang¹, Zi-Chang Jia¹, Yan Liu²

¹State Key Laboratory of Green Pesticide, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China.

International Journal of Molecular Sciences

|March 14, 2026

Summary

Plants can develop cross-tolerance to cold and drought stress through shared biological pathways. Understanding these mechanisms aids in breeding crops with enhanced resilience to multiple environmental challenges.

Keywords:

cold stress cross-tolerance drought stress genome editing molecular design breeding signaling network

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Area of Science:

Plant Science
Stress Physiology
Agricultural Biotechnology

Background:

Low temperature and drought are major abiotic stresses limiting global crop yields.
Their combined occurrence presents compounded challenges to agricultural sustainability.
Cross-tolerance, where one stress primes resistance to another, is increasingly recognized.

Purpose of the Study:

To review recent advances in understanding cold-drought cross-talk mechanisms.
To explore the translation of these insights into precision breeding strategies.
To highlight future directions for multi-stress tolerant crop development.

Main Methods:

Review of current literature on plant stress signaling and regulation.
Analysis of molecular mechanisms including hormonal signaling and transcriptional reprogramming.
Discussion of breeding techniques like genome editing and allele mining.

Main Results:

Cold-drought cross-talk involves shared signaling pathways, hormonal coordination (e.g., abscisic acid), and transcriptional regulators (DREB/CBF modules).
Mechanisms extend to epigenetic modifications and biomolecular condensates for regulatory memory.
These insights are applicable to developing multi-stress tolerant crops.

Conclusions:

Understanding cold-drought cross-talk provides a foundation for breeding resilient crops.
Precision breeding strategies can accelerate the development of varieties with stable multi-stress tolerance.
Integrating multi-omics and data-driven approaches is key for future crop design.