Gene Function Dynamics in Plant Stress Responses

Plants encounter a multitude of environmental stresses—drought, salinity, temperature extremes and pathogen attack—that jeopardise growth and yield. The ability to perceive and adapt involves a dynamic gene regulatory network encompassing sensor kinases, transcription factors, signalling molecules and effector proteins. Rapid modulation of transcript abundance, alternative splicing, chromatin remodelling and post-translational modifications orchestrates physiological adjustments such as osmolyte accumulation, ionic balance and reactive oxygen species detoxification. Small RNA pathways and epigenetic marks further fine-tune gene activity, enabling memory and cross-tolerance. High-throughput omics have uncovered large gene families, including those with conserved yet uncharacterised domains, which often mediate stress resilience. Some genes act as master switches controlling cascades of downstream targets, while others execute specific protective functions at the membrane or organelle level. Unravelling this complexity is vital for breeding stress-adapted varieties, with direct implications for global food security under changing climates.

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Gene Function Dynamics in Plant Stress Responses publication trend

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Technical terms

Domain of Unknown Function (DUF): A conserved protein region lacking a defined biochemical role, often implicated in stress response pathways.

Transcriptome: The complete set of RNA transcripts expressed by the genome under specific conditions.

Abiotic stress: Non-living environmental factors such as salinity, drought or temperature extremes that adversely affect plants.

Antioxidant enzyme: A protein that mitigates oxidative damage by detoxifying reactive oxygen species.

Phylogenetic analysis: A comparative method that reconstructs evolutionary relationships among gene family members.

References

1. Unraveling the Diverse Roles of Neglected Genes Containing Domains of Unknown Function (DUFs): Progress and Perspective. International Journal of Molecular Sciences (2023).
2. Genome-wide characterization of the soybean DOMAIN OF UNKNOWN FUNCTION 679 membrane protein gene family highlights their potential involvement in growth and stress response. Frontiers in Plant Science (2023).
3. Overexpression of OsDUF6 increases salt stress tolerance in rice. BMC Plant Biology (2024).