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Genome-wide identification of PSKR genes in wheat and differential expression under abiotic stress conditions

Summary

Scientists identified 149 genes related to phytosulfokine receptors (PSKR) in wheat that help plants respond to environmental stresses like drought, salt, cold, and heat. These genes are spread across wheat’s chromosomes and contain regulatory elements that control their expression in response to various stresses and plant hormones. The study provides important genetic resources for developing wheat varieties that are more resistant to environmental stress, which is crucial for maintaining crop productivity in changing climate conditions.

Background

Phytosulfokine (PSK) is an important plant growth factor regulating stress responses. PSKR gene family plays a crucial role in the PSK signaling pathway, but few reports exist in wheat. This study addresses the gap in understanding PSKR genes in wheat through genome-wide identification and characterization.

Objective

To systematically identify and characterize PSKR genes in wheat, analyze their evolutionary relationships, structural characteristics, and stress regulation mechanisms. The study aims to provide key gene resources and theoretical basis for molecular breeding for stress resistance in wheat.

Results

A total of 149 TaPSKR genes were identified distributed unevenly across 21 wheat chromosomes, with enrichment on chromosomes 6A, 6B, and 6D. Phylogenetic analysis showed 75.2% of genes clustered with monocotyledons. Expression profiles demonstrated genes were influenced by various abiotic stressors and hormones, with qRT-PCR confirming differential expression patterns under stress conditions.

Conclusion

TaPSKR genes participate in abiotic stress response and phytohormone regulation pathways. The comprehensive analysis provides key gene resources and theoretical basis for understanding PSKR signaling pathways and developing stress-resistant wheat varieties through molecular breeding.
  • Published in:Frontiers in Plant Science,
  • Study Type:Genome-wide identification and expression analysis,
  • Source: 10.3389/fpls.2025.1582433, PMID: 41019749
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