ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Bioinformatics
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1582433
This article is part of the Research TopicExploring Structural Variants in Plant Pangenomics: Innovations and ApplicationsView all 7 articles
Genome-wide identification of PSKR genes in wheat and differential expression under abiotic stress conditions
Provisionally accepted
- 1Sichuan University of Science and Engineering, Zigong, China
- 2Wuliangye Yibin Co., Ltd, Yibin, China
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Phytosulfokine (PSK) is an important plant growth factor regulating plant stress response, PSKR gene family plays an important role in the PSK signaling pathway, but there are few reports in whea (Triticum aestivum L.). In this study, 149 TaPSKR genes were identified by using hidden Markov models (HMMs) and sequence homology, and their evolutionary relationship, structural characteristics and stress regulation mechanism were systematically analyzed. Our results indicated that genes were unevenly distributed across 21 chromosomes of the wheat genome. Phylogenetic tree and conserved motif analysis revealed that the gene motifs, domains, and structures were relatively conserved, and 75.2% of TaPSKR genes clustered in one clade with monocotyledons. Chromosome distribution showed that genes were enriched in chromosomes 6A (20.13%), 6B (16.11%) and 6D (18.79%). A total of 6,463 cis-acting elements were discovered in the promoter regions of PSKR genes, indicating that these genes are regulated by various developmental, environmental, and hormonal factors, as well as light responses. Expression profile results demonstrated that these genes were influenced by various abiotic stressors, such as PEG6000, salt, cold, heat, and different hormones, including gibberellic acid, jasmonic acid, abscisic acid, 6-benzylaminopurine, and salicylic acid. Additionally, quantitative real-time PCR was performed to further confirm the transcriptomic data. TaPSKR genes may participated in abiotic stress response and phytohormone regulation pathway, which provided key gene resources and theoretical basis for the analysis of PSKR signaling pathway and molecular breeding for stress resistance in wheat.
Keywords: wheat, TaPSKR genes, abiotic stress, expression profile, qRT-PCR
Received: 24 Feb 2025; Accepted: 26 Aug 2025.
Copyright: © 2025 Ma, Wei, Zheng, Su and Zhao. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Zhenbing Ma, Sichuan University of Science and Engineering, Zigong, China
Dong Zhao, Wuliangye Yibin Co., Ltd, Yibin, China
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