ArticleBMC plant biology2024
Genome-wide identification, expression analysis of WRKY transcription factors in Citrus ichangensis and functional validation of CiWRKY31 in response to cold stress.
Article in BMC plant biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Genome-wide identification of the WRKY gene family in apricot (Prunus armeniaca L.) and functional characterization of PaWRKY57 in salt stress tolerance.BMC plant biology · 2026Article
- Functional Characterization and Potential Regulatory Role ofInternational journal of molecular sciences · 2026Article
- Genome‑wide analysis of the CaWRKY transcription factors reveals CaWRKY28 as a candidate gene for cold tolerance breeding in Coffea arabica L.BMC plant biology · 2026Article
- WRKY27-RAP2.7 Regulatory Module Promotes Cold Tolerance via Modulation of Lignin Biosynthesis and Redox Homeostasis by Regulating Cinnamyl Alcohol Dehydrogenase 7 and Glutathione S-Transferase F6.Plant biotechnology journal · 2026Article
- WRKY27-Horticulture research · 2025Article
- Physiological and Transcriptomic Analysis of Two Types of Hami Melons in Low-Temperature Storage.Plants (Basel, Switzerland) · 2025Article
- Identification and functional characterization of AsWRKY9, a WRKY transcription factor modulating alliin biosynthesis in garlic (Allium sativum L.).BMC biology · 2025Article
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7 authors.
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Abstract
backgroundIchang papeda (Citrus ichangensis), a wild perennial plant of the Rutaceae family, is a cold-hardy plant. WRKY transcription factors are crucial regulators of plant growth and development as well as abiotic stress responses. However, the WRKY genes in C. ichangensis (CiWRKY) and their expression patterns under cold stress have not been thoroughly investigated, hindering our understanding of their role in cold tolerance.
resultsIn this study, a total of 52 CiWRKY genes identified in the genome of C. ichangensis were classified into three main groups and five subgroups based on phylogenetic analysis. Comprehensive analyses of motif features, conserved domains, and gene structures were performed. Segmental duplication plays a significant role in the CiWRKY gene family expansion. Cis-acting element analysis revealed the presence of various stress-responsive elements in the promoters of the majority of CiWRKYs. Gene ontology (GO) analysis and protein-protein interaction predictions indicate that the CiWRKYs exhibit crucial roles in regulation of both development and stress response. Expression profiling analysis demonstrates that 14 CiWRKYs were substantially induced under cold stress. Virus-induced gene silencing (VIGS) assay confirmed that CiWRKY31, one of the cold-induced WRKYs, functions positively in regulation of cold tolerance.
conclusionSequence and protein properties of CiWRKYs were systematically analyzed. Among the 52 CiWRKY genes 14 members exhibited cold-responsive expression patterns, and CiWRKY31 was verified to be a positive regulator of cold tolerance. These findings pave way for future investigations to understand the molecular functions of CiWRKYs in cold tolerance and contribute to unravelling WRKYs that may be used for engineering cold tolerance in citrus.
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