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The CCHC-type zinc finger proteins (CCHC-ZFPs) play versatile roles in plant growth, development and adaptation to the environment. However, little is known about functions of  CCHC-ZFP  gene family memebers in  Triticum aestivum . In the present study, we identified a total of 50  TaCCHC-ZFP  genes from the 21 wheat chromosomes, which were phylogenetically classified into eight groups based on their specific motifs and gene structures. The 43 segmentally duplicated  TaCCHC-ZFP  genes were retrieved, which formed 36 segmental duplication gene pairs. The collinearity analyses among wheat and other eight mono/dicots revealed that no gene pairs were found between wheat and the three dicots. The promoter analyses of the  TaCCHC-ZFP  genes showed that 636 environmental stress-responsive and phytohormone-responsive  cis -elements. The gene ontology enrichment analysis indicated that all the  TaCCHC-ZFP  genes were annotated under nucleic acid binding and metal ion binding. A total of 91 MicroRNA (miRNA) binding sites were identified in 34  TaCCHC-ZFP  genes according to the miRNA target analysis. Based on the public transcriptome data, the 38  TaCCHC-ZFP  genes were identified as differentially expressed gene. The expression profiles of 15  TaCCHC-ZFP  genes were verified by the quantitative real-time PCR assays, and the results showed that these genes were responsive to drought or heat treatments. Our work systematically investigated the gene structures, evolutionary features, and potential functions of  TaCCHC-ZFP  genes. It lays a foundation for further research and application of  TaCCHC-ZFP  genes in genetic improvement of  T. aestivum .

frontiers in plant science

Comprehensive Genome-Wide Identification, Characterization, and Expression Analysis of CCHC-Type Zinc Finger Gene Family in Wheat (Triticum aestivum L.)