Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (1): 23-32.DOI: 10.3969/j.issn.1004-1524.2023.01.03

• Crop Science • Previous Articles     Next Articles

Clonging and expression analysis of TaPAT1-2D gene in wheat

DONG Feiyan1,2(), SONG Jinghan1,3, ZHANG Huadong1,2, WU Haotian2, LI Yaqian1,2, LIU Mengwei2, GAO Chunbao1,2, FANG Zhengwu1,*(), LIU Yike2,*()   

  1. 1. MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtza River (Co-Construction by Ministry and Province), College of Agronomy, Yangtze University, Jingzhou 434025, Hubei, China
    2. Hubei Provincial Key Laboratory of Germplasm Innovation and Genetic Improvement of Food Crops, Wheat Disease Biology Research Station on Central China, Ministry of Agriculture and Rural Affairs, Food Crops Institute, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
    3. College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
  • Received:2022-04-06 Online:2023-01-25 Published:2023-02-21

Abstract:

As a plant-specific transcription factor, the GRAS (GIBBERELLIN-INSENSITIVE, repressor of ga1-3 and SCARECROW) gene family plays a vital role in plant growth and stress tolerance. To further explore the gene involved in response to Fusarium head blight of wheat in this family, the research screened out the differentially expressed gene TaPAT1-2D(TraesCS2D02G198200.1) from the Fusarium graminearum spore-induced wheat transcriptome sequencing data, and conducted its full-length cloning, bioinformatics analysis, expression pattern analysis, subcellular localization, and transcription activation studies. The results of bioinformatics analysis showed that the exon sequence of TaPAT1-2D was 1 668 bp, encoded 555 amino acids, and had a molecular weight of around 61.34 ku. Its protein sequence comprised a typical GRAS functional domain and was phylogenetically related to rice OsCIGR2 (LOC_Os07g39470.1). In the promoter region, TaPAT1-2D contained some plant hormone response elements and light-responsive elements including methyl jasmonate response elements, auxin response elements, abscisic acid response elements, Etc. Quantitative real-time PCR results revealed that expression level of TaPAT1-2D gene was up-regulated at 72 h after inoculating with F. graminearum spore liquid in four distinct resistants, indicating that this gene was involved in response to Fusarium head blight. Agrobacterium tumefaciens-mediated transient expression was carried out in tobacco and the result showed that TaPAT1-2D protein was localized in the nucleus and cell membrane. The yeast transcription activation experiments verified that the protein could self-activate transcription. This study laid the foundation for studing TaPAT1-2D gene’s function.

Key words: wheat, GRAS transcription factor, subcellular localization, expression analysis, self-activation

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