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Home > Archive>Volume 20, Issue 5, 2019 >1289-1300. DOI:10.13430/j.cnki.jpgr.20181210004
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Genome-wide Investigation of WRKY Transcription Factors in Gossypium barbadense and Their Expression Patterns in Response to Verticillium dahliae Infection
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Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain, Ministry of Agriculture/Cotton Research Center of Shandong Academy of Agricultural Sciences, Jinan 250100

Fund Project:

The Open Project of Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain, Ministry of Agriculture (2016KL04); The Agricultural Science and Technology Innovation Project of Shandong Academy of Agricultural Sciences (CXGC2018B01 and CXGC2018E06)

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    Abstract:

    WRKY proteins, as one of the most important transcription factor families in plant, play important roles involved in many biological processes. However, studies of WRKY proteins in Gossypium barbadense remain scare. By deploying bioinformatic methods to perform a genome-wide characterization in G. barbadense genome, 180 WRKY transcription factors were identified. According to their structural features and topology of the phylogenetic tree, the GbWRKY genes were classified into three major groups (I-III). In addition, group II is further classified into five subgroups (IIa-IIe). The GbWRKY genes distributed unevenly on the 26 chromosomes. Analysis of gene duplication events demonstrated that the expansion of GbWRKY genes is mainly due to whole genome duplication and segmental duplication events. 61 GbWRKY genes showed significantly differential expression under Verticillium dahliae infection, implying that they might play important roles in interaction to V. dahlia infection. Therefore, this study provided the structure, evolution and expression pattern of GbWRKY genes, which will help further characterizing the functions of GbWRKY genes in Gossypium barbadense.

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History
  • Received:December 10,2018
  • Revised:May 23,2019
  • Adopted:February 11,2019
  • Online: September 17,2019
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