Genome-Wide Identification, Expression Profile Of The Tify Gene Family In Brassica Oleracea Var. Capitata, And Their Divergent Response To Various Pathogen Infections And Phytohormone Treatments
文献类型: 外文期刊
作者: Liu, X; Zhao, CB; Yang, LM; Zhang, YY; Wang, Y; Fang, ZY; Lv, HH
作者机构:
关键词: Brassica Oleracea; Tify; Jaz; Phytohormone; Disease Resistance
期刊名称: GENES
ISSN:
年卷期: 2020 年 11 卷 2 期
页码:
收录情况: JCR(2021版)
摘要: TIFY, a plant-specific gene family with the conserved motif TIF[F/Y]XG, plays important roles in various plant biological processes. Here, a total of 36 TIFY genes were identified in the Brassica oleracea genome and classified into JAZ (22 genes), TIFY (7 genes), ZML (5 genes), and PPD (2 genes) subfamilies based on their conserved motifs, which were distributed unevenly across nine chromosomes with different lengths (339-1077 bp) and exon numbers (1-8). Following phylogenetic analysis with A. thaliana and B. rapa TIFY proteins, ten clades were obtained. The expression of these TIFY genes was organ-specific, with thirteen JAZ genes and two PPD genes showing the highest expression in roots and leaves, respectively. More importantly, the JAZs showed divergent responses to various pathogen infections and different phytohormone treatments. Compared with the susceptible line, most JAZs were activated after Plasmodiophora brassicae infection, while there were both induced and inhibited JAZs after Fusarium oxysporum or Xanthomonas campestris infection in the resistance line, indicating their probably distinct roles in disease resistance or susceptibility. Further, the JAZs were all upregulated after MeJA treatment, but were mostly downregulated after SA/ET treatment. In summary, these results contribute to our understanding of the TIFY gene family, revealing that JAZs may play crucial and divergent roles in phytohormone crosstalk and plant defense.
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