Genome-wide analysis reveals transcription factors regulated by spider-mite feeding in cucumber (Cucumis sativus)

Jun He*, Harro J. Bouwmeester, Marcel Dicke, Iris F. Kappers*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

To gain insight into the regulatory networks that underlie the induced defense in cucumber against spider mites, genes encoding transcription factors (TFs) were identified in the cucumber (Cucumis sativus) genome and their regulation by two-spotted spider mite (Tetranychus urticae) herbivory was analyzed using RNA-seq. Of the total 1212 annotated TF genes in the cucumber genome, 119 were differentially regulated upon spider-mite herbivory during a period of 3 days. These TF genes belong to different categories but the MYB, bHLH, AP2/ERF and WRKY families had the highest relative numbers of differentially expressed genes. Correlation analysis of the expression of TF genes with defense-associated genes during herbivory and pathogen infestation, and in different organs resulted in the putative identification of regulators of herbivore-induced terpenoid and green-leaf-volatile biosynthesis. Analysis of the cis-acting regulatory elements (CAREs) present in the promoter regions of the genes responsive to spider-mite feeding revealed potential TF regulators. This study describes the TF genes in cucumber that are potentially involved in the regulation of induced defense against herbivory by spider mites.

Original languageEnglish
Article number1014
Number of pages16
JournalPlants
Volume9
Issue number8
DOIs
Publication statusPublished - Aug 2020

Keywords

  • Cis-acting regulatory elements
  • Cucumber
  • Promoter
  • Spider mite
  • Transcription factor

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