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Background Jasmonate-ZIM domain (JAZ) repressors negatively regulate signal transduction of jasmonates, which regulate plant development and immunity. However, no comprehensive analysis of the  JAZ  gene family members has been done in the common fig ( Ficus carica  L.) during fruit development and hormonal treatment. Results In this study, 10 non-redundant fig  JAZ  family genes  (FcJAZs ) distributed on 7 chromosomes were identified in the fig genome. Phylogenetic and structural analysis showed that  FcJAZ  genes can be grouped into 5 classes. All the classes contained relatively complete TIFY and Jas domains. Yeast two hybrid (Y2H) results showed that all FcJAZs proteins may interact with the identified transcription factor, FcMYC2. Tissue-specific expression analysis showed that  FcJAZs  were highly expressed in the female flowers and roots. Expression patterns of  FcJAZs  during the fruit development were analyzed by RNA-Seq and qRT-PCR. The findings showed that, most  FcJAZs  were significantly downregulated from stage 3 to 5 in the female flower, whereas downregulation of these genes was observed in the fruit peel from stage 4 to 5. Weighted-gene co-expression network analysis (WGCNA) showed the expression pattern of  FcJAZs  was correlated with hormone signal transduction and plant-pathogen interaction. Putative  cis -elements analysis of  FcJAZs  and expression patterns of  FcJAZs  which respond to hormone treatments revealed that  FcJAZs  may regulate fig fruit development by modulating the effect of ethylene or gibberellin. Conclusions This study provides a comprehensive analysis of the  FcJAZ  family members and provides information on  FcJAZs  contributions and their role in regulating the common fig fruit development.

Genome-wide analysis of JAZ family genes expression patterns during fig (Ficus carica L.) fruit development and in response to hormone treatment