Fig 7.

Proposed regulatory model for the role of transcription factors in persimmon fruit post-deastringency softening. Transcripts of DkERF8/16/19 (Wang et al., 2017) and DkNAC9 are activated by high-CO₂, but reduced when 1-methylcyclopropene (1-MCP) is also present. DkERF8/16/19 are involved in regulation of DkXTH9, which is related to cell wall metabolism (Wang et al., 2017). DkNAC9 is a direct activator of the DkEGase1 promoter, and DkERF8 and DkERF16 can interact with DkNAC9 to enhance this regulation. Red lines indicate new data from the current study and grey lines indicate previously published results.