Fig. 7
From: 6-Methyl-5-hepten-2-one promotes programmed cell death during superficial scald development in pear
The schematic model of this study. Cold storage induces superficial scald development in pear fruit, which is accompanied by a bunch of typical PCD-associated morphological alterations, including plasmolysis, cell shrinkage, cytosolic and nuclear condensation, vacuolar collapse, tonoplast disruption, subcellular organelle swelling, and DNA fragmentation. These phenomena are associated with the alternation in the expression profiles of 24 PCD-related genes. MHO, as a signaling molecule, promotes PCD process, possibly through regulating the expression of PbrGnai1, PbrSOBIR1, PbrACD6, and PbrCNGC1; further study validated that three out of 23 TFs proposedly involved in MHO signaling pathway, including PbrWRKY2, 34, and 39, could interact with the W-box element in the promoter of PbrGnai1 or PbrSOBIR1 and then trigger their transcription