Role of the<scp>KNOTTED1‐LIKE HOMEOBOX</scp>protein (<scp>KD1</scp>) in regulating abscission of tomato flower pedicels at early and late stages of the process

The KNOTTED1-LIKE HOMEOBOX PROTEIN1 (KD1) gene is highly expressed in flower and leaf abscission zones (AZs), KD1 was reported to regulate tomato pedicel via alteration of the auxin gradient response AZ (FAZ). present work aimed further examine how regulates signaling factors regulatory genes involved abscission, by using silenced lines performing a large-scale transcriptome profiling FAZ before after removal, customized AZ-specific microarray. results highlighted differential expression KD1-silenced plants compared wild-type. In TAPG4::antisense plants, decreased resulting altered genes, such as epigenetic modifiers, transcription factors, posttranslational regulators, antioxidative defense occurring at zero time affecting levels detected 4 h removal. additional 4–20 thereby leading an inhibited phenotype, downregulation execution processes. Our data suggest that master regulator process, which promotes pedicels. This suggestion based on inhibitory effect silencing operates various pathways, delay competence acquisition cells respond ethylene signaling.