Beschreibung:
<jats:p>The early wilting and yellowing of leaves in response to ethylene is the main limitation affecting the vase quality of cut chrysanthemums. Therefore, leaf senescence is the most difficult problem in the post-harvest and production of chrysanthemums. Nevertheless, the molecular mechanism of ethylene on the regulation of post-harvest senescence of cut chrysanthemum leaves is still unclear. In this study, we identified an ethylene-sensitive chrysanthemum ‘FenDante,’ which showed rapid chlorophyll content decrease under ethylene treatment, resulting in leaf yellowing and wilting before flower senescence. A new generation of Illumina sequencing platform was used to identify differentially expressed genes in the leaves in response to ethylene treatment in chrysanthemum. A total of 1.04 Gb of raw reads was obtained, including 753 and 2790 differentially expressed genes at 3 h and 24 h after ethylene treatment, respectively. KEGG analysis revealed that the differentially expressed genes are mainly involved in plant hormone synthesis and signal transduction, chlorophyll metabolism, aquaporins, and reactive oxygen species. The gene expression regulatory networks in the leaves of post-harvest cut chrysanthemums in response to ethylene treatment were studied, which lays the foundation for future research on the molecular mechanisms of ethylene-mediated leaf senescence in cut chrysanthemums.</jats:p>