The histone deacetylase SRT2 enhances the tolerance of chrysanthemum to low temperatures through the ROS scavenging system.

Low temperatures can severely affect plant growth and reduce their ornamental value. A family of plant histone deacetylases allows plants to cope with both biotic and abiotic stresses. In this study, we screened and cloned the cDNA of DgSRT2 obtained from transcriptome sequencing of chrysanthemum leaves under low-temperature stress.

DgHDA6 enhances the cold tolerance in chrysanthemum by improving ROS scavenging capacity.

Histone deacetylases have been demonstrated to play an important role in responding to low-temperature stress, but the related response mechanism in chrysanthemum remains unclear. In this study, we isolated a cold-induced gene, DgHDA6, from chrysanthemum (Chrysanthemum morifolium Ramat). DgHDA6 contains 474 amino acids and shares a typical deacetylation domain with RPD3/HDA1 family members.

Transcription factor DgMYB recruits H3K4me3 methylase to DgPEROXIDASE to enhance chrysanthemum cold tolerance.

Cold affects the growth and development of plants. MYB transcription factors and histone H3K4me3 transferase ARABIDOPSIS TRITHORAXs (ATXs) play important regulatory functions in the process of plant resistance to low-temperature stress. In this study, DgMYB expression was responsive to low temperature, and overexpression of DgMYB led to increased tolerance, whereas the dgmyb mutant resulted in decreased tolerance of Chrysanthemum morifolium (Dendranthema grandiflorum var.

Lysine malonylation of DgnsLIPID TRANSFER PROTEIN1 at the K81 site improves cold resistance in chrysanthemum.

Lysine malonylation (Kmal) is a recently discovered posttranslational modification, and its role in the response to abiotic stress has not been reported in plants. In this study, we isolated a nonspecific lipid transfer protein, DgnsLTP1, from chrysanthemum (Dendranthema grandiflorum var. Jinba).