Transcriptome Analysis of the Regulatory Mechanism of Exogenous Spermidine in High Temperature Stress Resistance of Tomato Seedlings

Previous studies have shown that spermidine (Spd) can improve tolerance to high temperature stress in tomato seedlings. To further understand how Spd regulates the molecular components of signaling pathways, we performed a genome-wide transcriptome analysis seedlings treated with and/or exogenous Spd. The results demonstrate that, under conditions, significantly alleviated inhibition plant growth, as well improving net photosynthetic rate and pigment contents. revealed thousands differentially expressed genes (DEGs) response or without treatment. Half were induced by temperature, part Spd, some coordinated effect A GO indicated involved cellular processes, metabolic nucleotide binding sample subjected temperature. Some DEGs also physiological processes. These suggest potential pathways Spd-mediated plants. JA test was designed, which MYC2 JAS1 heat-resistant materials both increased, through quantitative RT-PCR.