Comparative Transcriptomics for Pepper (Capsicum annuum L.) under Cold Stress and after Rewarming

Cold stress has become one of the main abiotic stresses in pepper, which severely limits growth and development pepper. In this study, physiological indicators transcriptome a cold-tolerance (CT) inbred line A188 cold-sensitive (CS) A122 under cold–rewarm treatments were studied; aim study was to determine potential key factors pepper response cold stress. Compared with CT, CS wilts more seriously after stress, poor resilience, higher content malondialdehyde, lower soluble sugar total chlorophyll. Moreover, during treatment, 7333 5953 differentially expressed genes (DEGs) observed for CT CS, respectively. These DEGs significantly enriched pathways related photosynthesis, plant hormone signal transduction, DNA damage repair. Interestingly, addition widely studied transcription cold, it also found that 13 NAC increased T4 group; meanwhile, NAC8 (Capana02g003557) NAC72 (Capana07g002219) than those rewarming 1 h 72 treatment. Notably, weighted gene coexpression network analysis identified four positively correlated modules eight hub genes, including zinc finger proteins, heat shock 70 kda protein, cytochrome P450 family, are tolerance. All these may be responsible even tolerance