Metabolism Reorganization in Kale (Brassica oleracea L. var acephala) Populations with Divergent Glucosinolate Content under Thermal Stresses

Thermal stress causes the reduction in productivity and harvest quality. To adapt to different temperature ranges, plants activate protecting metabolic pathways. Previous studies have reported that stressful environments due abiotic stresses an impact on accumulation of glucosinolates (GSLs) Brassicaceae plants. In order determine role GSLs plant response thermal stress, we conducted a study comparing four populations with high low GSL content. The levels were analysed at temperatures [control (20), 12 32 °C], detecting higher content increased their resistance cold. addition, subjected cold indolic GSLs. Populations show glucobrassicin (GBS) sinigrin (SIN) under than grown control conditions. High lower accumulation. elucidate induced changes conditions, performed untargeted metabolomic analysis identified 25 compounds differentially expressed conditions Almost 50% these are classified as lipids (fatty amides, monoradylglycerols, diterpenes, glycosylglycerols, linoleic acids derivatives). Organoheterocyclic nitrogenous organic also over-represented. Therefore, current results suggest play key tolerance. Although associated molecular mechanisms not been elucidated, non-targeted metabolomics assay shows significant change lipid profile, need be studied further.