engleski

Metabolomic response of kale (Brassica oleraceavar. acephala) to low temperature stress

According to World Health Organization, climate change has a major impact on food production worldwide, and this trend will be even more pronounced in the future. One example is the increased production of Brassica oleracea var acephala in the United States in recent years. In last couple of years, vegetables from acephala group have been popularized as a food with positive effects on human health due to the presence of specialized metabolites from the glucosinolates, polyphenols and carotenoids groups, which in plants have important roles in interaction between plants and the environment. The aim of present work was to determine the composition of the metabolites in kale exposed to low temperatures in order to explain the mechanisms of stress resistance. Two experimental setups were used: in vitro-grown plants and plants grown in soil. After exposure to low temperature (+ 8 °C and -8 °C), the composition of specialized metabolites (from polyphenols, glucosinolates and carotenoids groups) was compared with the control. The levels of prolin significantly increase with the low temperature. Low temperature stress the most influenced glucosinolate level whose role in low temperature stress would be studied in the future.

kale ; specialized metabolites ; low temperature

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