PLANT&FOREST

Change of growth and carotenoid concentration in Korean fir with varied annual temperature on Mt. Halla

 12    2   Jin-Wook Kim2   Sung-Chul  Kim2,*   Jinhee  Kim1,*   

1Biomimicry Team, National Institute of Ecology, Seocheon 33657, Korea
2Department of Bio-Enviromental Chemistry, Chungnam National University, Daejeon 34134, Korea

Abstract

Deforestation and conservation of coniferous forest have been recognized as critical issues in Korea due to climate change. The main purpose of this research was to monitor changes of secondary metabolite contents and growth of Korean fir (Abies koreana) according to the temperature change in Mt. Halla. The Korean fir located at three different regions, Yeongsil, Witseoreum, and Jindallaebat, was monitored in April, July, and October from 2016 to 2018 and secondary metabolites, specifically lutein, α-carotenoid, and β-carotenoid, were analysed with high performance liquid chromatography. The results showed that average concentrations of lutein, α-carotenoid, and β-carotenoid were 0.82 - 23.30, 0.02 - 2.01, and 0.11 - 2.84 μg·g-1 and the highest concentration of secondary metabolite was observed in October compared to April and July. The average length and width of Korean fir in the three regions were 11.84 - 20.70 and 1.78 - 2.41 mm from 2016 - 2018. A correlation analysis showed that the concentrations of all three secondary metabolites were negatively correlated with temperature and a significant difference was observed between temperature and lutein concentration in Korean fir. Overall, growth and production of secondary metabolites in Korean fir highly depended on the temperature, and global warming thus might have an adverse effect on the growth and physiological changes of Korean fir in Mt. Halla.

Figures & Tables

Fig. 1. Temperature changes at Yeongsil (YS), Witseoreum (WS), and Jindallaebat (JD) on Mt. Halla during 2016 - 2018.