Changes in Growth Characteristics and Physiological Activity of Cnidium officinale Makino according to the Climate Change Scenario (RCP)

Yun, Y.B.; Um, Y.R.; Huh, J.H.; Son, H.J.; Song, Y.G.; Lee, K.C.

Changes in Growth Characteristics and Physiological Activity of Cnidium officinale Makino according to the Climate Change Scenario (RCP)

2022

BACKGROUND: Cnidium officinale Makino is a representative medicinal plant, but it is sensitive to changes in climate. The aim of this study was to investigate the growth, physiological reaction, and active compound content of C. officinale Makino in different Representative Concentration Pathway scenarios (RCP 2.6, 4.5, and 8.5). METHODS AND RESULTS: The net photosynthesis rate of C. officinale was reduced in July and was highest in RCP 8.5 over the entire study period. The maximum carboxylation rate and maximum electron transport rate were reduced in July, therefore, photosynthetic activity also decreased. Chlorophyll a and b, total chlorophyll, and carotenoid content were significantly decreased in high-level RCP scenarios. An increased amount of light energy was captured in photosystem II, but it was lost as heat rather than being used in the electron transfer process. The decrease in the photosynthetic activity of C. officinale in RCP 8.5 was due to the accumulation of excitation energy by inactivation of the reaction center of photosystem II. The chlorogenic acid, ferulic acid, and senkyunolide A content in were significantly low in RCP 8.5. CONCLUSIONS: CO2 concentration significantly affects the growth, physiological sensitivity, and active compound content of C. officinale.

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