Long-term exposure to enhanced UV-B radiation has no significant effects on growth or secondary compounds of outdoor-grown Scots pine and Norway spruce seedlings

Environmental Pollution
Satu TurtolaP Kainulainen

Abstract

The effects of long-term enhanced UV-B radiation on growth and secondary compounds of two conifer species were studied in an outdoor experiment. Scots pine (Pinus sylvestris) seedlings were exposed for two growing seasons and Norway spruce (Picea abies) seedlings for three growing seasons to supplemental UV-B radiation, corresponding to a 30% increase in ambient UV-B radiation. The experiment also included appropriate controls for ambient and increased UV-A radiation. Enhanced UV-B did not affect the growth of the conifer seedlings. In addition, neither the concentrations of terpenes and phenolics in the needles nor the concentrations of terpenes in the wood were affected. However, in the UV-A control treatment the concentrations of diterpenes in the wood of Scots pine decreased significantly compared to the ambient control. Apparently, a small increase in UV-B radiation has no significant effects on the secondary compounds and growth of Scots pine and Norway spruce seedlings.

References

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Citations

Nov 11, 2015·Environmental Pollution·Gabriele GuidolottiCarlo Calfapietra
Aug 31, 2012·Physiologia Plantarum·Emanuele PallozziMauro Centritto
Feb 16, 2008·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·UNKNOWN Environmental Effects Assessment Panel
Jul 6, 2019·Frontiers in Plant Science·Vanesa Eleonora TossiSandra Irene Pitta-Álvarez
Sep 17, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Tuula JyskeTuomo Tupasela
Feb 10, 2021·Plant Methods·Nadia SasaniNotburga Gierlinger

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