Tvorba terpenoidů u buku lesního v podmínkách zvýšené koncentrace CO2 a UV záření.

Plants release a wide spectrum of biogenic volatile organic compounds into the envi-ronment. These compounds attract pollinators and can protect plants against pests and/or biotic and abiotic stresses. I have investigated the impact of different UV radiation in-tensities and elevated atmospheric CO2 concentrations on the content of terpenoids in the leaves of European beech during the vegetation season. The trees were growing un-der the elevated (EC; 700 ppm) and ambient CO2 concentration (AC; 400 ppm) and at three UV radiation intensities - ambient (UVamb), enhanced (150 %; UV+), and excluded (UV–). The results show that AC trees had higher content of monoterpenes than EC trees during the whole vegetation season. Limonene and 2-bornene were found to be the most abundant monoterpenes located in the beech leaves. The highest content of 2-bornene was found in AC plants cultivated under UV– radiation. The contents of α-pinene gradually decreased during the vegetation season, while the content of limonene was increasing.Formula clause