The dynamics of epidermal flavonoid (epFlav) induction was monitored during 11 days in the leaves of three Ocimum basilicum varieties: Americanum, Genovese and Purpurescens, Salvia officinalis, Eruca sativa and Verbascum thapsus previously grown in a glasshouse (receiving 16% of sunlight irradiance without UV). At full sunlight plants received mean daily doses of 6.97 MJ m-2, 0.86 MJ m-2 and 22.46 kJ m-2 in the photosynthetically active radiation, UV-A and UV-B wavelengths, respectively. Although constitutive concentration of epFlav was similar, dynamics of their induction was species-specific. Significant increase in epFlav accumulation was observed 30h after exposure to sunlight in all species except O. basilicum var. Purpurescens, in which the increase was delayed. This delay was correlated with induction of constitutive epidermal anthocyanins. Total leaf flavonoids were unchanged, in contrast to epidermal, emphasizing their UV-B absorbing function. Total antioxidative capacity incr...eased at least 2-fold under sunlight, which was in accordance with total phenolic increase. Leaf dry biomass was 50-100% higher in sunlight-exposed compared to glasshouse grown plants, while fresh biomass was unchanged, indicative of leaf thickening. We showed that flavonoids accumulation was dependent on light conditions and constitutive pool of UV-B absorbing compounds.
Keywords:
epidermal flavonoid / medicinal herbs / different light conditions
Source:
1st Network Meeting of UV4Plants, International Association for Plant UV Research abstract book, 30 – 31 May, 2016, Pécs, Hungary, 2016, 65-
TY - CONF
AU - Živanović, Bojana
AU - Sedlarević Zorić, Ana
AU - Vidović, Marija
AU - Morina, Filis
AU - Veljovic Jovanovic, Sonja
PY - 2016
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1874
AB - The dynamics of epidermal flavonoid (epFlav) induction was monitored during 11 days in the leaves of three Ocimum basilicum varieties: Americanum, Genovese and Purpurescens, Salvia officinalis, Eruca sativa and Verbascum thapsus previously grown in a glasshouse (receiving 16% of sunlight irradiance without UV). At full sunlight plants received mean daily doses of 6.97 MJ m-2, 0.86 MJ m-2 and 22.46 kJ m-2 in the photosynthetically active radiation, UV-A and UV-B wavelengths, respectively. Although constitutive concentration of epFlav was similar, dynamics of their induction was species-specific. Significant increase in epFlav accumulation was observed 30h after exposure to sunlight in all species except O. basilicum var. Purpurescens, in which the increase was delayed. This delay was correlated with induction of constitutive epidermal anthocyanins. Total leaf flavonoids were unchanged, in contrast to epidermal, emphasizing their UV-B absorbing function. Total antioxidative capacity increased at least 2-fold under sunlight, which was in accordance with total phenolic increase. Leaf dry biomass was 50-100% higher in sunlight-exposed compared to glasshouse grown plants, while fresh biomass was unchanged, indicative of leaf thickening. We showed that flavonoids accumulation was dependent on light conditions and constitutive pool of UV-B absorbing compounds.
PB - Department of Plant Biology, University of Pécs
C3 - 1st Network Meeting of UV4Plants, International Association for Plant UV Research abstract book, 30 – 31 May, 2016, Pécs, Hungary
T1 - Differential dynamics of flavonoid biosynthesis and accumulation in six medicinal herbs under full sunlight exposure
SP - 65
UR - https://hdl.handle.net/21.15107/rcub_rimsi_1874
ER -
@conference{
author = "Živanović, Bojana and Sedlarević Zorić, Ana and Vidović, Marija and Morina, Filis and Veljovic Jovanovic, Sonja",
year = "2016",
abstract = "The dynamics of epidermal flavonoid (epFlav) induction was monitored during 11 days in the leaves of three Ocimum basilicum varieties: Americanum, Genovese and Purpurescens, Salvia officinalis, Eruca sativa and Verbascum thapsus previously grown in a glasshouse (receiving 16% of sunlight irradiance without UV). At full sunlight plants received mean daily doses of 6.97 MJ m-2, 0.86 MJ m-2 and 22.46 kJ m-2 in the photosynthetically active radiation, UV-A and UV-B wavelengths, respectively. Although constitutive concentration of epFlav was similar, dynamics of their induction was species-specific. Significant increase in epFlav accumulation was observed 30h after exposure to sunlight in all species except O. basilicum var. Purpurescens, in which the increase was delayed. This delay was correlated with induction of constitutive epidermal anthocyanins. Total leaf flavonoids were unchanged, in contrast to epidermal, emphasizing their UV-B absorbing function. Total antioxidative capacity increased at least 2-fold under sunlight, which was in accordance with total phenolic increase. Leaf dry biomass was 50-100% higher in sunlight-exposed compared to glasshouse grown plants, while fresh biomass was unchanged, indicative of leaf thickening. We showed that flavonoids accumulation was dependent on light conditions and constitutive pool of UV-B absorbing compounds.",
publisher = "Department of Plant Biology, University of Pécs",
journal = "1st Network Meeting of UV4Plants, International Association for Plant UV Research abstract book, 30 – 31 May, 2016, Pécs, Hungary",
title = "Differential dynamics of flavonoid biosynthesis and accumulation in six medicinal herbs under full sunlight exposure",
pages = "65",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1874"
}
Živanović, B., Sedlarević Zorić, A., Vidović, M., Morina, F.,& Veljovic Jovanovic, S.. (2016). Differential dynamics of flavonoid biosynthesis and accumulation in six medicinal herbs under full sunlight exposure. in 1st Network Meeting of UV4Plants, International Association for Plant UV Research abstract book, 30 – 31 May, 2016, Pécs, Hungary
Department of Plant Biology, University of Pécs., 65.
https://hdl.handle.net/21.15107/rcub_rimsi_1874
Živanović B, Sedlarević Zorić A, Vidović M, Morina F, Veljovic Jovanovic S. Differential dynamics of flavonoid biosynthesis and accumulation in six medicinal herbs under full sunlight exposure. in 1st Network Meeting of UV4Plants, International Association for Plant UV Research abstract book, 30 – 31 May, 2016, Pécs, Hungary. 2016;:65.
https://hdl.handle.net/21.15107/rcub_rimsi_1874 .
Živanović, Bojana, Sedlarević Zorić, Ana, Vidović, Marija, Morina, Filis, Veljovic Jovanovic, Sonja, "Differential dynamics of flavonoid biosynthesis and accumulation in six medicinal herbs under full sunlight exposure" in 1st Network Meeting of UV4Plants, International Association for Plant UV Research abstract book, 30 – 31 May, 2016, Pécs, Hungary (2016):65,
https://hdl.handle.net/21.15107/rcub_rimsi_1874 .
