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Differential Antioxidant Response to Supplemental UV-B Irradiation and Sunlight in Three Basil Varieties

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F23%3A00583894" target="_blank" >RIV/60077344:_____/23:00583894 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.mdpi.com/1422-0067/24/20/15350" target="_blank" >https://www.mdpi.com/1422-0067/24/20/15350</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/ijms242015350" target="_blank" >10.3390/ijms242015350</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Differential Antioxidant Response to Supplemental UV-B Irradiation and Sunlight in Three Basil Varieties

  • Original language description

    Three basil plant varieties (Ocimum basilicum var. Genovese, Ocimum x citriodorum, and Ocimum basilicum var. purpurascens) were grown under moderate light (about 300 mu mol photons m(-2) s(-1)) in a glasshouse or growth chamber and then either transferred to an open field (average daily dose: 29.2 kJ m(-2) d-1) or additionally exposed to UV-B irradiation in a growth chamber (29.16 kJ m(-2) d(-1)), to reveal the variety-specific and light-specific acclimation responses. Total antioxidant capacity (TAC), phenolic profile, ascorbate content, and class III peroxidase (POD) activity were used to determine the antioxidant status of leaves under all four light regimes. Exposure to high solar irradiation at the open field resulted in an increase in TAC, total hydroxycinnamic acids (HCAs, especially caffeic acid), flavonoids, and epidermal UV-absorbing substances in all three varieties, as well as a two-fold increase in the leaf dry/fresh weight ratio. The supplemental UV-B irradiation induced preferential accumulation of HCAs (rosmarinic acid) over flavonoids, increased TAC and POD activity, but decreased the ascorbate content in the leaves, and inhibited the accumulation of epidermal flavonoids in all basil varieties. Furthermore, characteristic leaf curling and UV-B-induced inhibition of plant growth were observed in all basil varieties, while a pro-oxidant effect of UV-B was indicated with H2O2 accumulation in the leaves and spotty leaf browning. The extent of these morphological changes, and oxidative damage depended on the basil cultivar, implies a genotype-specific tolerance mechanism to high doses of UV-B irradiation.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10608 - Biochemistry and molecular biology

Result continuities

  • Project

    <a href="/en/project/EF15_003%2F0000336" target="_blank" >EF15_003/0000336: Metals, plants and people</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    International Journal of Molecular Sciences

  • ISSN

    1661-6596

  • e-ISSN

  • Volume of the periodical

    24

  • Issue of the periodical within the volume

    20

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    18

  • Pages from-to

    15350

  • UT code for WoS article

    001099423700001

  • EID of the result in the Scopus database

    2-s2.0-85175277079