Blue light as an important factor increasing plant tolerance to acute photooxidative stress

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F24%3A00597717" target="_blank" >RIV/86652079:_____/24:00597717 - isvavai.cz</a>

Alternative codes found

RIV/61988987:17310/24:A25038AQ

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0098847224002818?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0098847224002818?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envexpbot.2024.105923" target="_blank" >10.1016/j.envexpbot.2024.105923</a>

Result language

angličtina

Original language name

Blue light as an important factor increasing plant tolerance to acute photooxidative stress

Original language description

Previous studies have confirmed the stimulating effect of blue light on phenolic compound accumulation and emphasized that sufficient dose of blue light is essential for biosynthesis of B-dihydroxylated flavonoids with enhanced antioxidant properties (under UV-lacking conditions). This study investigates the importance of blue light and complex role of phenolic compounds in plant tolerance against acute photooxidative stress. Hordeum vulgare (L. Cv. Bojos) seedlings were acclimated to different light spectra (blue, green:red 1:1, and white composed of blue:green:red 1:1:1) at total irradiance 400 mu mol.m- 2 .s- 1 . Subsequently, they were subjected to a 3-hour combined stress induced by high photosynthetically active (850-950 mu mol.m- 2 .s- 1 ) and UV-B (2.0-2.5 W.m-- 2 ) radiation. Content of flavonoids, expression of genes involved in their biosynthesis (phenylalanine ammonia-lyase, chalcone synthase, flavonoid 3 '-hydroxylase), '-hydroxylase), and antioxidant activity of plant extracts were significantly highest in plants acclimated to blue light. As an indicator of reactive oxygen species interaction with biomolecules, the content of lipid hydroperoxides was estimated. It was demonstrated that plants acclimated to blue light revealed significantly lower extent of lipid peroxidation compared to those acclimated to white or green:red light. Plants exposed to combined light-induced stress for 3 hours exhibited pronounced disruption of PSII function: FV/FM V /F M tended to decrease proportionally with decreasing amount of blue photons in the treatments. Additionally, stress exposure upregulated the expression of genes related to phenolic compounds but not genes encoding antioxidant enzymes. We confirmed higher resistance of plants acclimated to blue light and presume that phenolic compounds are significantly involved in protection during the acute phase of stress.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Environmental and Experimental Botany

ISSN

0098-8472

e-ISSN

1873-7307

Volume of the periodical

226

Issue of the periodical within the volume

OCT

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

105923

UT code for WoS article

001286738100001

EID of the result in the Scopus database

2-s2.0-85199895751