The impact of far‐red light supplementation on hormonal re‐sponses to cold acclimation in barley

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F21%3A00545999" target="_blank" >RIV/61389030:_____/21:00545999 - isvavai.cz</a>

Výsledek na webu

<a href="http://doi.org/10.3390/biom11030450" target="_blank" >http://doi.org/10.3390/biom11030450</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/biom11030450" target="_blank" >10.3390/biom11030450</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The impact of far‐red light supplementation on hormonal re‐sponses to cold acclimation in barley

Popis výsledku v původním jazyce

Cold acclimation, the necessary prerequisite for promotion of freezing tolerance, is affected by both low temperature and enhanced far‐red/red light (FR/R) ratio. The impact of FR supplementation to white light, created by artificial LED light sources, on the hormone levels, metabolism, and expression of the key hormone metabolism‐related genes was determined in winter barley at moderate (15 °C) and low (5 °C) temperature. FR‐enhanced freezing tolerance at 15 °C was associated with promotion of abscisic acid (ABA) levels, and accompanied by a moderate increase in indole‐3‐acetic acid (IAA) and cis‐zeatin levels. The most prominent impact on the plants’ freezing tolerance was found after FR pre‐treatment at 15 °C (for 10 days) followed by cold treatment at FR supplementation (7 days). The response of ABA was diminished in comparison with white light treatment, probably due to the elevation of stress tolerance during FR pre‐treatment. Jasmonic acid (JA) and salicylic acid (SA) were transiently reduced. When the plants were exposed directly to a combination of cold (5 °C) and FR supplementation, ABA increase was higher than in white light, and was associated with enhanced elevation of JA and, in the longer term (after 7 days), with IAA and cis‐zeatin increase, which indicates a stronger stress response and better acclimation. Cold hardening was more efficient when FR light was applied in the early developmental stage of the barley plants (three‐leaf stage, 18 days), rather than in later stages (28‐days). The dynamics of the phytohormone changes are well supported by the expression profiles of the key hormone metabolism-related genes. This series of treatments serves as evidence for the close relationship between plant hormones, light quality, and low temperature at the beginning of cold acclimation. Besides the timing of the FR treatments, plant age also represents a key factor during light spectrum‐dependent cold acclimation.

Název v anglickém jazyce

The impact of far‐red light supplementation on hormonal re‐sponses to cold acclimation in barley

Popis výsledku anglicky

Cold acclimation, the necessary prerequisite for promotion of freezing tolerance, is affected by both low temperature and enhanced far‐red/red light (FR/R) ratio. The impact of FR supplementation to white light, created by artificial LED light sources, on the hormone levels, metabolism, and expression of the key hormone metabolism‐related genes was determined in winter barley at moderate (15 °C) and low (5 °C) temperature. FR‐enhanced freezing tolerance at 15 °C was associated with promotion of abscisic acid (ABA) levels, and accompanied by a moderate increase in indole‐3‐acetic acid (IAA) and cis‐zeatin levels. The most prominent impact on the plants’ freezing tolerance was found after FR pre‐treatment at 15 °C (for 10 days) followed by cold treatment at FR supplementation (7 days). The response of ABA was diminished in comparison with white light treatment, probably due to the elevation of stress tolerance during FR pre‐treatment. Jasmonic acid (JA) and salicylic acid (SA) were transiently reduced. When the plants were exposed directly to a combination of cold (5 °C) and FR supplementation, ABA increase was higher than in white light, and was associated with enhanced elevation of JA and, in the longer term (after 7 days), with IAA and cis‐zeatin increase, which indicates a stronger stress response and better acclimation. Cold hardening was more efficient when FR light was applied in the early developmental stage of the barley plants (three‐leaf stage, 18 days), rather than in later stages (28‐days). The dynamics of the phytohormone changes are well supported by the expression profiles of the key hormone metabolism-related genes. This series of treatments serves as evidence for the close relationship between plant hormones, light quality, and low temperature at the beginning of cold acclimation. Besides the timing of the FR treatments, plant age also represents a key factor during light spectrum‐dependent cold acclimation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10609 - Biochemical research methods

Projekt

<a href="/cs/project/EF16_019%2F0000738" target="_blank" >EF16_019/0000738: Centrum experimentální biologie rostlin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Biomolecules

ISSN

2218-273X

e-ISSN

2218-273X

Svazek periodika

11

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

19

Strana od-do

450

Kód UT WoS článku

000633402300001

EID výsledku v databázi Scopus

2-s2.0-85102644133