Dormancy breaking in Fagus sylvatica seeds is linked to formation of abscisic acid-glucosyl ester

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60456540%3A_____%2F20%3AN0000085" target="_blank" >RIV/60456540:_____/20:N0000085 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389030:_____/20:00531180 RIV/00020702:_____/20:N0000168

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s11056-019-09751-8" target="_blank" >https://link.springer.com/article/10.1007/s11056-019-09751-8</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dormancy breaking in Fagus sylvatica seeds is linked to formation of abscisic acid-glucosyl ester

Popis výsledku v původním jazyce

Seed dormancy is an adaptive mechanism that allows seed germination under suitable environmental conditions. Germination of stored dormant seeds proceeds after dormancy breaking induced by stratification. To improve understanding of dormancy breaking in beechnuts, we: investigated effects of moisture content and temperature during storage; analysed contents of abscisic acid, abscisic acid metabolites and indole-3-acetic acid in embryonic axes during storage and stratification; and histochemically localized storage proteins in embryogenic axes and cotyledons of beechnut embryos. The results show that storage conditions can affect the nuts’ abscisic acid contents, but not the stratification process. In addition, dormancy breaking is linked to a reduction in abscisic acid contents and depth of dormancy is not influenced by either of these storage factors. Detected changes that correlated most strongly with dormancy breaking were a big increase in abscisic acid-glucosyl ester levels and accompanying reduction in the abscisic acid-glucosyl ester to abscisic acid ratio. We detected extremely low concentrations of other abscisic acid metabolites-neophaseic, phaseic and dihydrophaseic acids—in non-dormant stored beechnuts, but somewhat higher concentrations during dormancy. No relationships between changes in indole-3-acetic acid levels with either storage conditions or dormancy breaking were detected. Changes in distributions of storage proteins were related to the seeds’ moisture content during storage and stratification rather than seed dormancy. We conclude that increases in endogenous abscisic acid-glucosyl ester levels and abscisic acid-glucosyl ester to abscisic acid ratios are good markers of depth of dormancy and/or effectiveness of stratification in beechnuts.

Název v anglickém jazyce

Dormancy breaking in Fagus sylvatica seeds is linked to formation of abscisic acid-glucosyl ester

Popis výsledku anglicky

Seed dormancy is an adaptive mechanism that allows seed germination under suitable environmental conditions. Germination of stored dormant seeds proceeds after dormancy breaking induced by stratification. To improve understanding of dormancy breaking in beechnuts, we: investigated effects of moisture content and temperature during storage; analysed contents of abscisic acid, abscisic acid metabolites and indole-3-acetic acid in embryonic axes during storage and stratification; and histochemically localized storage proteins in embryogenic axes and cotyledons of beechnut embryos. The results show that storage conditions can affect the nuts’ abscisic acid contents, but not the stratification process. In addition, dormancy breaking is linked to a reduction in abscisic acid contents and depth of dormancy is not influenced by either of these storage factors. Detected changes that correlated most strongly with dormancy breaking were a big increase in abscisic acid-glucosyl ester levels and accompanying reduction in the abscisic acid-glucosyl ester to abscisic acid ratio. We detected extremely low concentrations of other abscisic acid metabolites-neophaseic, phaseic and dihydrophaseic acids—in non-dormant stored beechnuts, but somewhat higher concentrations during dormancy. No relationships between changes in indole-3-acetic acid levels with either storage conditions or dormancy breaking were detected. Changes in distributions of storage proteins were related to the seeds’ moisture content during storage and stratification rather than seed dormancy. We conclude that increases in endogenous abscisic acid-glucosyl ester levels and abscisic acid-glucosyl ester to abscisic acid ratios are good markers of depth of dormancy and/or effectiveness of stratification in beechnuts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

40102 - Forestry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

New Forests

ISSN

0169-4286

e-ISSN

1573-5095

Svazek periodika

51

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

8

Strana od-do

671-678

Kód UT WoS článku

000533789300007

EID výsledku v databázi Scopus

2-s2.0-85073994251