Hormonal responses associated with acclimation to freezing stress in Lolium perenne

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F21%3A00541511" target="_blank" >RIV/61389030:_____/21:00541511 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/21:73605168

Result on the web

<a href="http://doi.org/10.1016/j.envexpbot.2020.104295" target="_blank" >http://doi.org/10.1016/j.envexpbot.2020.104295</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envexpbot.2020.104295" target="_blank" >10.1016/j.envexpbot.2020.104295</a>

Result language

angličtina

Original language name

Hormonal responses associated with acclimation to freezing stress in Lolium perenne

Original language description

Complex phytohormonal analyses revealed hormone changes underlying the freezing response of perennial ryegrass (Lolium perenne L.). Comparisons among sensitive (code of accession 1/61), highly tolerant (5/101) and semi-tolerant (6/104, sensitive without acclimation, but tolerant after acclimation) genotypes allowed identification of changes associated with freezing tolerance. The main response to freezing stress (−7 °C for four days) was a significant elevation of abscisic acid (ABA) in all tissues of all genotypes, supported by elevation of jasmonic acid (JA) in leaves, and of salicylic acid (SA) in crowns and roots. Jasmonate-isoleucine increase was observed in roots of the tolerant genotype. The auxin (indole-3-acetic acid) levels showed relatively minor changes, while cytokinins exhibited up-regulation in crowns of sensitive genotypes. Tolerant genotypes exhibited decreased levels of highly active cytokinin trans-zeatin compensated by elevated low-active cis-zeatin, involved in stress responses. Cold acclimation (3 °C for seven days) applied prior frost treatment was associated with stimulation of plant defences, especially expression of ice recrystallisation inhibition protein LpIRI3. Acclimation diminished the impact of subsequent freezing treatment as indicated by lower up-regulation of stress hormones ABA, JA and SA in all tested tissues (with the exception of SA in crowns and roots of sensitive genotype) and up-regulation of active cytokinins in tolerant and semi-tolerant genotypes, especially in crowns and roots.

Czech name

—

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

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

Publication year

2021

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

182

Issue of the periodical within the volume

FEB

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

104295

UT code for WoS article

000600612000003

EID of the result in the Scopus database

2-s2.0-85096468982