Type-A response regulators negatively mediate heat stress response by altering redox homeostasis in Arabidopsis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F22%3A43922328" target="_blank" >RIV/62156489:43210/22:43922328 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3389/fpls.2022.968139" target="_blank" >https://doi.org/10.3389/fpls.2022.968139</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fpls.2022.968139" target="_blank" >10.3389/fpls.2022.968139</a>

Result language

angličtina

Original language name

Type-A response regulators negatively mediate heat stress response by altering redox homeostasis in Arabidopsis

Original language description

Besides the long-standing role of cytokinins (CKs) as growth regulators, their current positioning at the interface of development and stress responses is coming into recognition. The current evidence suggests the notion that CKs are involved in heat stress response (HSR), however, the role of CK signaling components is still elusive. In this study, we have identified a role of the CK signaling components type-A Arabidopsis response regulators (ARRs) in HSR in Arabidopsis. The mutants of multiple type-A ARR genes exhibit improved basal and acquired thermotolerance and, altered response to oxidative stress in our physiological analyses. Through proteomics profiling, we show that the type-A arr mutants experience a &apos;stress-primed&apos; state enabling them to respond more efficiently upon exposure to real stress stimuli. A substantial number of proteins that are involved in the heat-acclimatization process such as the proteins related to cellular redox status and heat shock, are already altered in the type-A arr mutants without a prior exposure to stress conditions. The metabolomics analyses further reveal that the mutants accumulate higher amounts of α-and γ-tocopherols, which are important antioxidants for protection against oxidative damage. Collectively, our results suggest that the type-A ARRs play an important role in heat stress response by affecting the redox homeostasis in Arabidopsis.

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

2022

Confidentiality

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

Name of the periodical

Frontiers in Plant Science

ISSN

1664-462X

e-ISSN

1664-462X

Volume of the periodical

13

Issue of the periodical within the volume

23 September

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

968139

UT code for WoS article

000873951200001

EID of the result in the Scopus database

2-s2.0-85140052510