trans-Zeatin N-glucosides can delay salt accelerated leaf senescence in Arabidopsis thaliana

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F25%3A00637643" target="_blank" >RIV/61389030:_____/25:00637643 - isvavai.cz</a>

Alternative codes found

RIV/62156489:43210/25:43927094 RIV/61989592:15310/25:73634795

Result on the web

<a href="https://doi.org/10.1016/j.plaphy.2025.110101" target="_blank" >https://doi.org/10.1016/j.plaphy.2025.110101</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.plaphy.2025.110101" target="_blank" >10.1016/j.plaphy.2025.110101</a>

Result language

angličtina

Original language name

trans-Zeatin N-glucosides can delay salt accelerated leaf senescence in Arabidopsis thaliana

Original language description

While cytokinin (CK) can delay natural leaf senescence, its effects on abiotic stress accelerated leaf senescence are less studied. Here we show N-conjugated trans-zeatin CK forms (tZ7G and tZ9G, or tZNGs) have the ability to delay salt stress senescence. Using a modified dark-induced senescence bioassay with Arabidopsis leaves, exogenous salt treatment accelerated leaf senescence as measured by lower photosystem II efficiency (Fv/Fm) and chlorophyll content. tZNGs were able to delay these parameters at concentrations as low as 10 nM similar to tZ, indicating that tZ7G and tZ9G can function in delaying salt accelerated senescence (SAS). To better understand physiological effects regulating tZNG delay of senescence, transcriptomics, proteomics, as well as CK measurements were examined. Salt treatment has strong transcriptome and proteome effects in accelerating senescence and reducing overall CK levels. Exogenous CK treatments could be quickly detected from changes seen in endogenous CK measurements, where each CK has a distinct profile contributing to transcript/protein alterations. Interestingly, transcriptomics show tZNGs are primarily responsive at later stages of salt senescence, in contrast to an immediate and continual response of tZ treatment. Known CK-regulated genes are induced by tZNGs and tZ, as corroborated by ARR:GUS reporter lines. Differences between tZNGs and tZ DEGs were revealed by WGCNA that included salt and CK specifically gene modules. In contrast, proteomic analysis revealed unique, but similar numbers of tZNG compared to tZ DAPs across senescence. GO term analysis of tZNG DEGs and DAPs showed enrichment of senescence, chloroplast, and CK signaling. Together this indicates tZNGs function as active CK forms in delaying salt accelerated leaf senescence.

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

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Plant Physiology and Biochemistry

ISSN

0981-9428

e-ISSN

1873-2690

Volume of the periodical

227

Issue of the periodical within the volume

OCT

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

18

Pages from-to

110101

UT code for WoS article

001504863100005

EID of the result in the Scopus database

2-s2.0-105006940465