Evidence map›Paper›PMID 42892657›Full record

ArticlePlanta2026

Light modulates organ-specific gibberellin-abscisic acid crosstalk during drought response in Arabidopsis thaliana.

Tereza Miksteinová, Marek Szecówka, Ivan Petřík, Terezie Urbanová, Tereza Trávníčková, Martina Špundová, Martin Fellner, Peter Hedden

Abstract read
In one paragraph

Article in Planta, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Tereza MiksteinováLaboratory of Growth Regulators, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 27, 77900, Olomouc, Czech Republic.
Marek SzecówkaLaboratory of Growth Regulators, Faculty of Science, Palacký University, Šlechtitelů 27, 77900, Olomouc, Czech Republic.
Ivan PetříkLaboratory of Growth Regulators, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 27, 77900, Olomouc, Czech Republic.
Terezie UrbanováLaboratory of Growth Regulators, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 27, 77900, Olomouc, Czech Republic.
Tereza TrávníčkováLaboratory of Growth Regulators, Faculty of Science, Palacký University, Šlechtitelů 27, 77900, Olomouc, Czech Republic.
Martina ŠpundováDepartment of Biophysics, Faculty of Science, Palacký University, Olomouc, Czech Republic.
Martin FellnerLaboratory of Growth Regulators, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 27, 77900, Olomouc, Czech Republic.
Peter HeddenLaboratory of Growth Regulators, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 27, 77900, Olomouc, Czech Republic. hedden@ueb.cas.cz.ORCID http://orcid.org/0000-0002-4216-7488

Funding

European Regional Development Fund CZ.02.01.01/00/22_008/0004581Grantová Agentura České Republiky 20-17984SUniverzita Palackého v Olomouci IGA_PrF_2026_014
6 · The paper itself

Abstract

MAIN

conclusionContinuous blue light enhances drought tolerance in Arabidopsis by modulating ABA and GA pathways, whilst controlled GA catabolism, especially via GA2ox7/8, is important for stomatal regulation and drought adaptation. In response to drought, plants undergo physiological and developmental adjustments to reduce water loss and survive the stress, including reduced shoot growth, altered root architecture, and stomatal closure. These processes are regulated by phytohormones, including gibberellins (GAs), which mediate growth adjustments, and abscisic acid (ABA), which promotes stomatal closure. In addition, light signalling plays a crucial role in plant adaptation to drought. Here, we investigated how progressive water restriction affects hormone levels, gene expression, and leaf temperature in Arabidopsis thaliana shoots and roots under two contrasting light regimes: white light under short-day and continuous low-intensity blue light, with a focus on GA and ABA signalling pathways. The hormonal contribution to the drought response was investigated by analysis of ABA and GA mutants. Plants grown under continuous blue light experienced less-drought stress compared with white light as reflected in growth performance and differential gene expression. Drought increased ABA levels in leaves and roots, with stronger accumulation in roots under both light conditions. By contrast, GA production was decreased in leaves and increased in roots under drought in white light, but with little change in blue light. The change in GA status in leaves was associated with down-regulation of GA-biosynthetic 20-OXIDASE genes and up-regulation of GA-catabolic 2-OXIDASE genes (AtGA2ox6, AtGA2ox9). ABA- and GA-deficient mutants were unaffected by water restriction, whilst GA-overproducers lacking GA2ox genes or overexpressing AtGA20ox1 were hypersensitive to drought, with the C

Indexed as

Abscisic AcidArabidopsisGibberellinsPlant Growth RegulatorsArabidopsis ProteinsBlue LightDrought ResistanceDroughtsGene Expression Regulation, PlantLightPlant LeavesPlant RootsPlant StomataSignal TransductionAbscisic AcidArabidopsis ProteinsGibberellinsPlant Growth RegulatorsBlue lightDrought stressGA 2-oxidaseGA biosynthesisGA catabolismHormone crosstalkStomatal regulation

Identifiers

PMID42892657
PMCPMC13676654

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.