The impact of heat stress targeting on the hormonal and transcriptomic response in Arabidopsis

Dobrá, Jana; Černý, Martin; Štorchová, Helena; Dobrev, Petre I.; Skalák, Jan; Jedelský, Petr; Lukšanová, H.; Gaudinová, Alena; Pešek, Bedřich; Malbeck, Jiří; Vaněk, Tomáš; Brzobohatý, Břetislav; Vaňková, Radomı́ra

doi:10.1016/j.plantsci.2014.11.005

Cited by 77 publications

(54 citation statements)

References 39 publications

(42 reference statements)

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“…Observed responses of Arabidopsis to heat stress treatments include a rapid but transient increase in active cytokinin contents [134,135]. A rapid proteomic heat-shock response that could be mimicked to some extent by cytokinin treatment at standard temperature has also been reported [136], indicating that cytokinin may play a role in temperature perception.…”

Section: Temperature and Cytokininmentioning

confidence: 99%

“…This indicates that cytokinin could serve as a signal for thermomorphogenesis. It is also likely that a higher temperature sensitizes cytokinin signalling, which could explain why a transient increase in the active cytokinin pool is followed by its significant depletion [134,135], and downregulation in cytokinin metabolism genes and the expression of ARR-type A orthologs in strawberry ( Fragaria vesca ) [143,144]. It has also been proposed that heat stress-induced cytokinin depletion can promote stomatal closure, as this process is inhibited in plants with increased cytokinin levels [135].…”

Section: Temperature and Cytokininmentioning

confidence: 99%

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Cytokinin at the Crossroads of Abiotic Stress Signalling Pathways

Pavlů

Novák

Koukalová

et al. 2018

IJMS

Self Cite

132

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Cytokinin is a multifaceted plant hormone that plays major roles not only in diverse plant growth and development processes, but also stress responses. We summarize knowledge of the roles of its metabolism, transport, and signalling in responses to changes in levels of both macronutrients (nitrogen, phosphorus, potassium, sulphur) and micronutrients (boron, iron, silicon, selenium). We comment on cytokinin’s effects on plants’ xenobiotic resistance, and its interactions with light, temperature, drought, and salinity signals. Further, we have compiled a list of abiotic stress-related genes and demonstrate that their expression patterns overlap with those of cytokinin metabolism and signalling genes.

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Section: Temperature and Cytokininmentioning

confidence: 99%

Section: Temperature and Cytokininmentioning

confidence: 99%

Cytokinin at the Crossroads of Abiotic Stress Signalling Pathways

Pavlů

Novák

Koukalová

et al. 2018

IJMS

Self Cite

132

View full text Add to dashboard Cite

show abstract

“…Its level is greatly enhanced during responses to stresses associated with dehydration (summarized in Vishwakarma et al, 2017). ABA has, however, an important function in heat stress as well (e.g., Dobra et al, 2015;Suzuki et al, 2016). Jasmonic acid (JA) and ethylene have been shown to be the key hormones in the defense against necrotroph and herbivore attack, however, they are also involved in responses to abiotic stresses (see Kazan, 2015).…”

Section: Introductionmentioning

confidence: 99%

Heat Acclimation and Inhibition of Cytokinin Degradation Positively Affect Heat Stress Tolerance of Arabidopsis

et al. 2020

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In order to pinpoint phytohormone changes associated with enhanced heat stress tolerance, the complex phytohormone profiles [cytokinins, auxin, abscisic acid (ABA), jasmonic acid (JA), salicylic acid and ethylene precursor 1-aminocyclopropane-1carboxylic acid (ACC)] were compared in Arabidopsis thaliana after direct heat shock (45°C, 3 h) and in heat-stressed pre-acclimated plants (1 h at 37°C followed by 2 h at optimal temperature 20°C). Organ-specific responses were followed in shoot apices, leaves, and roots immediately after heat shock and after 24-h recovery at 20°C. The stress strength was evaluated via membrane ion leakage and the activity of nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOX) and antioxidant enzymes [superoxide dismutases, guaiacol peroxidases (POD), catalases, ascorbate peroxidases (APX)]. Heat acclimation diminished negative effects of heat stress, especially in apices and roots, no significant differences being observed in leaves. Low NOX1-3 activities indicated diminished production of reactive oxygen species. Higher activity of APX, POD1, and the occurrence of POD3-4 reflected acclimation-stimulated readiness of the antioxidant system. Acclimation diminished heat shock-induced changes of ABA, JA, cytokinin, and auxin levels in apices. Excess of ABA catabolites suggested an early stress response. The strong up-regulation of ABA and ACC in roots indicated defense boost in roots of acclimated plants compared to the non-acclimated ones. To evaluate the possibility to enhance stress tolerance by cytokinin pool modulation, INCYDE-F, an inhibitor of cytokinin oxidase/dehydrogenase, was applied. As cytokinin effects on stress tolerance may depend on timing of their regulation, INCYDE was applied at several time-points. In combination with acclimation, INCYDE treatment had a slight positive effect on heat stress tolerance, mainly when applied after 2-h period of the optimal temperature. INCYDE increased contents of cytokinins trans-zeatin and cis-zeatin in roots and auxin in all tissues after heat shock. INCYDE also helped to suppress the content of ABA in leaves, and ethylene in apices and roots. INCYDE application to non-acclimated plants (applied before Frontiers in Plant Science | www.frontiersin.org or after heat shock) strengthened negative stress effects, probably by delaying of the repair processes. In conclusion, pre-treatment with moderately elevated temperature enhanced heat stress tolerance and accelerated recovery after stress. Inhibition of cytokinin degradation by INCYDE slightly improved recovery of acclimated plants.

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“…As developing parts of the plant compete for inputs, florets degenerate, peduncle growth stagnates and spikelet becomes sterile (Jagadish et al, 2010. The hormonal signals generated from hormonal crosstalk in response to HTS is translated into physiological and morphological adaptations including changes in the above and below biomass of the plant, stomatal movement, transport of water and grain filling rate (Skalák et al, 2016, Dobrá et al, 2015.…”

Section: Drought and High Temperature Stress Effects And Response Mecmentioning

confidence: 99%

When water runs dry and temperature heats up: Understanding the mechanisms in rice tolerance to drought and high temperature stress conditions

Rabara¹,

Msanne²,

Ferrer³

et al. 2018

Preprint

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Rice production, owing to its high-water requirement for cultivation, is very vulnerable to the threat of changing climate, particularly prolonged drought and high temperature. Such threats heighten the need for abiotic stress-resilient rice varieties with better yield potential. This review examines the physiological and molecular mechanisms of rice varieties to cope with stress conditions of drought (DS), high temperature (HTS) and their combination (DS-HTS). It appraises research studies in rice about its various phenotypic traits, genetic loci and response mechanisms to stress conditions to help craft new breeding strategies for rice varieties with improved resilience to abiotic stresses. This review consolidates available information on promising rice cultivars with desirable traits as well as advocates synergistic and complementary approaches in molecular and systems biology to develop new rice breeds that favorably respond to climate-induced abiotic stresses. The development of new breeding and cultivation strategies for climate-resilient rice varieties is a challenging task. It requires a comprehensive understanding of the various morphological, biochemical, physiological, and molecular components governing yield under drought and high temperature, but possible by implementing cohesive approaches involving molecular and systems biology approaches in genomics and molecular breeding, including genetic engineering.

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The impact of heat stress targeting on the hormonal and transcriptomic response in Arabidopsis

Cited by 77 publications

References 39 publications

Cytokinin at the Crossroads of Abiotic Stress Signalling Pathways

Cytokinin at the Crossroads of Abiotic Stress Signalling Pathways

Heat Acclimation and Inhibition of Cytokinin Degradation Positively Affect Heat Stress Tolerance of Arabidopsis

<strong>When water runs dry and temperature heats up: </strong><strong>Understanding the mechanisms in rice tolerance to drought and </strong><strong>high temperature stress conditions</strong>

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