The Epigenetic Mechanisms Underlying Thermomorphogenesis and Heat Stress Responses in Arabidopsis

Zioutopoulou, Anna; Patitaki, Eirini; Xu, Tianyuan; Kaiserli, Eirini

doi:10.3390/plants10112439

Cited by 10 publications

(12 citation statements)

References 65 publications

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“…Some of them (PHYTOCHROME B, EARLY FLOWERING 3) also act as thermosensors [22]. Photo-and thermo-adaptation involves major transcriptional reprogramming that is primarily mediated by changes in the nuclear architecture, such as chromatin remodeling, involving histone variant deposition (H2AZ, [23]); histone post-transcriptional modifications (HPTMs), such as H2B monoubiquitination [24] or histone acetylation [25]; and modifications of DNA methylation patterns [26]. Thermosensing is one of the best examples of plant acclimation that involves epigenetic regulation of heat shock factors and thermomorphogenesis genes through changes in histone marks and histone variant deposition.…”

Section: Interplay Between Stress-induced Epigenetic Changes and Stre...mentioning

confidence: 99%

Deep inside the epigenetic memories of stressed plants

Agius¹,

Moschou²,

Dobránszki³

et al. 2023

Trends in Plant Science

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Section: Interplay Between Stress-induced Epigenetic Changes and Stre...mentioning

confidence: 99%

Deep inside the epigenetic memories of stressed plants

Agius¹,

Moschou²,

Dobránszki³

et al. 2023

Trends in Plant Science

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“…; PTMs, including phosphorylation, SUMOylation, ubiquitination, etc. ; and sRNAs, regulate HS-responsive genes expression [5,111]. EMs transcriptionally and post-transcriptionally modulate HS-responsive genes by altering the chromatin status of these genes [110].…”

Section: Epigenetic Mechanisms Ptms and Small Rnas In Hs Response Reg...mentioning

confidence: 99%

“…EMs transcriptionally and post-transcriptionally modulate HS-responsive genes by altering the chromatin status of these genes [110]. Additionally, EMs are critical in the formation of epigenetic stress memory that can be transferred to the offspring of pre-stress-exposed plants [111]. The histone variant H2A.Z participates in several chromosomal processes such as DNA repair, transcriptional regulation and thermosensory responses.…”

Section: Epigenetic Mechanisms Ptms and Small Rnas In Hs Response Reg...mentioning

confidence: 99%

“…H2A.Z shows preferential deposition and enrichment in the +1 nucleosome after the transcription start site (TSS), consequently repressing gene expression [112]. However, HS causes the exclusion of H2A.Z from the +1 nucleosome on the promoter of the PIF4, consequently permitting chromatin accessibility and PIF4 binding to the G-box promoter element to evoke the induction of auxin-responsive and thermomophogenesis related genes such as Indole Acetic Acid-Induced Protein 29 (IAA29) [111].…”

Section: Epigenetic Mechanisms Ptms and Small Rnas In Hs Response Reg...mentioning

confidence: 99%

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Reproductive-Stage Heat Stress in Cereals: Impact, Plant Responses and Strategies for Tolerance Improvement

Zenda

Wang

Dong

et al. 2022

IJMS

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Reproductive-stage heat stress (RSHS) poses a major constraint to cereal crop production by damaging main plant reproductive structures and hampering reproductive processes, including pollen and stigma viability, pollination, fertilization, grain setting and grain filling. Despite this well-recognized fact, research on crop heat stress (HS) is relatively recent compared to other abiotic stresses, such as drought and salinity, and in particular, RSHS studies in cereals are considerably few in comparison with seedling-stage and vegetative-stage-centered studies. Meanwhile, climate change-exacerbated HS, independently or synergistically with drought, will have huge implications on crop performance and future global food security. Fortunately, due to their sedentary nature, crop plants have evolved complex and diverse transient and long-term mechanisms to perceive, transduce, respond and adapt to HS at the molecular, cell, physiological and whole plant levels. Therefore, uncovering the molecular and physiological mechanisms governing plant response and tolerance to RSHS facilitates the designing of effective strategies to improve HS tolerance in cereal crops. In this review, we update our understanding of several aspects of RSHS in cereals, particularly impacts on physiological processes and yield; HS signal perception and transduction; and transcriptional regulation by heat shock factors and heat stress-responsive genes. We also discuss the epigenetic, post-translational modification and HS memory mechanisms modulating plant HS tolerance. Moreover, we offer a critical set of strategies (encompassing genomics and plant breeding, transgenesis, omics and agronomy) that could accelerate the development of RSHS-resilient cereal crop cultivars. We underline that a judicious combination of all of these strategies offers the best foot forward in RSHS tolerance improvement in cereals. Further, we highlight critical shortcomings to RSHS tolerance investigations in cereals and propositions for their circumvention, as well as some knowledge gaps, which should guide future research priorities. Overall, our review furthers our understanding of HS tolerance in plants and supports the rational designing of RSHS-tolerant cereal crop cultivars for the warming climate.

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“…The main pathway of epigenetic regulation to combat stresses such as heat involves DNA methylation, ATP dependent chromatin remodeling, histone modifications, long non-coding RNAs etc. [ 26 , 27 , 28 , 29 ]. All the above epigenetic modifications fine-tune the gene expression of heat-responsive genes to handle stress deftly [ 27 ].…”

Section: Chromatin-based Transcriptional Reprogrammingmentioning

confidence: 99%

Chromatin-Based Transcriptional Reprogramming in Plants under Abiotic Stresses

Halder

Chaudhuri

Abdin

et al. 2022

Plants

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Plants’ stress response machinery is characterized by an intricate network of signaling cascades that receive and transmit environmental cues and ultimately trigger transcriptional reprogramming. The family of epigenetic regulators that are the key players in the stress-induced signaling cascade comprise of chromatin remodelers, histone modifiers, DNA modifiers and regulatory non-coding RNAs. Changes in the histone modification and DNA methylation lead to major alterations in the expression level and pattern of stress-responsive genes to adjust with abiotic stress conditions namely heat, cold, drought and salinity. The spotlight of this review falls primarily on the chromatin restructuring under severe abiotic stresses, crosstalk between epigenetic regulators along with a brief discussion on stress priming in plants.

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The Epigenetic Mechanisms Underlying Thermomorphogenesis and Heat Stress Responses in Arabidopsis

Cited by 10 publications

References 65 publications

Deep inside the epigenetic memories of stressed plants

Deep inside the epigenetic memories of stressed plants

Reproductive-Stage Heat Stress in Cereals: Impact, Plant Responses and Strategies for Tolerance Improvement

Chromatin-Based Transcriptional Reprogramming in Plants under Abiotic Stresses

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