Epigenetic responses to heat stress at different time scales and the involvement of small RNAs

Stief, Anna; Brzezinka, Krzysztof; Lämke, Jörn; Bäurle, Isabel

doi:10.4161/15592316.2014.970430

Cited by 47 publications

(36 citation statements)

References 39 publications

(46 reference statements)

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“…It is increasingly recognized that plants can remember a past exposure to environmental stress and this may serve them to be better prepared for a future stress incident. In the case of HS, such a memory has been thoroughly characterized at the whole plant and molecular level (Charng et al , , ; Meiri & Breiman, ; Stief et al , ,b). While a number of reports have implicated epigenetic regulators in plant HS responses (Liu et al , ), the involvement of chromatin modifications in HS memory was hitherto unknown.…”

Section: Discussionmentioning

confidence: 99%

“…Transcriptional memory was described in yeast, mammals, and plants as the phenomenon where gene induction is faster or stronger upon a repeated signal following an intervening lag phase or repressive phase (D'Urso & Brickner, 2014;Stief et al, 2014b;Avramova, 2015). In yeast, the mechanistic understanding of transcriptional memory is most advanced, and several non-exclusive mechanisms have been proposed (Brickner et al, 2007;Laine et al, 2009;Tan-Wong et al, 2009;Light et al, 2010Light et al, , 2013.…”

Section: Discussionmentioning

confidence: 99%

“…This area of research has only recently received increasing attention (Bruce et al, 2007;Conrath, 2011;Avramova, 2015;Hilker et al, 2015;Kim et al, 2015;Vriet et al, 2015), and the molecular basis of plant stress memory is still largely unknown. In this context, the term memory refers to the phenomenon where a signal of limited duration is perceived, stored and later retrieved, as evidenced by a modified response (Stief et al, 2014b). A related phenomenon in animals is hormesis, where a lowlevel stress treatment enhances resistance against the same and other stresses and increases growth, fecundity, and longevity (Gems & Partridge, 2008).…”

Section: Introductionmentioning

confidence: 99%

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A hit‐and‐run heat shock factor governs sustained histone methylation and transcriptional stress memory

et al. 2015

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In nature, plants often encounter chronic or recurring stressful conditions. Recent results indicate that plants can remember a past exposure to stress to be better prepared for a future stress incident. However, the molecular basis of this is poorly understood. Here, we report the involvement of chromatin modifications in the maintenance of acquired thermotolerance (heat stress [HS] memory). HS memory is associated with the accumulation of histone H3 lysine 4 di-and trimethylation at memory-related loci. This accumulation outlasts their transcriptional activity and marks them as recently transcriptionally active. High accumulation of H3K4 methylation is associated with hyper-induction of gene expression upon a recurring HS. This transcriptional memory and the sustained accumulation of H3K4 methylation depend on HSFA2, a transcription factor that is required for HS memory, but not initial heat responses. Interestingly, HSFA2 associates with memory-related loci transiently during the early stages following HS. In summary, we show that transcriptional memory after HS is associated with sustained H3K4 hyper-methylation and depends on a hit-and-run transcription factor, thus providing a molecular framework for HS memory.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A hit‐and‐run heat shock factor governs sustained histone methylation and transcriptional stress memory

et al. 2015

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“…Non-coding RNAs Stief, Brzezinka, L€ amke, and B€ aurle (2014) Discussed how microRNAs regulate the heat stress memory and increase survival upon a recurring heat stress in plants. In addition, focused on transgenerational inheritance of retrotransposition during prolonged heat stress Several mechanisms Liu, Feng, Li, and He (2015) Reviewed the role of different epigenetic mechanisms in plant heat responses, namely DNA methylation, histone modifications, histone variants, ATP-dependent chromatin remodelling, histone chaperones, small RNAs and long non-coding RNAs Norouzitallab et al (2014) Increased levels of the heat shock protein 70 (which configured increased tolerance to heat stress and additional resistance against the pathogenic bacteria Vibrio campbellii) were observed after exposure of a parthenogenetic population of Artemia to a non-lethal heat shock.…”

Section: Histone Modificationsmentioning

confidence: 99%

Synthesizing the role of epigenetics in the response and adaptation of species to climate change in freshwater ecosystems

et al. 2018

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Freshwater ecosystems are amongst the most threatened ecosystems on Earth. Currently, climate change is one of the most important drivers of freshwater transformation and its effects include changes in the composition, biodiversity and functioning of freshwater ecosystems. Understanding the capacity of freshwater species to tolerate the environmental fluctuations induced by climate change is critical to the development of effective conservation strategies. In the last few years, epigenetic mechanisms were increasingly put forward in this context because of their pivotal role in gene-environment interactions. In addition, the evolutionary role of epigenetically inherited phenotypes is a relatively recent but promising field. Here, we examine and synthesize the impacts of climate change on freshwater ecosystems, exploring the potential role of epigenetic mechanisms in both short- and long-term adaptation of species. Following this wrapping-up of current evidence, we particularly focused on bringing together the most promising future research avenues towards a better understanding of the effects of climate change on freshwater biodiversity, specifically highlighting potential molecular targets and the most suitable freshwater species for future epigenetic studies in this context.

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“…Plant Hsfs are important regulators of various plant responses to abiotic and biotic stresses, including heat, cold, salt, drought, osmotic1213141516, as well as bacterial and fungal pathogen infection17181920. After initially identified in yeast6, plant Hsf gene family has been identified and characterized in more and more plant species, including alfalfa ( Medicago sativa L.)21, Arabidopsis thaliana 22, rice ( Oryza sativa L.)2324, maize ( Zea mays L.)25, Medicago truncatula, Populus trichocarpa 26, wheat ( Triticum aestivum L.)27, soybean ( Glycine max )2829, Chinese cabbage ( Brassica rapa ssp.…”

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confidence: 99%

Heat shock transcription factors in banana: genome-wide characterization and expression profile analysis during development and stress response

Wei

Xia

et al. 2016

Sci Rep

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Banana (Musa acuminata) is one of the most popular fresh fruits. However, the rapid spread of fungal pathogen Fusarium oxysporum f. sp. cubense (Foc) in tropical areas severely affected banana growth and production. Thus, it is very important to identify candidate genes involved in banana response to abiotic stress and pathogen infection, as well as the molecular mechanism and possible utilization for genetic breeding. Heat stress transcription factors (Hsfs) are widely known for their common involvement in various abiotic stresses and plant-pathogen interaction. However, no MaHsf has been identified in banana, as well as its possible role. In this study, genome-wide identification and further analyses of evolution, gene structure and conserved motifs showed closer relationship of them in every subgroup. The comprehensive expression profiles of MaHsfs revealed the tissue- and developmental stage-specific or dependent, as well as abiotic and biotic stress-responsive expressions of them. The common regulation of several MaHsfs by abiotic and biotic stress indicated the possible roles of them in plant stress responses. Taken together, this study extended our understanding of MaHsf gene family and identified some candidate MaHsfs with specific expression profiles, which may be used as potential candidates for genetic breeding in banana.

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Epigenetic responses to heat stress at different time scales and the involvement of small RNAs

Cited by 47 publications

References 39 publications

A hit‐and‐run heat shock factor governs sustained histone methylation and transcriptional stress memory

A hit‐and‐run heat shock factor governs sustained histone methylation and transcriptional stress memory

Synthesizing the role of epigenetics in the response and adaptation of species to climate change in freshwater ecosystems

Heat shock transcription factors in banana: genome-wide characterization and expression profile analysis during development and stress response

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