Epigenetic regulation in plant abiotic stress responses

Journal of Integrative Plant Biology, Journal Year: 2019, Volume and Issue: 62(5), P. 563 - 580

Published: Dec. 24, 2019

In eukaryotic cells, gene expression is greatly influenced by the dynamic chromatin environment. Epigenetic mechanisms, including covalent modifications to DNA and histone tails accessibility of chromatin, create various states for stress-responsive that important adaptation harsh environmental conditions. Recent studies have revealed many epigenetic factors participate in abiotic stress responses, are changed when plants exposed stressful environments. this review, we summarize recent progress on cross-talk between response pathways regulatory plants. Our review focuses regulation plant responses extreme temperatures, drought, salinity, hormone abscisic acid, nutrient limitations ultraviolet stress, mechanisms memory.

Language: Английский

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Stress priming, memory, and signalling in plants

Plant Cell & Environment, Journal Year: 2019, Volume and Issue: 42(3), P. 753 - 761

Published: Feb. 19, 2019

Abstract Plants need to cope with changing environmental conditions, be it variable light or temperature, different availability of water nutrients, attack by pathogens insects. Some these conditions can become stressful and require strong countermeasures ensure plant survival. have evolved numerous distinct sensing signalling mechanisms perceive respond appropriately a variety stresses. Because the unpredictable nature stresses, resource‐saving stress response are inducible activated only upon experience. Furthermore, plants which they remember past events prime their responses in order react more rapidly strongly recurrent stress. Research over last decade has revealed this information storage retrieval, include epigenetic regulation, transcriptional priming, primed conformation proteins, specific hormonal metabolic signatures. There is also increasing understanding ecological constraints relevance priming memory. This special issue presents research articles reviews addressing various aspects exciting growing field research. Here, we introduce topic referring published issue, outline open questions future directions

Language: Английский

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Plant Immunity: From Signaling to Epigenetic Control of Defense

Trends in Plant Science, Journal Year: 2018, Volume and Issue: 23(9), P. 833 - 844

Published: June 30, 2018

Language: Английский

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Root Growth Adaptation to Climate Change in Crops

Frontiers in Plant Science, Journal Year: 2020, Volume and Issue: 11

Published: May 8, 2020

Climate change is threatening crop productivity worldwide and new solutions to adapt crops these environmental changes are urgently needed. Elevated temperatures driven by climate affect developmental physiological plant processes that, ultimately, impact on yield quality. Plant roots responsible for water nutrients uptake, but in soil alter this process limiting growth. With the predicted variable climatic forecast, development of an efficient root system better adapted changing conditions crucial enhancing productivity. Root traits associated with improved adaptation rising increasingly being analysed obtain more suitable varieties. In review, we will summarize current knowledge about effect increasing growth their yield. First, describe main alterations architecture that different undergo response warmer soils. Then, outline coordinated metabolic taking place aerial parts modulate global increased temperatures. We discuss some regulatory mechanisms controlling soils, including activation heat oxidative pathways prevent damage cells disruption growth; interplay between hormonal gene expression protein homeostasis. also consider field, usually other abiotic biotic stresses such as drought, salinity, nutrient deficiencies, pathogen infections. present recent advances how able integrate respond complex stimuli order environment. Finally, prospects

Language: Английский

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Pectin Methylesterases: Cell Wall Remodeling Proteins Are Required for Plant Response to Heat Stress

Frontiers in Plant Science, Journal Year: 2018, Volume and Issue: 9

Published: Nov. 6, 2018

Heat stress (HS) is expected to be of increasing worldwide concern in the near future, especially with regard crop yield and quality as a consequence rising or varying temperatures result global climate change. HS response (HSR) highly conserved mechanism among different organisms but shows remarkable complexity unique features plants. The transcriptional regulation HSR controlled by transcription factors (HSFs) which allow activation HS-responsive genes, proteins (HSPs) are best characterized. Cell wall remodeling constitutes an important component plant responses maintain overall function growth; however, little known about connection between cell HSR. Pectin controls porosity has been shown exhibit structural variation during growth HS. methylesterases (PMEs) present multigene families encode isoforms action patterns removal methyl esters influencing properties wall. We aimed elucidate how walls respond certain environmental cues through wall-modifying modifications machinery. An overview recent findings shed light on PMEs contribute change cell-wall composition/structure. fine-scale modulation apoplastic calcium ions (Ca2+) content could mediated abiotic for both assembly disassembly pectic network. In particular, this prevalent guard regulating plasticity well stromal aperture size, comprise critical determinants adaptation These insights provide foundation further research reveal details machinery stress-responsive targets strategies facilitate adaptation.

Language: Английский

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An H3K27me3 demethylase-HSFA2 regulatory loop orchestrates transgenerational thermomemory in Arabidopsis

Cell Research, Journal Year: 2019, Volume and Issue: 29(5), P. 379 - 390

Published: Feb. 18, 2019

Global warming has profound effects on plant growth and fitness. Plants have evolved sophisticated epigenetic machinery to respond quickly heat, exhibit transgenerational memory of the heat-induced release post-transcriptional gene silencing (PTGS). However, how thermomemory is transmitted progeny physiological relevance are elusive. Here we show that HEAT SHOCK TRANSCRIPTION FACTOR A2 (HSFA2) directly activates H3K27me3 demethylase RELATIVE OF EARLY FLOWERING 6 (REF6), which in turn derepresses HSFA2. REF6 HSFA2 establish a heritable feedback loop, activate an E3 ubiquitin ligase, SUPPRESSOR GENE SILENCING 3 (SGS3)-INTERACTING PROTEIN 1 (SGIP1). SGIP1-mediated SGS3 degradation leads inhibited biosynthesis trans-acting siRNA (tasiRNA). The REF6-HSFA2 loop reduced tasiRNA converge HEAT-INDUCED TAS1 TARGET 5 (HTT5), drives early flowering but attenuates immunity. Thus, heat induces phenotypes via coordinated network involving histone demethylases, transcription factors, tasiRNAs, ensuring reproductive success stress adaptation.

Language: Английский

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Salt-induced recruitment of specific root-associated bacterial consortium capable of enhancing plant adaptability to salt stress

The ISME Journal, Journal Year: 2021, Volume and Issue: 15(10), P. 2865 - 2882

Published: April 19, 2021

Language: Английский

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Physiological and Transcriptome Analyses Reveal Short-Term Responses and Formation of Memory Under Drought Stress in Rice

Frontiers in Genetics, Journal Year: 2019, Volume and Issue: 10

Published: Feb. 7, 2019

In some plants, exposure to stress can induce a memory response, which appears play an important role in adaptation recurrent environments. However, whether rice exhibits drought and the molecular mechanisms that might underlie this process have remained unclear. Here, we ensured was established after cycles of mild re-watering treatment, studied gene expression by whole-transcriptome strand-specific RNA sequencing (ssRNA-seq). We detected 6,885 transcripts 238 lncRNAs involved grouped into 16 distinct patterns. Notably, identified genes dosage generally did not respond initial treatment. Our results demonstrate be developed under appropriate water deficient stress, lncRNA, DNA methylation endogenous phytohormones (especially abscisic acid) participate short-term memory, possibly acting as factors activate drought-related pathways such photosynthesis proline biosynthesis, subsequent stresses.

Language: Английский

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Priming crops for the future: rewiring stress memory

Trends in Plant Science, Journal Year: 2021, Volume and Issue: 27(7), P. 699 - 716

Published: Dec. 11, 2021

The agricultural sector must produce resilient and climate-smart crops to meet the increasing needs of global food production. Recent advancements in elucidating mechanistic basis plant stress memory have provided new opportunities for crop improvement. Stress memory-coordinated changes at organismal, cellular, various omics levels prepare plants be more responsive reoccurring within or across generation(s). exposure a primary stress, priming, can also elicit beneficial impact when encountering secondary abiotic biotic through convergence synergistic signalling pathways, referred as cross-stress tolerance. 'Rewired plants' with provide means stimulate adaptable responses, safeguard reproduction, engineer future.

Language: Английский

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Heteromeric HSFA2/HSFA3 complexes drive transcriptional memory after heat stress in Arabidopsis

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: June 8, 2021

Abstract Adaptive plasticity in stress responses is a key element of plant survival strategies. For instance, moderate heat (HS) primes to acquire thermotolerance, which allows subsequent more severe HS conditions. Acquired thermotolerance actively maintained over several days (HS memory) and involves the sustained induction memory-related genes. Here we show that FORGETTER3 / HEAT SHOCK TRANSCRIPTION FACTOR A3 ( FGT3 HSFA3 ) specifically required for physiological memory maintaining high memory-gene expression during following exposure. mediates by direct transcriptional activation genes after return normal growth temperatures. binds HSFA2, vivo both proteins form heteromeric complexes with additional HSFs. Our results indicate only containing HSFA2 efficiently promote positively influencing histone H3 lysine 4 (H3K4) hyper-methylation. In summary, our work defines major HSF complex controlling elucidates dynamics somatic memory.

Language: Английский

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