DNA Methylation and Plant Stress Responses

Deng, Junming; Kou, Shuyan; Zhang, Cuiping; Zhou, Qian; Li, Ping; Yuan, Pingrong

doi:10.4172/2329-955x.1000182

Cited by 8 publications

(5 citation statements)

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“…Hence, the mitigated singlet oxygen-mediated PCD likely upstream of jasmonate would reduce the deleterious effects of ROS in downy oak during water stress. In many plant species, drought was accompanied by DNA methylation [ 50 ]. The downregulation of methylation-dependent chromatin silencing is in accordance with the need for the recruitment of specific transcripts in response to aridification.…”

Section: Discussionmentioning

confidence: 99%

Response of Downy Oak (Quercus pubescens Willd.) to Climate Change: Transcriptome Assembly, Differential Gene Analysis and Targeted Metabolomics

Mévy

Loriod

Liu

et al. 2020

Plants

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Global change scenarios in the Mediterranean basin predict a precipitation reduction within the coming hundred years. Therefore, increased drought will affect forests both in terms of adaptive ecology and ecosystemic services. However, how vegetation might adapt to drought is poorly understood. In this report, four years of climate change was simulated by excluding 35% of precipitation above a downy oak forest. RNASeq data allowed us to assemble a genome-guided transcriptome. This led to the identification of differentially expressed features, which was supported by the characterization of target metabolites using a metabolomics approach. We provided 2.5 Tb of RNASeq data and the assembly of the first genome guided transcriptome of Quercus pubescens. Up to 5724 differentially expressed transcripts were obtained; 42 involved in plant response to drought. Transcript set enrichment analysis showed that drought induces an increase in oxidative pressure that is mitigated by the upregulation of ubiquitin-like protein protease, ferrochelatase, oxaloacetate decarboxylase and oxo-acid-lyase activities. Furthermore, the downregulation of auxin biosynthesis and transport, carbohydrate storage metabolism were observed as well as the concomitant accumulation of metabolites, such as oxalic acid, malate and isocitrate. Our data suggest that early metabolic changes in the resistance of Q. pubescens to drought involve a tricarboxylic acid (TCA) cycle shunt through the glyoxylate pathway, galactose metabolism by reducing carbohydrate storage and increased proteolytic activity.

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Section: Discussionmentioning

confidence: 99%

Response of Downy Oak (Quercus pubescens Willd.) to Climate Change: Transcriptome Assembly, Differential Gene Analysis and Targeted Metabolomics

Mévy

Loriod

Liu

et al. 2020

Plants

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“…DNA methylation, chromatin modifications, or regulation by non-coding RNAs, are implicated in the formation of the multitude of plant responses to various environmental cues without altering DNA sequences and contribute to the plant defence reactions and proper plant development. Dynamic changes in DNA methylation is an important epigenetic phenomenon that have received considerable attention as an epigenetic mechanism regulating plant development and stress responses (Bartels et al 2018;Deng et al 2018). Using of 5A for studying functions of variations in DNA methylation is known to lead for global DNA genome hypomethylation revealed a substantial number of upregulated genes, with an overrepresentation of transposable element genes as revealed by transcriptome analyses (Griffin et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Effect of 5-azacytidine induced DNA demethylation on abiotic stress tolerance in Arabidopsis thaliana

Ogneva¹,

Suprun²,

Dubrovina³

et al. 2019

Plant Prot. Sci.

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The effect of 5-azacytidine (5A)-induced DNA hypomethylation on the growth and abiotic stress tolerance of Arabidopsis thaliana were analysed. Growth analysis revealed that aqueous solutions of 5A added to the soil did not affect the fresh and dry biomass accumulation but led to a higher percentage of flowering A. thaliana plants after four weeks of cultivation. The 5A treatment considerably lowered survival rates of Arabidopsis plants under high soil salinity, heat stress, and drought, while it did not affect the survival rates after freezing stress. 5A eliminated the stimulatory effect of the heat and drought stresses on the transcriptional levels of a number of stress-inducible genes, such as DREB1, LEA, SOS1, or RD29A. A less clear but similar trend has been detected for the effect of 5A on expression of the stress-inducible genes under salt and cold stresses. The data indicate that DNA methylation is an important mechanism regulating plant abiotic stress resistance.

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“…Studies on moss Physcomitrella patens and Arabidopsis species reported that ABA represses gene expression through DNA methylation of the promoter regions [129,130]. In another investigation on rice cultivars exposed to drought and salt stresses, it was found that methylation extent was significantly different across the cultivars, and several methylated regions were linked with differential expression of genes necessary for abiotic stress response, with a positive correlation found among hypermethylated and small RNA [131,132]. In a study on crown gall-infected Arabidopsis, during tumor development, an epigenetic process, DNA methylation-controlled crown gall formation through ABA to mediate drought stress tolerance [133].…”

Section: Adaptation To Droughtmentioning

confidence: 98%

In Response to Abiotic Stress, DNA Methylation Confers EpiGenetic Changes in Plants

Akhter

Ali

et al. 2021

Plants

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Epigenetics involves the heritable changes in patterns of gene expression determined by developmental and abiotic stresses, i.e., drought, cold, salinity, trace metals, and heat. Gene expression is driven by changes in DNA bases, histone proteins, the biogenesis of ncRNA, and changes in the nucleotide sequence. To cope with abiotic stresses, plants adopt certain changes driven by a sophisticated biological system. DNA methylation is a primary mechanism for epigenetic variation, which can induce phenotypic alterations in plants under stress. Some of the stress-driven changes in plants are temporary, while some modifications may be stable and inheritable to the next generations to allow them to cope with such extreme stress challenges in the future. In this review, we discuss the pivotal role of epigenetically developed phenotypic characteristics in plants as an evolutionary process participating in adaptation and tolerance responses to abiotic and biotic stresses that alter their growth and development. We emphasize the molecular process underlying changes in DNA methylation, differential variation for different species, the roles of non-coding RNAs in epigenetic modification, techniques for studying DNA methylation, and its role in crop improvement in tolerance to abiotic stress (drought, salinity, and heat). We summarize DNA methylation as a significant future research priority for tailoring crops according to various challenging environmental issues.

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DNA Methylation and Plant Stress Responses

Cited by 8 publications

References 0 publications

Response of Downy Oak (Quercus pubescens Willd.) to Climate Change: Transcriptome Assembly, Differential Gene Analysis and Targeted Metabolomics

Response of Downy Oak (Quercus pubescens Willd.) to Climate Change: Transcriptome Assembly, Differential Gene Analysis and Targeted Metabolomics

Effect of 5-azacytidine induced DNA demethylation on abiotic stress tolerance in Arabidopsis thaliana

In Response to Abiotic Stress, DNA Methylation Confers EpiGenetic Changes in Plants

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