Effect of hypermethylation of CCWGG sequences in DNA of Mesembryanthemum crystallinum plants on their adaptation to salt stress

Dyachenko, O. V.; Захарченко, Н. С.; Шевчук, Т. В.; Bohnert, Hans J.; Cushman, John C.; Buryanov, Yа. I.

doi:10.1134/s000629790604016x

Cited by 106 publications

(54 citation statements)

References 9 publications

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“…Selective hypermethylation on salt stress adaptation in the extremophile Crassulacean acid metabolism (CAM) plant Mesembryanthemum crystallinum , for example, indicates both specific and global epigenetic restructuring in plant abiotic stress response regulation [57]. …”

Section: Epigenetic Modifications and Non-coding Rnasmentioning

confidence: 99%

Life at the extreme: lessons from the genome

Dassanayake

Bohnert

et al. 2012

Genome Biol

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Section: Epigenetic Modifications and Non-coding Rnasmentioning

confidence: 99%

Life at the extreme: lessons from the genome

Dassanayake

Bohnert

et al. 2012

Genome Biol

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“…Several other papers suggest that changes in DNA methylation are required for stress protection. Dyachenko et al [2006] demonstrated a two-fold increase in CpNpG methylation level in nuclear genome of M. crystallinum plants exposed to high salinity conditions. The increase in methylation was associated with switching from C3-photosynthesis to CAM metabolism.…”

Section: Dna Methylation Is the Primary Epigenetic Markmentioning

confidence: 99%

Epigenetic control of plant stress response

Boyko

Kovalchuk

2007

Environ and Mol Mutagen

304

194

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Living organisms have the clearly defined strategies of stress response. These strategies are predefined by a genetic make-up of the organism and depend on a complex regulatory network of molecular interactions. Although in most cases, the plant response to stress based on the mechanisms of tolerance, resistance, and avoidance has clearly defined metabolic pathways, the ability to acclimate/adapt after a single generation exposure previously observed in several studies (Boyko A et al. [2007]: Nucleic Acids Res 35:1714-1725; Boyko and Kovalchuk, unpublished data), represents an interesting phenomenon that cannot be explained by Mendelian genetics. The latest findings in the field of epigenetics and the process of a reversible control over gene expression and inheritance lead to believe that organisms, especially plants, may have a flexible short-term strategy of the response to stress. Indeed, the organisms that can modify gene expression reversibly have an advantage in evolutionary terms, since they can avoid unnecessary excessive rearrangements and population diversification. This review covers various epigenetic processes involved in plant stress response. We focus on the mechanisms of DNA methylation and histone modifications responsible for the protection of somatic cells and inheritance of stress memories. Environ. Mol. Mutagen. 49:61-72, 2008. V V C 2007 Wiley-Liss, Inc.

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“…For example, exposure to salt promotes DNA methylation in Mesembryanthemum crystallinum through the enhancement of DNA methyltransferase activity (Dyachenko et al, 2006). In addition, the genomes of some saline-tolerant cotton cultivars are hyper-methylated in comparison with the genomes of salinesusceptible cultivars (Wang et al, 2015a).…”

Section: Discussionmentioning

confidence: 99%

Salt stress alters DNA methylation levels in alfalfa (Medicago spp)

Al-Bahry¹,

Victor²,

Al-Lawati³

et al. 2016

Genet. Mol. Res.

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ABSTRACT. Modification of DNA methylation status is one of the mechanisms used by plants to adjust gene expression at both the transcriptional and posttranscriptional levels when plants are exposed to suboptimal conditions. Under abiotic stress, different cultivars often show heritable phenotypic variation accompanied by epigenetic polymorphisms at the DNA methylation level. This variation may provide the raw materials for plant breeding programs that aim to enhance abiotic stress tolerance, including salt tolerance. In this study, methylation-sensitive amplified polymorphism (MSAP) analysis was used to assess cytosine methylation levels in alfalfa (Medicago spp) roots exposed to increasing NaCl concentrations (0.0, 8.0, 12.0, and 20.0 dS/m). Eleven indigenous landraces were analyzed, in addition to a salt-tolerant cultivar that was used as a control. There was a slight increase in DNA methylation upon exposure to high levels of soil salinity. Phylogenetic analysis using MSAP showed epigenetic variation within and between the alfalfa landraces when exposed to saline conditions. Based on MSAP and enzyme-linked immunosorbent assay results, we found that salinity increased global DNA methylation status, particularly in plants exposed to the highest level of salinity (20 dS/m). Quantitative reverse transcription-polymerase chain reaction indicated that this might be mediated by the overexpression of methyltransferase homolog genes after exposure to saline conditions. DNA demethylation using 5-azacytidine reduced seedling lengths and dry and fresh weights, indicating a possible decrease in salinity tolerance. These results suggest that salinity affects DNA methylation flexibility.

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Effect of hypermethylation of CCWGG sequences in DNA of Mesembryanthemum crystallinum plants on their adaptation to salt stress

Cited by 106 publications

References 9 publications

Life at the extreme: lessons from the genome

Life at the extreme: lessons from the genome

Epigenetic control of plant stress response

Salt stress alters DNA methylation levels in alfalfa (Medicago spp)

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