Plant Epigenetic Stress Memory Induced by Drought: A Physiological and Molecular Perspective

Godwin, James Luke; Farrona, Sara

doi:10.1007/978-1-0716-0179-2_17

Cited by 48 publications

(36 citation statements)

References 91 publications

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“…Recent studies have demonstrated that ABA may contribute to increased drought tolerance related to drought memory effect [39,40]. The stomata of plants, which have once been exposed to drought stress, may also remain partially closed during the recovery period.…”

Section: Introductionmentioning

confidence: 99%

Differential Response of Two Tomato Genotypes, Wild Type cv. Ailsa Craig and Its ABA-Deficient Mutant flacca to Short-Termed Drought Cycles

Živanović

Komić

Nikolić

et al. 2021

Plants

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Two tomato genotypes with constitutively different ABA level, flacca mutant and wild type of Ailsa Craig cv. (WT), were subjected to three repeated drought cycles, with the aim to reveal the role of the abscisic acid (ABA) threshold in developing drought tolerance. Differential responses to drought of two genotypes were obtained: more pronounced stomatal closure, ABA biosynthesis and proline accumulation in WT compared to the mutant were compensated by dry weight accumulation accompanied by transient redox disbalance in flacca. Fourier-transform infrared (FTIR) spectra analysis of isolated cell wall material and morphological parameter measurements on tomato leaves indicated changes in dry weight accumulation and carbon re-allocation to cell wall constituents in flacca, but not in WT. A higher proportion of cellulose, pectin and lignin in isolated cell walls from flacca leaves further increased with repeated drought cycles. Different ABA-dependent stomatal closure between drought cycles implies that acquisition of stomatal sensitivity may be a part of stress memory mechanism developed under given conditions. The regulatory role of ABA in the cell wall restructuring and growth regulation under low leaf potential was discussed with emphasis on the beneficial effects of drought priming in developing differential defense strategies against drought.

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Section: Introductionmentioning

confidence: 99%

Differential Response of Two Tomato Genotypes, Wild Type cv. Ailsa Craig and Its ABA-Deficient Mutant flacca to Short-Termed Drought Cycles

Živanović

Komić

Nikolić

et al. 2021

Plants

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“…Plants can control their responses to repeated stress by altering the expression patterns of the responsive genes. A subset of genes called 'memory genes' are expressed at highly elevated or reduced levels during subsequent dehydration events (Ding et al, 2012;Kinoshita and Seki, 2014;Godwin and Farrona, 2020), thereby enabling plants to respond more promptly and strongly to the repeated drought stress. This response has been referred to as memory, imprinting, priming, training, and acclimation to stress (Bruce et al, 2007;Conrath, 2011;Walter et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Recurrent Drought Conditions Enhance the Induction of Drought Stress Memory Genes in Glycine max L.

Kim

Chae

et al. 2020

Front. Genet.

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Plants remember what they have experienced and are thereby able to confront repeated stresses more promptly and strongly. A subset of the drought responsive genes, called stress memory genes, displayed greatly elevated levels under recurrent drought conditions. To screen for a set of drought stress memory genes in soybean (Glycine max L.), we designed a 180K DNA chip comprising 60-bp probes synthesized in situ to examine 55,589 loci. Through microarray analysis using the DNA chip, we identified 2,162 and 2,385 genes with more than fourfold increases or decreases in transcript levels, respectively, under initial (first) drought stress conditions, when compared with the non-treated control. The transcript levels of the drought-responsive genes returned to basal levels during recovery (watered) states, and 392 and 613 genes displayed more than fourfold elevated or reduced levels, respectively, under subsequent (second) drought conditions, when compared to those observed under the first drought stress conditions. Gene Ontology and MapMan analyses classified the drought-induced memory genes exhibiting elevated levels of transcripts into several functional categories, including those involved in tolerance responses to abiotic stresses, which encode transcription factors, protein phosphatase 2Cs, and late embryogenesis abundant proteins. The drought-repressed memory genes exhibiting reduced levels of transcripts were classified into categories including photosynthesis and primary metabolism. Coexpression network analysis revealed that the soybean drought-induced and-repressed memory genes were equivalent to 172 and 311 Arabidopsis genes, respectively. The soybean drought stress memory genes include genes involved in the dehydration memory responses of Arabidopsis.

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“…In transgenic plants, stress-inducible genes such as LEA, HSPs, AREB/ABFs, bZIPs contributed to enhanced stress tolerance (Ali et al, 2017). In model plants, epigenetic mechanisms such as DNA methylation, and histone modifications, involved in stress responses are reported (Munshi et al, 2015;Mozgova et al, 2019;Godwin and Farrona, 2020); however, studies in field crops are limited (Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Assessment of DNA methylation pattern under drought stress using methylation-sensitive randomly amplified polymorphism analysis in rice

Sapna¹,

Ashwini²,

Ramesh³

et al. 2020

Plant Genet. Resour.

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DNA methylation is known to regulate gene expression when plants are exposed to abiotic stress such as drought. Therefore, insight into DNA methylation pattern would be useful for a better understanding of the expression profile of genes associated with drought adaptation. In the present study, we attempted to analyse the DNA methylation pattern at the whole-genome level and the expression of a few drought-responsive genes in rice under different regimes of soil water status, i.e. puddled, 100 and 60% field capacities (FC). The methylation-sensitive randomly amplified polymorphic DNA analysis was employed to identify DNA methylation pattern. We observed an increase in DNA methylation at 60% FC, and reduced methylation under 100% FC compared to puddled condition. The genes such as protein phosphatases (PP2C) and phenylalanine ammonia-lyase (PAL) having CpG islands in their promoter region had lower expression level under 100 and 60% FC compared to puddled conditions. Heat shock protein 70 (HSP70) and RNA helicase 25 (RH25), with no CpG islands in their promoter region, exhibited enhanced expression compared to puddled plants. In rice, increased DNA methylation seems to be an important mechanism associated with drought responses, which probably regulates the methylation-sensitive gene expression. The drought-induced changes in DNA methylation would contribute for epigenetic mechanism. The study provided evidence to argue that drought-induced increased methylation might be one of the major mechanisms associated with acclimation responses in field crops like rice.

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Plant Epigenetic Stress Memory Induced by Drought: A Physiological and Molecular Perspective

Cited by 48 publications

References 91 publications

Differential Response of Two Tomato Genotypes, Wild Type cv. Ailsa Craig and Its ABA-Deficient Mutant flacca to Short-Termed Drought Cycles

Differential Response of Two Tomato Genotypes, Wild Type cv. Ailsa Craig and Its ABA-Deficient Mutant flacca to Short-Termed Drought Cycles

Recurrent Drought Conditions Enhance the Induction of Drought Stress Memory Genes in Glycine max L.

Assessment of DNA methylation pattern under drought stress using methylation-sensitive randomly amplified polymorphism analysis in rice

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