Epigenetic Flexibility Underlying Phenotypic Plasticity

Geng, Yupeng; Gao, Lexuan; Yang, Ji

doi:10.1007/978-3-642-30967-0_5

Cited by 13 publications

(11 citation statements)

References 67 publications

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“…to epigenetic mechanisms and can be important for population persistence in the initial stages of environmental change (Geng et al, 2013;Schlichting and Wund, 2014). Despite growing evidence that the evolution of phenotypic plasticity may be critical for organismal responses to climate change, it is still unclear how selection on plasticity is manifested at the level of the genome.…”

Section: Future Research Directionsmentioning

confidence: 99%

Genetic Constraints, Transcriptome Plasticity, and the Evolutionary Response to Climate Change

Logan

Cox

2020

Front. Genet.

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Section: Future Research Directionsmentioning

confidence: 99%

Genetic Constraints, Transcriptome Plasticity, and the Evolutionary Response to Climate Change

Logan

Cox

2020

Front. Genet.

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“…Genetic and ecological mechanisms that underlie the diversity of plastic responses to environmental cues are widely documented [6]. One possibly involved molecular mechanism that resurfaced in the scientific literature is epigenetics [7,8,9,10,11]. Epigenetic variation is commonly used today to refer to molecular mechanisms influencing gene expression that affect the phenotype without any change of DNA sequence [12], although it historically encompassed a broad range of developmental and phenotypic variation [13].…”

Section: Introductionmentioning

confidence: 99%

Assessing Global DNA Methylation Changes Associated with Plasticity in Seven Highly Inbred Lines of Snapdragon Plants (Antirrhinum majus)

Gourcilleau

Mousset

Latutrie

et al. 2019

Genes

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Genetic and epigenetic variations are commonly known to underlie phenotypic plastic responses to environmental cues. However, the role of epigenetic variation in plastic responses harboring ecological significance in nature remains to be assessed. The shade avoidance response (SAR) of plants is one of the most prevalent examples of phenotypic plasticity. It is a phenotypic syndrome including stem elongation and multiple other traits. Its ecological significance is widely acknowledged, and it can be adaptive in the presence of competition for light. Underlying genes and pathways were identified, but evidence for its epigenetic basis remains scarce. We used a proven and accessible approach at the population level and compared global DNA methylation between plants exposed to regular light and three different magnitudes of shade in seven highly inbred lines of snapdragon plants (Antirrhinum majus) grown in a greenhouse. Our results brought evidence of a strong SAR syndrome for which magnitude did not vary between lines. They also brought evidence that its magnitude was not associated with the global DNA methylation percentage for five of the six traits under study. The magnitude of stem elongation was significantly associated with global DNA demethylation. We discuss the limits of this approach and why caution must be taken with such results. In-depth approaches at the DNA sequence level will be necessary to better understand the molecular basis of the SAR syndrome.

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“…Epigenetics has been proposed as crucial in shaping plant phenotypic plasticity, putatively explaining the rapid and reversible alterations in gene expression in response to environmental changes. This fine-tuning of gene expression can be achieved through DNA methylation, histone modifications and chromatin remodeling (Goldberg et al, 2007 ; Geng et al, 2013 ; Duncan et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Genotype and Environment on Small RNA Profiles in Grapevine Berry

et al. 2016

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Understanding the molecular mechanisms involved in the interaction between the genetic composition and the environment is crucial for modern viticulture. We approached this issue by focusing on the small RNA transcriptome in grapevine berries of the two varieties Cabernet Sauvignon and Sangiovese, growing in adjacent vineyards in three different environments. Four different developmental stages were studied and a total of 48 libraries of small RNAs were produced and sequenced. Using a proximity-based pipeline, we determined the general landscape of small RNAs accumulation in grapevine berries. We also investigated the presence of known and novel miRNAs and analyzed their accumulation profile. The results showed that the distribution of small RNA-producing loci is variable between the two cultivars, and that the level of variation depends on the vineyard. Differently, the profile of miRNA accumulation mainly depends on the developmental stage. The vineyard in Riccione maximizes the differences between the varieties, promoting the production of more than 1000 specific small RNA loci and modulating their expression depending on the cultivar and the maturation stage. In total, 89 known vvi-miRNAs and 33 novel vvi-miRNA candidates were identified in our samples, many of them showing the accumulation profile modulated by at least one of the factors studied. The in silico prediction of miRNA targets suggests their involvement in berry development and in secondary metabolites accumulation such as anthocyanins and polyphenols.

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Epigenetic Flexibility Underlying Phenotypic Plasticity

Cited by 13 publications

References 67 publications

Genetic Constraints, Transcriptome Plasticity, and the Evolutionary Response to Climate Change

Genetic Constraints, Transcriptome Plasticity, and the Evolutionary Response to Climate Change

Assessing Global DNA Methylation Changes Associated with Plasticity in Seven Highly Inbred Lines of Snapdragon Plants (Antirrhinum majus)

The Influence of Genotype and Environment on Small RNA Profiles in Grapevine Berry

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