Epigenetic Variability in the Genetically Uniform Forest Tree Species Pinus pinea L

Sáez-Laguna, Enrique; Guevara, M. Ángeles; Díaz, Luis-Manuel; Sánchez‐Gómez, David; Collada, Carmen; Aranda, Ismael; Cervera, Marı́a Teresa

doi:10.1371/journal.pone.0103145

Cited by 74 publications

(54 citation statements)

References 69 publications

(83 reference statements)

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“…A remarkable phenotypic plasticity in functional traits has also been described for stone pine when grown under restricted water availability conditions (Sánchez-Gómez et al 2011). A high degree of cytosine methylation has been found in P. pinea, which suggests a potential epigenetic regulation of gene expression and variation in phenotypic traits to improve the fitness of this species under different environmental conditions (Sáez-Laguna et al 2014). In fact, P. pinea is considered the most drought-resistant Mediterranean pine (Fady 2012).…”

Section: Introductionmentioning

confidence: 91%

Comparative analysis of Pinus pinea and Pinus pinaster dehydrins under drought stress

Perdiguero

Soto

Collada

2015

Tree Genetics & Genomes

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Maritime pine (Pinus pinaster) and stone pine (P. pinea) are two of the most drought-resistant Mediterranean trees. Several studies have analysed the response to drought stress at the molecular level in maritime pine, including the identification of drought-induced genes, transcriptomic analysis during dehydration or in-depth characterisation and diversity studies of specific candidate genes. On the contrary, much less information is available for stone pine, and notwithstanding being a closely related species, significant differences in the transcription profile of several genes during drought, evaluated using microarrays, were reported recently for these two species. In this study, we focus on P. pinea dehydrins, one of the most important gene families expressed in response to drought. We have identified eight dehydrin genes in P. pinea, orthologous to the ones previously described in P. pinaster, and have compared their transcription profiles under drought stress. For this purpose, we imposed a severe and prolonged drought treatment to P. pinea seedlings and analysed the expression pattern of proteins from the dehydrin family in needles, stems and roots. The complete open reading frames of these genes were amplified from cDNA and genomic DNA, and their intron/exon structures were determined. qRT-PCR was performed to analyse their expression pattern in needles, stems and roots during the drought treatment. Remarkable differences between the two species have been detected in the transcript patterns of five out of the eight genes, which could be related with the different behaviours described for these species under drought stress.

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Section: Introductionmentioning

confidence: 91%

Comparative analysis of Pinus pinea and Pinus pinaster dehydrins under drought stress

Perdiguero

Soto

Collada

2015

Tree Genetics & Genomes

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“…However, this is a widespread species that grows under diverse environmental conditions, indicating that genetic variability does not entirely explain its adaptability (Vendramin et al, 2008;Soto et al, 2010). In fact, the successful adaptation of P. pinea seems to depend largely on the variability of phenotypic traits, which is high in this species (Mutke et al, 2010(Mutke et al, , 2013Sánchez-Gómez et al, 2011;Sáez-Laguna et al, 2014). Thus, phenotypic plasticity may explain the observed variability of the growth response to climate in different regions, that could suggest the capacity of P. pinea to adapt the annual distribution of cambial activity depending on site-specific climatic conditions.…”

Section: Spatiotemporal Variability Of Growth-climate Relationshipsmentioning

confidence: 99%

Spatiotemporal variability of stone pine ( Pinus pinea L.) growth response to climate across the Iberian Peninsula

et al. 2016

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Climate warming and increasing aridity have impacted diverse ecosystems in the Mediterranean region since at least the 1970s. Pinus pinea L. has significant environmental and socio-economic importance for the Iberian Peninsula, so a detailed understanding of its response to climate change is necessary to predict its status under future climatic conditions. However, variability of climate and uncertainties in dendroclimatological approach complicate the understanding of forest growth dynamics. We use an ensemble approach to analyze growthclimate responses of P. pinea trees from five sites along a latitudinal gradient in Spain over time. The growth responses to April-June precipitation totals were stronger in the north than in the south. Since the 1950s, the sensitivity of growth to April-June precipitation increased in the north and decreased in the south.Meteorological drought usually started in May in the southern sites, but in June-July in the northern sites. The water deficit in the southern sites is thus greater and more limiting for tree growth, and this likely accounts for the lower growth sensitivity during these months. Our results indicate that P. pinea has a high degree of plasticity, suggesting the species will withstand changing climatic conditions. However, growth response to drought regimes varies among P. pinea populations, suggesting that different populations have different capacities for acclimation to warmer and drier climate, and this may influence future vegetation composition.

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“…Epigenetic diversity can generate massive heritable variation of ecologically relevant plant traits such as root allocation, drought tolerance and nutrient plasticity (Zhang, Fischer, Colot, & Bossdorf, 2013), and it appears to increase the productivity and stability of plant populations in Arabidopsis thaliana under artificial conditions (Latzel et al., 2013). An increasing number of studies have also demonstrated the common existence and significant role of epigenetic variation in plant populations of herbs (Foust et al., 2016; Herrera, Medrano, & Bazaga, 2014; Medrano et al., 2014; Preite et al., 2015; Schulz, Eckstein, & Durka, 2014), shrubs (Avramidou, Ganopoulos, Doulis, Tsaftaris, & Aravanopoulos, 2015; Herrera & Bazaga, 2013, 2016), and trees (Guarino, Cicatelli, Brundu, Heinze, & Castiglione, 2015; Gugger, Fitz‐Gibbon, PellEgrini, & Sork, 2016; Lira‐Medeiros et al., 2010; Platt, Gugger, Pellegrini, & Sork, 2015; Sáez‐Laguna et al., 2014) under natural conditions. Therefore, epigenetic variation can be a very important mechanism for invasive plant success in a broad range of environments (Douhovnikoff & Dodd, 2014; Richards, Schrey, & Pigliucci, 2012).…”

Section: Introductionmentioning

confidence: 99%

Genetic and epigenetic changes during the invasion of a cosmopolitan species (Phragmites australis)

Liu

Cuiping

Liu

et al. 2018

Ecology and Evolution

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While many introduced invasive species can increase genetic diversity through multiple introductions and/or hybridization to colonize successfully in new environments, others with low genetic diversity have to persist by alternative mechanisms such as epigenetic variation. Given that Phragmites australis is a cosmopolitan reed growing in a wide range of habitats and its invasion history, especially in North America, has been relatively well studied, it provides an ideal system for studying the role and relationship of genetic and epigenetic variation in biological invasions. We used amplified fragment length polymorphism (AFLP) and methylation‐sensitive (MS) AFLP methods to evaluate genetic and epigenetic diversity and structure in groups of the common reed across its range in the world. Evidence from analysis of molecular variance (AMOVA) based on AFLP and MS‐AFLP data supported the previous conclusion that the invasive introduced populations of P. australis in North America were from European and Mediterranean regions. In the Gulf Coast region, the introduced group harbored a high level of genetic variation relative to originating group from its native location, and it showed epigenetic diversity equal to that of the native group, if not higher, while the introduced group held lower genetic diversity than the native. In the Great Lakes region, the native group displayed very low genetic and epigenetic variation, and the introduced one showed slightly lower genetic and epigenetic diversity than the original one. Unexpectedly, AMOVA and principal component analysis did not demonstrate any epigenetic convergence between native and introduced groups before genetic convergence. Our results suggested that intertwined changes in genetic and epigenetic variation were involved in the invasion success in North America. Although our study did not provide strong evidence proving the importance of epigenetic variation prior to genetic, it implied the similar role of stable epigenetic diversity to genetic diversity in the adaptation of P. australis to local environment.

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Epigenetic Variability in the Genetically Uniform Forest Tree Species Pinus pinea L

Cited by 74 publications

References 69 publications

Comparative analysis of Pinus pinea and Pinus pinaster dehydrins under drought stress

Comparative analysis of Pinus pinea and Pinus pinaster dehydrins under drought stress

Spatiotemporal variability of stone pine ( Pinus pinea L.) growth response to climate across the Iberian Peninsula

Genetic and epigenetic changes during the invasion of a cosmopolitan species (Phragmites australis)

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