Epigenetic variation in mangrove plants occurring in contrasting natural environment.

<h4>Background</h4>Epigenetic modifications, such as cytosine methylation, are inherited in plant species and may occur in response to biotic or abiotic stress, affecting gene expression without changing genome sequence. Laguncularia racemosa, a mangrove species, occurs in naturally cont...

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Autores principales:	Catarina Fonseca Lira-Medeiros, Christian Parisod, Ricardo Avancini Fernandes, Camila Souza Mata, Monica Aires Cardoso, Paulo Cavalcanti Gomes Ferreira
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/94db37844ed54a93a2b6601463d8198d
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spelling	oai:doaj.org-article:94db37844ed54a93a2b6601463d8198d2021-12-02T20:22:09ZEpigenetic variation in mangrove plants occurring in contrasting natural environment.1932-620310.1371/journal.pone.0010326https://doaj.org/article/94db37844ed54a93a2b6601463d8198d2010-04-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20436669/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Epigenetic modifications, such as cytosine methylation, are inherited in plant species and may occur in response to biotic or abiotic stress, affecting gene expression without changing genome sequence. Laguncularia racemosa, a mangrove species, occurs in naturally contrasting habitats where it is subjected daily to salinity and nutrient variations leading to morphological differences. This work aims at unraveling how CpG-methylation variation is distributed among individuals from two nearby habitats, at a riverside (RS) or near a salt marsh (SM), with different environmental pressures and how this variation is correlated with the observed morphological variation.<h4>Principal findings</h4>Significant differences were observed in morphological traits such as tree height, tree diameter, leaf width and leaf area between plants from RS and SM locations, resulting in smaller plants and smaller leaf size in SM plants. Methyl-Sensitive Amplified Polymorphism (MSAP) was used to assess genetic and epigenetic (CpG-methylation) variation in L. racemosa genomes from these populations. SM plants were hypomethylated (14.6% of loci had methylated samples) in comparison to RS (32.1% of loci had methylated samples). Within-population diversity was significantly greater for epigenetic than genetic data in both locations, but SM also had less epigenetic diversity than RS. Frequency-based (G(ST)) and multivariate (beta(ST)) methods that estimate population structure showed significantly greater differentiation among locations for epigenetic than genetic data. Co-Inertia analysis, exploring jointly the genetic and epigenetic data, showed that individuals with similar genetic profiles presented divergent epigenetic profiles that were characteristic of the population in a particular environment, suggesting that CpG-methylation changes may be associated with environmental heterogeneity.<h4>Conclusions</h4>In spite of significant morphological dissimilarities, individuals of L. racemosa from salt marsh and riverside presented little genetic but abundant DNA methylation differentiation, suggesting that epigenetic variation in natural plant populations has an important role in helping individuals to cope with different environments.Catarina Fonseca Lira-MedeirosChristian ParisodRicardo Avancini FernandesCamila Souza MataMonica Aires CardosoPaulo Cavalcanti Gomes FerreiraPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 4, p e10326 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Catarina Fonseca Lira-Medeiros Christian Parisod Ricardo Avancini Fernandes Camila Souza Mata Monica Aires Cardoso Paulo Cavalcanti Gomes Ferreira Epigenetic variation in mangrove plants occurring in contrasting natural environment.
description	<h4>Background</h4>Epigenetic modifications, such as cytosine methylation, are inherited in plant species and may occur in response to biotic or abiotic stress, affecting gene expression without changing genome sequence. Laguncularia racemosa, a mangrove species, occurs in naturally contrasting habitats where it is subjected daily to salinity and nutrient variations leading to morphological differences. This work aims at unraveling how CpG-methylation variation is distributed among individuals from two nearby habitats, at a riverside (RS) or near a salt marsh (SM), with different environmental pressures and how this variation is correlated with the observed morphological variation.<h4>Principal findings</h4>Significant differences were observed in morphological traits such as tree height, tree diameter, leaf width and leaf area between plants from RS and SM locations, resulting in smaller plants and smaller leaf size in SM plants. Methyl-Sensitive Amplified Polymorphism (MSAP) was used to assess genetic and epigenetic (CpG-methylation) variation in L. racemosa genomes from these populations. SM plants were hypomethylated (14.6% of loci had methylated samples) in comparison to RS (32.1% of loci had methylated samples). Within-population diversity was significantly greater for epigenetic than genetic data in both locations, but SM also had less epigenetic diversity than RS. Frequency-based (G(ST)) and multivariate (beta(ST)) methods that estimate population structure showed significantly greater differentiation among locations for epigenetic than genetic data. Co-Inertia analysis, exploring jointly the genetic and epigenetic data, showed that individuals with similar genetic profiles presented divergent epigenetic profiles that were characteristic of the population in a particular environment, suggesting that CpG-methylation changes may be associated with environmental heterogeneity.<h4>Conclusions</h4>In spite of significant morphological dissimilarities, individuals of L. racemosa from salt marsh and riverside presented little genetic but abundant DNA methylation differentiation, suggesting that epigenetic variation in natural plant populations has an important role in helping individuals to cope with different environments.
format	article
author	Catarina Fonseca Lira-Medeiros Christian Parisod Ricardo Avancini Fernandes Camila Souza Mata Monica Aires Cardoso Paulo Cavalcanti Gomes Ferreira
author_facet	Catarina Fonseca Lira-Medeiros Christian Parisod Ricardo Avancini Fernandes Camila Souza Mata Monica Aires Cardoso Paulo Cavalcanti Gomes Ferreira
author_sort	Catarina Fonseca Lira-Medeiros
title	Epigenetic variation in mangrove plants occurring in contrasting natural environment.
title_short	Epigenetic variation in mangrove plants occurring in contrasting natural environment.
title_full	Epigenetic variation in mangrove plants occurring in contrasting natural environment.
title_fullStr	Epigenetic variation in mangrove plants occurring in contrasting natural environment.
title_full_unstemmed	Epigenetic variation in mangrove plants occurring in contrasting natural environment.
title_sort	epigenetic variation in mangrove plants occurring in contrasting natural environment.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/94db37844ed54a93a2b6601463d8198d
work_keys_str_mv	AT catarinafonsecaliramedeiros epigeneticvariationinmangroveplantsoccurringincontrastingnaturalenvironment AT christianparisod epigeneticvariationinmangroveplantsoccurringincontrastingnaturalenvironment AT ricardoavancinifernandes epigeneticvariationinmangroveplantsoccurringincontrastingnaturalenvironment AT camilasouzamata epigeneticvariationinmangroveplantsoccurringincontrastingnaturalenvironment AT monicaairescardoso epigeneticvariationinmangroveplantsoccurringincontrastingnaturalenvironment AT paulocavalcantigomesferreira epigeneticvariationinmangroveplantsoccurringincontrastingnaturalenvironment
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Epigenetic variation in mangrove plants occurring in contrasting natural environment.

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