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Publication Type J
Authors Foust, CM; Preite, V; Schrey, AW; Alvarez, M; Robertson, MH; Verhoeven, KJF; Richards, CL
Author Full Name Foust, C. M.; Preite, V.; Schrey, A. W.; Alvarez, M.; Robertson, M. H.; Verhoeven, K. J. F.; Richards, C. L.
Title Genetic and epigenetic differences associated with environmental gradients in replicate populations of two salt marsh perennials
Source MOLECULAR ECOLOGY
Language English
Document Type Article
Author Keywords DNA methylation; environmental gradient; MS-AFLP; partial Mantel
Keywords Plus PLANT PHENOTYPIC PLASTICITY; SPARTINA-ALTERNIFLORA LOISEL; MULTILOCUS GENOTYPE DATA; DNA METHYLATION; ECOLOGICAL EPIGENETICS; BORRICHIA-FRUTESCENS; ADAPTIVE PLASTICITY; AVENA-BARBATA; EVOLUTION; DIVERSITY
Abstract While traits and trait plasticity are partly genetically based, investigating epigenetic mechanisms may provide more nuanced understanding of the mechanisms underlying response to environment. Using AFLP and methylation-sensitive AFLP, we tested the hypothesis that differentiation to habitats along natural salt marsh environmental gradients occurs at epigenetic, but not genetic loci in two salt marsh perennials. We detected significant genetic and epigenetic structure among populations and among subpopulations, but we found multilocus patterns of differentiation to habitat type only in epigenetic variation for both species. In addition, more epigenetic than genetic loci were correlated with habitat in both species. When we analysed genetic and epigenetic variation simultaneously with partial Mantel, we found no correlation between genetic variation and habitat and a significant correlation between epigenetic variation and habitat in Spartina alterniflora. In Borrichia frutescens, we found significant correlations between epigenetic and/or genetic variation and habitat in four of five populations when populations were analysed individually, but there was no significant correlation between genetic or epigenetic variation and habitat when analysed jointly across the five populations. These analyses suggest that epigenetic mechanisms are involved in the response to salt marsh habitats, but also that the relationships among genetic and epigenetic variation and habitat vary by species. Site-specific conditions may also cloud our ability to detect response in replicate populations with similar environmental gradients. Future studies analysing sequence data and the correlation between genetic variation and DNA methylation will be powerful to identify the contributions of genetic and epigenetic response to environmental gradients.
Author Address [Foust, C. M.; Alvarez, M.; Robertson, M. H.; Richards, C. L.] Univ S Florida, Dept Integrat Biol, 4202 E Fowler Ave,SCA 110, Tampa, FL 33620 USA; [Preite, V.; Verhoeven, K. J. F.] Netherlands Inst Ecol NIOO KNAW, Dept Terr Ecol, Droevendaalsesteeg 10, NL-6708 PB Wageningen, Netherlands; [Schrey, A. W.] Armstrong State Univ, Dept Biol, Ctr Sci, 11935 Abercorn St, Savannah, GA 31419 USA
Reprint Address Richards, CL (reprint author), Univ S Florida, Dept Integrat Biol, 4202 E Fowler Ave,SCA 110, Tampa, FL 33620 USA.
E-mail Address clr@usf.edu
ResearcherID Number Verhoeven, Koen/C-9920-2010
ORCID Number Verhoeven, Koen/0000-0003-3002-4102
Funding Agency and Grant Number National Science Foundation through the Global Invasions Network Research Exchange [0541673]; Georgia Coastal Ecosystems Long-Term Ecological Research Program [OCE-0620959, DEB-1419960]
Funding Text We thank Steve Pennings, Jacob Shalack, Caroline Reddy, Justin Manley and Ashley Shayter for access to field sites and assistance with plant sampling on Sapelo Island, GA, and Carlos Herrera and Dave Civitello for advice on analyses. This work was partially supported by funding from the National Science Foundation through the Global Invasions Network Research Exchange (Grant No. 0541673), the Georgia Coastal Ecosystems Long-Term Ecological Research Program (Grant No. OCE-0620959) and DEB-1419960 (to CLR). This is contribution number 1044 from the University of Georgia Marine Institute.
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Cited Reference Count 77
Times Cited 3
Total Times Cited Count (WoS, BCI, and CSCD) 3
Publisher WILEY-BLACKWELL
Publisher City HOBOKEN
Publisher Address 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
ISSN 0962-1083
29-Character Source Abbreviation MOL ECOL
ISO Source Abbreviation Mol. Ecol.
Publication Date APR
Year Published 2016
Volume 25
Issue 8
Beginning Page 1639
Ending Page 1652
Digital Object Identifier (DOI) 10.1111/mec.13522
Page Count 14
Web of Science Category Biochemistry & Molecular Biology; Ecology; Evolutionary Biology
Subject Category Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology
Document Delivery Number DK2WY
Unique Article Identifier WOS:000374776300002
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