GENETIC EVIDENCE FOR GLACIAL REFUGIA OF THE TEMPERATE TREE <i>EUCRYPHIA CORDIFOLIA</i> (CUNONIACEAE) IN SOUTHERN SOUTH AMERICA

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dc.contributor.authorSegovia, Ricardo A.
dc.contributor.authorPerez, Maria F.
dc.contributor.authorHinojosa, Luis F.
dc.date.accessioned2025-01-20T23:59:11Z
dc.date.available2025-01-20T23:59:11Z
dc.date.issued2012
dc.description.abstractPremise of the study: The temperate forests of southern South America were greatly affected by glaciations. Previous studies have indicated that some cold-tolerant tree species were able to survive glacial periods in small, ice-free patches within glaciated areas in the Andes and in southern Patagonia. Here we asked whether populations of the mesothermic species Eucryphia cordifolia also were able to survive glaciations in these areas or only in unglaciated coastal areas.
dc.description.abstractMethods: The chloroplast intergenic spacer trnV-ndhC was sequenced for 150 individuals from 22 locations. Genetic data were analyzed (standard indexes of genetic diversity, a haplotype network, and genetic differentiation) in a geographical context.
dc.description.abstractKey results: Two of the nine haplotypes detected were widespread in high frequency across the entire range of the species. The highest levels of genetic diversity were found around 40 S, decreasing sharply northward and more moderately southward. No differences in genetic diversity were found between Andean and coastal populations. Notably, seven haplotypes were found in a small area of the Coast Range known as the Cordillera Pelada (40 degrees S). The differentiation coefficients G(ST) and N-ST revealed that most of the genetic variation detected was due to variation within populations.
dc.description.abstractConclusions: The low levels of population differentiation and the high genetic diversity found in the Cordillera Pelada suggest that this area was the main refugium for E. cordifolia during glaciations. Nevertheless, given the high levels of genetic diversity found in some Andean populations, we cannot discount that some local populations also survived the glaciation in the Andes.
dc.fuente.origenWOS
dc.identifier.doi10.3732/ajb.1100013
dc.identifier.eissn1537-2197
dc.identifier.issn0002-9122
dc.identifier.urihttps://doi.org/10.3732/ajb.1100013
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95284
dc.identifier.wosidWOS:000299167700023
dc.issue.numero1
dc.language.isoen
dc.pagina.final129
dc.pagina.inicio121
dc.revistaAmerican journal of botany
dc.rightsacceso restringido
dc.subjectclimate change
dc.subjectcpDNA
dc.subjectEucryphia cordifolia Cav.
dc.subjectphylogeography
dc.subjectPleistocene glaciations
dc.subjectrefugia
dc.subjectSouth America
dc.subjecttemperate rain forest
dc.titleGENETIC EVIDENCE FOR GLACIAL REFUGIA OF THE TEMPERATE TREE <i>EUCRYPHIA CORDIFOLIA</i> (CUNONIACEAE) IN SOUTHERN SOUTH AMERICA
dc.typeartículo
dc.volumen99
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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