2024-03-29T12:54:45Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/599252012-11-11T23:00:00Zcom_10261_57com_10261_8col_10261_310
2012-11-12T09:28:27Z
urn:hdl:10261/59925
Historical and biological determinants of genetic diversity in the highly endemic triploid sea lavender Limonium dufourii (Plumbaginaceae)
Palop-Esteban, M.
Segarra-Moragues, José G.
González-Candelas, Fernando
Ministerio de Educación y Cultura (España)
Consejo Superior de Investigaciones Científicas (España)
Alloploidy
Apomixis
Genetic diversity
Halophytes
Microsatellites
Plant conservation
14 páginas, 5 figuras, 2 tablas.
Microsatellite markers were used to evaluate the genetic diversity and population genetic structure in the critically endangered Limonium dufourii(Plumbaginaceae), a highly endemic triploid species from the coasts of eastern Spain. Sixty-five alleles from
13 microsatellite regions were amplified in a sample of 122 individuals collected from the six extant populations. Microsatellite patterns were consistent with the triploid nature of L. dufourii. Alleles were unambiguously assigned to two different parental subgenomes in this hybrid species and the greater contribution of the diploid parental subgenome was confirmed. Eleven, 25 and 26 multilocus genotypes were recorded from the haploid, diploid and from the combined information of both subgenomes, respectively. Genetic diversity was mostly distributed among populations (72.06% of the total genetic variation). Genotypes from Marjal del Moro populations grouped into two highly structured clusters (88.41% of the total variance). The observed patterns of distribution of genetic diversity are interpreted to result from multiple hybridization events and isolation between populations. Threats to this species are mainly anthropogenic (urbanization and tourism pressure), although stochastic risks cannot be ignored. Therefore, in order to preserve extant genetic variation of L. dufourii, in situ strategies such as the preservation of its habitat are a high priority.
Several recommendations in order to assist
ex situ measures to guarantee the success of
conservation strategies and maintain the relationships between individuals and populations are proposed.
2012-11-12T09:28:27Z
2012-11-12T09:28:27Z
2007-09
artículo
Molecular Ecology 16(18): 3814-3827 (2007)
0962-1083
http://hdl.handle.net/10261/59925
10.1111/j.1365-294X.2007.03449.x
1365-294X
http://dx.doi.org/10.13039/501100003339
eng
http://dx.doi.org/10.1111/j.1365-294X.2007.03449.x
closedAccess
Wiley-Blackwell