| Conservation genetics of the endangered Iberian steppe plant Ferula loscosii (Apiaceae). | |
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MedLine Citation:
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PMID: 18557909 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Ferula loscosii (Lange) Willk (Apiaceae) is a threatened endemic species native to the Iberian Peninsula. The plant has a narrow and disjunct distribution in three regions, NE, C and SE Spain. Genetic variability within and among 11 populations from its natural distribution was assessed using allozymes. Intermediate levels of genetic diversity were detected in F. loscosii (P(99%) = 36.83; H(E) = 0.125; H(T) = 0.152). However, the highest genetic diversity (58%) corresponded to the threatened populations from SE and C Spain (H(T) = 0.169) rather than the more abundant and larger populations from NE Spain (Ebro valley) (H(T) = 0.122). Low to moderate levels of genetic structure were found among regional ranges (G(ST) = 0.134), and several statistical spatial correlation analyses corroborated substantial genetic differentiation among the three main regional ranges. However, no significant genetic differentiation was found among the NE Spain populations, except for a northernmost population that is geographically isolated. Outcrossing mating and other biological traits of the species could account for the maintenance of the present values of genetic diversity within populations. The existence of an ancestral late Tertiary wider distribution of the species in SE and C Spain, followed by the maintenance of different Quaternary refugia in these warmer areas, together with a more recent and rapid post-glacial expansion towards NE Spain, are arguments that could explain the low genetic variability and structure found in the Ebro valley and the higher levels of diversity in the southern Iberian populations. |
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Authors:
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E Pérez-Collazos; P Catalán |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Plant biology (Stuttgart, Germany) Volume: 10 ISSN: 1435-8603 ISO Abbreviation: Plant Biol (Stuttg) Publication Date: 2008 Jul |
Date Detail:
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Created Date: 2008-06-18 Completed Date: 2008-09-22 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 101148926 Medline TA: Plant Biol (Stuttg) Country: Germany |
Other Details:
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Languages: eng Pagination: 492-501 Citation Subset: IM |
Affiliation:
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Departamento de Agricultura y Economía Agraria, Escuela Politécnica Superior de Huesca, Universidad de Zaragoza, Huesca, Spain. ernextop@unizar.es |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Ferula
/
classification,
genetics*,
growth & development Gene Flow Genetic Variation* Genotype Geography Phylogeny Spain |
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