Document Detail


Local adaptation across a climatic gradient despite small effective population size in the rare sapphire rockcress.
MedLine Citation:
PMID:  11506685     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
When assigning conservation priorities in endangered species, two common management strategies seek to protect remnant populations that (i) are the most genetically divergent or (ii) possess the highest diversity at neutral genetic markers. These two approaches assume that variation in molecular markers reflects variation in ecologically important traits and ignore the possibility of local adaptation among populations that show little divergence or variation at marker loci. Using common garden experiments, we demonstrate that populations of the rare endemic plant Arabis fecunda are physiologically adapted to the local microclimate. Local adaptation occurs despite (i) the absence of divergence at almost all marker loci and (ii) very small effective population sizes, as evidenced by extremely low levels of allozyme and DNA sequence polymorphism. Our results provide empirical evidence that setting conservation priorities based exclusively on molecular marker diversity may lead to the loss of locally adapted populations.
Authors:
J K McKay; J G Bishop; J Z Lin; J H Richards; A Sala; T Mitchell-Olds
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  268     ISSN:  0962-8452     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-08-16     Completed Date:  2001-12-05     Revised Date:  2008-11-20    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1715-21     Citation Subset:  IM    
Affiliation:
Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA. jmckay@selway.umt.edu
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological*
Brassicaceae / enzymology,  genetics,  physiology*
Climate*
Environment*
Enzymes / genetics
Genetic Markers
Plant Leaves / physiology
Population Density
Quantitative Trait, Heritable
Chemical
Reg. No./Substance:
0/Enzymes; 0/Genetic Markers

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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