Document Detail

Can clone size serve as a proxy for clone age? An exploration using microsatellite divergence in Populus tremuloides.
MedLine Citation:
PMID:  19140980     Owner:  NLM     Status:  MEDLINE    
In long-lived clonal plants, the overall size of a clone is often used to estimate clone age. The size of a clone, however, might be largely determined by physical or biotic interactions, obscuring the relationship between clone size and age. Here, we use the accumulation of mutations at 14 microsatellite loci to estimate clone age in trembling aspen (Populus tremuloides) from southwestern Canada. We show that the observed patterns of genetic divergence are consistent with a model of increasing ramet population size, allowing us to use pairwise genetic divergence as an estimator of clone age. In the populations studied, clone size did not exhibit a significant relationship with microsatellite divergence, indicating that clone size is not a good proxy for clone age. In P. tremuloides, the per-locus per-year neutral somatic mutation rate across 14 microsatellite loci was estimated to lie between 6 x 10(-7) (lower bound) and 4 x 10(-5) (upper bound).
D Ally; K Ritland; S P Otto
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Molecular ecology     Volume:  17     ISSN:  1365-294X     ISO Abbreviation:  Mol. Ecol.     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2009-01-14     Completed Date:  2009-01-27     Revised Date:  2010-10-01    
Medline Journal Info:
Nlm Unique ID:  9214478     Medline TA:  Mol Ecol     Country:  England    
Other Details:
Languages:  eng     Pagination:  4897-911     Citation Subset:  IM    
Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada.
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MeSH Terms
DNA, Plant / genetics
Genetic Variation*
Genetics, Population*
Linear Models
Microsatellite Repeats*
Models, Genetic
Populus / genetics*
Reg. No./Substance:
0/DNA, Plant
Erratum In:
Mol Ecol. 2010 Sep;19(18):4096-7

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

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