Abstract:
: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).
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Ally D,Ritland K,Otto SPdoi
10.1111/j.1365-294X.2008.03962.xsubject
Has Abstractpub_date
2008-11-01 00:00:00pages
4897-911issue
22eissn
0962-1083issn
1365-294Xpii
MEC3962journal_volume
17pub_type
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