On the Tempo of Genome Size Evolution in Angiosperms
Joint Authors
Smith, Stephen A.
Beaulieu, Jeremy M.
Leitch, Ilia Judith
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-06-29
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Broadly sampled phylogenies have uncovered extreme deviations from a molecular clock with the rates of molecular substitution varying dramatically within/among lineages.
While growth form, a proxy for life history, is strongly correlated with molecular rate heterogeneity, its influence on trait evolution has yet to be examined.
Here, we explore genome size evolution in relation to growth form by combining recent advances in large-scale phylogeny construction with model-based phylogenetic comparative methods.
We construct phylogenies for Monocotyledonae (monocots) and Fabaceae (legumes), including all species with genome size information, and assess whether rates of genome size evolution depend on growth form.
We found that the rates of genome size evolution for woody lineages were consistently an order of magnitude slower than those of herbaceous lineages.
Our findings also suggest that growth form constrains genome size evolution, not through consequences associated with the phenotype, but instead through the influence of life history attributes on the tempo of evolution.
Consequences associated with life history now extend to genomic evolution and may shed light on the frequently observed threshold effect of genome size variation on higher phenotypic traits.
American Psychological Association (APA)
Beaulieu, Jeremy M.& Smith, Stephen A.& Leitch, Ilia Judith. 2010. On the Tempo of Genome Size Evolution in Angiosperms. Journal of Botany،Vol. 2010, no. 2010, pp.1-8.
https://search.emarefa.net/detail/BIM-513970
Modern Language Association (MLA)
Beaulieu, Jeremy M.…[et al.]. On the Tempo of Genome Size Evolution in Angiosperms. Journal of Botany No. 2010 (2010), pp.1-8.
https://search.emarefa.net/detail/BIM-513970
American Medical Association (AMA)
Beaulieu, Jeremy M.& Smith, Stephen A.& Leitch, Ilia Judith. On the Tempo of Genome Size Evolution in Angiosperms. Journal of Botany. 2010. Vol. 2010, no. 2010, pp.1-8.
https://search.emarefa.net/detail/BIM-513970
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513970