Developmental plasticity, morphological variation and evolvability: a multilevel analysis of morphometric integration in the shape of compound leaves

Developmental plasticity, morphological variation and evolvability: a multilevel analysis of morphometric integration in the shape of compound leaves

The structure of compound leaves provides flexibility for morphological change by variation in the shapes, sizes and arrangement of leaflets. Here, we conduct a multilevel analysis of shape variation in compound leaves to explore the developmental plasticity and evolutionary potential that are the b...

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Bibliographic Details
Published in:Journal of evolutionary biology Vol. 25; no. 1; pp. 115 - 129
Main Authors: KLINGENBERG, C. P., DUTTKE, S., WHELAN, S., KIM, M.
Format: Journal Article
Language:English
Published: Oxford, UK Blackwell Publishing Ltd 01-01-2012
Subjects:
Adaptation, Biological
allometry
Biodiversity
Biological Evolution
compound leaf
Evolutionary biology
fluctuating asymmetry
geometric morphometrics
leaf shape
Likelihood Functions
Multivariate Analysis
Phenotype
phylogenetic uncertainty
Phylogeny
Plant Leaves - anatomy & histology
plasticity
Potentilla - anatomy & histology
Potentilla - classification
Potentilla - genetics
Principal Component Analysis
Procrustes fit
Regression Analysis
Rosaceae
Taxonomy
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Summary:The structure of compound leaves provides flexibility for morphological change by variation in the shapes, sizes and arrangement of leaflets. Here, we conduct a multilevel analysis of shape variation in compound leaves to explore the developmental plasticity and evolutionary potential that are the basis of diversification in leaf shape. We use the methods of geometric morphometrics to study the shapes of individual leaflets and whole leaves in 20 taxa of Potentilla (sensu lato). A newly developed test based on the bootstrap approach suggests that uncertainty in the molecular phylogeny precludes firm conclusions whether there is a phylogenetic signal in the data on leaf shape. For variation among taxa, variation within taxa, as well as fluctuating asymmetry, there is evidence of strong morphological integration. The patterns of variation are similar across all three levels, suggesting that integration within taxa may act as a constraint on evolutionary change.
Bibliography:Present address: Section of Molecular Biology, University of California at San Diego, La Jolla, CA, USA.
The first two authors contributed equally to this study.
ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1010-061X
1420-9101
DOI:10.1111/j.1420-9101.2011.02410.x