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Leaves as composites of latent developmental and evolutionary shapes

View ORCID ProfileDaniel H. Chitwood, View ORCID ProfileLaura L. Klein, View ORCID ProfileAllison J. Miller, View ORCID ProfileJason P. Londo
doi: https://doi.org/10.1101/018291
Daniel H. Chitwood
1Donald Danforth Plant Science Center, St. Louis, MO 63132 USA
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  • For correspondence: dchitwood@danforthcenter.org
Laura L. Klein
2Department of Biology, Saint Louis University, St. Louis, MO 63103 USA
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Allison J. Miller
2Department of Biology, Saint Louis University, St. Louis, MO 63103 USA
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Jason P. Londo
3United States Department of Agriculture, Agriculture Research Service, Grape Genetics Research Unit, Geneva, NY 14456 USA
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Abstract

Across plants, leaves exhibit profound diversity in shape. As a single leaf expands, its shape is in constant flux. Additionally, plants may also produce leaves with different shapes at successive nodes. Because leaf shape can vary in many different ways, theoretically the effects of distinct processes are separable, even within the shape of a single leaf. Here, we measure the shapes of >3,200 leaves representing >270 vines from wild relatives of domesticated grape. We isolate latent shapes embedded within the overall shape of leaves that can predict developmental stages independent from species identity and vice versa. Shapes predictive of development are then used to stage leaves from 1,200 varieties of domesticated grape, revealing that changes in timing underlie leaf shape diversity. Our results indicate distinct latent shapes combine to produce a composite morphology in leaves, and that developmental and evolutionary contributions to shape vary independently from each other.

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Posted April 21, 2015.
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Leaves as composites of latent developmental and evolutionary shapes
Daniel H. Chitwood, Laura L. Klein, Allison J. Miller, Jason P. Londo
bioRxiv 018291; doi: https://doi.org/10.1101/018291
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Leaves as composites of latent developmental and evolutionary shapes
Daniel H. Chitwood, Laura L. Klein, Allison J. Miller, Jason P. Londo
bioRxiv 018291; doi: https://doi.org/10.1101/018291

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