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  • 1
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    Evolution and development of inflorescence architectures (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-05-26
    Description: To understand the constraints on biological diversity, we analyzed how selection and development interact to control the evolution of inflorescences, the branching structures that bear flowers. We show that a single developmental model accounts for the restricted range of inflorescence types observed in nature and that this model is supported by molecular genetic studies. The model predicts associations between inflorescence architecture, climate, and life history, which we validated empirically. Paths, or evolutionary wormholes, link different architectures in a multidimensional fitness space, but the rate of evolution along these paths is constrained by genetic and environmental factors, which explains why some evolutionary transitions are rare between closely related plant taxa.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Prusinkiewicz, Przemyslaw -- Erasmus, Yvette -- Lane, Brendan -- Harder, Lawrence D -- Coen, Enrico -- New York, N.Y. -- Science. 2007 Jun 8;316(5830):1452-6. Epub 2007 May 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computer Science, University of Calgary, 2500 University Drive N.W. Calgary, Alberta T2N 1N4, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17525303" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/*anatomy & histology/genetics/*growth & development ; Arabidopsis Proteins/genetics/physiology ; *Biological Evolution ; Climate ; Computer Simulation ; Flowers/*anatomy & histology/genetics/*growth & development ; Gene Expression ; Genes, Plant ; Mathematics ; Meristem/growth & development ; *Models, Biological ; Selection, Genetic ; Transcription Factors/genetics/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Evolutionary paths underlying flower color variation in Antirrhinum (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-08-19
    Description: To understand evolutionary paths connecting diverse biological forms, we defined a three-dimensional genotypic space separating two flower color morphs of Antirrhinum. A hybrid zone between morphs showed a steep cline specifically at genes controlling flower color differences, indicating that these loci are under selection. Antirrhinum species with diverse floral phenotypes formed a U-shaped cloud within the genotypic space. We propose that this cloud defines an evolutionary path that allows flower color to evolve while circumventing less-adaptive regions. Hybridization between morphs located in different arms of the U-shaped path yields low-fitness genotypes, accounting for the observed steep clines at hybrid zones.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Whibley, Annabel C -- Langlade, Nicolas B -- Andalo, Christophe -- Hanna, Andrew I -- Bangham, Andrew -- Thebaud, Christophe -- Coen, Enrico -- New York, N.Y. -- Science. 2006 Aug 18;313(5789):963-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, John Innes Centre, Colney Lane, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16917061" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; Alleles ; Antirrhinum/classification/*genetics ; Base Sequence ; *Biological Evolution ; Crosses, Genetic ; Flowers/*genetics ; Gene Flow ; Gene Frequency ; Genes, Plant ; *Genetic Speciation ; Genotype ; Haplotypes ; Hybridization, Genetic ; Models, Genetic ; Molecular Sequence Data ; Phenotype ; Phylogeny ; Pigmentation/*genetics ; Pigments, Biological/genetics ; Principal Component Analysis ; Selection, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Generation of leaf shape through early patterns of growth and tissue polarity (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-03-03
    Description: A major challenge in biology is to understand how buds comprising a few cells can give rise to complex plant and animal appendages like leaves or limbs. We address this problem through a combination of time-lapse imaging, clonal analysis, and computational modeling. We arrive at a model that shows how leaf shape can arise through feedback between early patterns of oriented growth and tissue deformation. Experimental tests through partial leaf ablation support this model and allow reevaluation of previous experimental studies. Our model allows a range of observed leaf shapes to be generated and predicts observed clone patterns in different species. Thus, our experimentally validated model may underlie the development and evolution of diverse organ shapes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuchen, Erika E -- Fox, Samantha -- de Reuille, Pierre Barbier -- Kennaway, Richard -- Bensmihen, Sandra -- Avondo, Jerome -- Calder, Grant M -- Southam, Paul -- Robinson, Sarah -- Bangham, Andrew -- Coen, Enrico -- Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2012 Mar 2;335(6072):1092-6. doi: 10.1126/science.1214678.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉John Innes Centre, Norwich Research Park, Norwich, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22383846" target="_blank"〉PubMed〈/a〉
    Keywords: Antirrhinum/anatomy & histology/genetics/growth & development ; Arabidopsis/anatomy & histology/genetics/growth & development ; Arabidopsis Proteins/genetics/metabolism ; Cell Polarity ; Computer Simulation ; Genes, Plant ; *Models, Biological ; *Morphogenesis ; Plant Leaves/*anatomy & histology/cytology/*growth & development ; Time-Lapse Imaging
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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