Título:
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Gap gene regulatory dynamics evolve along a genotype network
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Autor/a:
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Crombach, Anton; Wotton, Karl R.; Jiménez Guri, Eva; Jaeger, Johannes, 1973-
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Abstract:
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Developmental gene networks implement the dynamic regulatory mechanisms that pattern and shape the organism. Over evolutionary time, the wiring of these networks changes, yet the patterning outcome is often preserved, a phenomenon known as "system drift." System drift is illustrated by the gap gene network-involved in segmental patterning-in dipteran insects. In the classic model organism Drosophila melanogaster and the nonmodel scuttle fly Megaselia abdita, early activation and placement of gap gene expression domains show significant quantitative differences, yet the final patterning output of the system is essentially identical in both species. In this detailed modeling analysis of system drift, we use gene circuits which are fit to quantitative gap gene expression data in M. abdita and compare them with an equivalent set of models from D. melanogaster. The results of this comparative analysis show precisely how compensatory regulatory mechanisms achieve equivalent final patterns in both species. We discuss the larger implications of the work in terms of "genotype networks" and the ways in which the structure of regulatory networks can influence patterns of evolutionary change (evolvability). |
Abstract:
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This work was supported by the MEC-EMBL agreement for the EMBL/CRG Research Unit in Systems Biology, European Commission grant FP7-KBBE-2011-5/289434 (BioPreDyn), Grant 153 (MOPDEV) of the ERANet: ComplexityNET program, AGAUR SGR Grant 406, as well as grants BFU2009-10184 and BFU2012-33775 from MINECO. The Centre for Genomic Regulation (CRG) acknowledges support from MINECO, “Centro de Excelencia Severo Ochoa 2013-2017,” SEV-2012-0208. |
Materia(s):
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-Biologia del desenvolupament -Evolutionary developmental biology -Evolutionary systems biology -Gap gene network -Network evolution -Reverse engineering -System drift |
Derechos:
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© The Author 2016. Published by Oxford University Press on be half of the Society for Molecular Biology and Evolution./nThis is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
http://creativecommons.org/licenses/by-nc/4.0/ |
Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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Oxford University Press
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