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Title: Architecture and evolution of a minute plant genome
Authors: Ibarra-Laclette, Enrique
Lyons, Eric
Hernández-Guzmán, Gustavo
Pérez-Torres, Claudia Anahí
Carretero-Paulet, Lorenzo
Chang, Tien-Hao
Lan, Tianying
Juárez, María Jazmín Abraham
Simpson, June
Fernández-Cortés, Araceli
Arteaga-Vázquez, Mario
Góngora-Castillo, Elsa
Acevedo-Hernández, Gustavo
Himmelbauer, Heinz
Xu, Sen
Lynch, Michael
Oropeza-Aburto, Araceli
Cervantes-Pérez, Sergio Alan
Cervantes-Luevano, Jacob Israel
Mockler, Todd
Bryant, Douglas
Herrera-Estrella, Alfredo
Herrera-Estrella, Luis
Ortega-Estrada, María de Jesús
Michael, Todd P.
Welch, Andreanna J.
Schuster, Stephan C.
Minoche, André E.
Albert, Victor A.
Issue Date: 2013
Source: Ibarra-Laclette, E., Lyons, E., Hernández-Guzmán, G., Pérez-Torres, C. A., Carretero-Paulet, L., Chang, T.-H., et al. (2013). Architecture and evolution of a minute plant genome. Nature, 498, 94-98.
Series/Report no.: Nature
Abstract: It has been argued that the evolution of plant genome size is principally unidirectional and increasing owing to the varied action of whole-genome duplications (WGDs) and mobile element proliferation1. However, extreme genome size reductions have been reported in the angiosperm family tree. Here we report the sequence of the 82-megabase genome of the carnivorous bladderwort plant Utricularia gibba. Despite its tiny size, the U. gibba genome accommodates a typical number of genes for a plant, with the main difference from other plant genomes arising from a drastic reduction in non-genic DNA. Unexpectedly, we identified at least three rounds of WGD in U. gibba since common ancestry with tomato (Solanum) and grape (Vitis). The compressed architecture of the U. gibba genome indicates that a small fraction of intergenic DNA, with few or no active retrotransposons, is sufficient to regulate and integrate all the processes required for the development and reproduction of a complex organism.
DOI: 10.1038/nature12132
Fulltext Permission: none
Fulltext Availability: No Fulltext
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