The B73 maize genome: complexity, diversity, and dynamics.

0 avis

The B73 maize genome: complexity, diversity, and dynamics.

Archive ouverte

Edité par CCSD ; American Association for the Advancement of Science (AAAS) -

International audience. We report an improved draft nucleotide sequence of the 2.3-gigabase genome of maize, an important crop plant and model for biological research. Over 32,000 genes were predicted, of which 99.8% were placed on reference chromosomes. Nearly 85% of the genome is composed of hundreds of families of transposable elements, dispersed nonuniformly across the genome. These were responsible for the capture and amplification of numerous gene fragments and affect the composition, sizes, and positions of centromeres. We also report on the correlation of methylation-poor regions with Mu transposon insertions and recombination, and copy number variants with insertions and/or deletions, as well as how uneven gene losses between duplicated regions were involved in returning an ancient allotetraploid to a genetically diploid state. These analyses inform and set the stage for further investigations to improve our understanding of the domestication and agricultural improvements of maize.

Langue: en

Indexation

Consulter en ligne

Consulter le document

Suggestions

Du même auteur

Detailed analysis of a contiguous 22-Mb region of the maize genome.

Archive ouverte | Wei, Fusheng | CCSD

International audience. Most of our understanding of plant genome structure and evolution has come from the careful annotation of small (e.g., 100 kb) sequenced genomic regions or from automated annotation of comple...

Genomes of 13 domesticated and wild rice relatives highlight genetic conservation, turnover and innovation across the genus Oryza

Archive ouverte | Stein, Joshua | CCSD

International audience

Evolution of genes and genomes on the Drosophila phylogeny

Archive ouverte | Drosophila 12 Genomes Consortium, . | CCSD

Affiliations des auteurs : cf page 216 de l'article. International audience. Comparative analysis of multiple genomes in a phylogenetic framework dramatically improves the precision and sensitivity of evolutionary i...

Chargement des enrichissements...