ArticleGenetics2005
Structure and evolution of the r/b chromosomal regions in rice, maize and sorghum.
Article in Genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 51 citations in OpenAlex.
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- Impact of transposable elements on genome structure and evolution in bread wheat.Genome biology · 2018Article
- Divergent Transactivation of Maize Storage Protein Zein Genes by the Transcription Factors Opaque2 and OHPs.Genetics · 2016Article
- Transposable elements contribute to activation of maize genes in response to abiotic stress.PLoS genetics · 2015Article
- Description of durum wheat linkage map and comparative sequence analysis of wheat mapped DArT markers with rice and Brachypodium genomes.BMC genetics · 2013Article
- Pervasive gene content variation and copy number variation in maize and its undomesticated progenitor.Genome research · 2010Article
- Diversity of Pol IV function is defined by mutations at the maize rmr7 locus.PLoS genetics · 2009Article
- A genome-wide characterization of microRNA genes in maize.PLoS genetics · 2009Article
- Change of gene structure and function by non-homologous end-joining, homologous recombination, and transposition of DNA.PLoS genetics · 2009Article
- The 172-kb genomic DNA region of the O. rufipogon yld1.1 locus: comparative sequence analysis with O. sativa ssp. japonica and O. sativa ssp. indica.Functional & integrative genomics · 2009Article
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- Integrated cytogenetic map of mitotic metaphase chromosome 9 of maize: resolution, sensitivity, and banding paint development.Chromosoma · 2008Article
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- Uneven chromosome contraction and expansion in the maize genome.Genome research · 2006Article
- Retrotranspositions in orthologous regions of closely related grass species.BMC evolutionary biology · 2006Article
- The sequence of rice chromosomes 11 and 12, rich in disease resistance genes and recent gene duplications.BMC biology · 2005Article
- Whole-genome validation of high-information-content fingerprinting.Plant physiology · 2005Article
- Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The r1 and b1 genes of maize, each derived from the chromosomes of two progenitors that hybridized >4.8 million years ago (MYA), have been a rich source for studying transposition, recombination, genomic imprinting, and paramutation. To provide a phylogenetic context to the genetic studies, we sequenced orthologous regions from maize and sorghum (>600 kb) surrounding these genes and compared them with the rice genome. This comparison showed that the homologous regions underwent complete or partial gene deletions, selective retention of orthologous genes, and insertion of nonorthologous genes. Phylogenetic analyses of the r/b genes revealed that the ancestral gene was amplified independently in different grass lineages, that rice experienced an intragenomic gene movement and parallel duplication, that the maize r1 and b1 genes are descendants of two divergent progenitors, and that the two paralogous r genes of sorghum are almost as old as the sorghum lineage. Such sequence mobility also extends to linked genes. The cisZOG genes are characterized by gene amplification in an ancestral grass, parallel duplications and deletions in different grass lineages, and movement to a nonorthologous position in maize. In addition to gene mobility, both maize and rice regions experienced recent transposition (<3 MYA).
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