Genetic Changes in Grass Genomes
Author Information
Author(s): Wusirika Ramakrishna, Jianxin Ma, Phillip SanMiguel, John Emberton, Jorge Dubcovsky, Bryan A Shiloff, Zeyu Jiang, Nils Rostoks, Carlos S Busso, Matthew Ogden, Eric Linton, Andris Kleinhofs, Katrien M Devos, Joachim Messing, Jeffrey L Bennetzen
Primary Institution: Purdue University
Hypothesis
Comparative sequence analysis can reveal frequent genic rearrangements in grass genomes.
Conclusion
The study found extensive rearrangements in grass genomes, particularly in the Rp1 and Wx1 regions, indicating significant genomic diversity.
Supporting Evidence
- Grass genomes show extensive colinearity based on comparative genetic maps.
- Small rearrangements involving one or a few genes would be missed by comparative maps.
- Sequence analysis revealed two Rp1 homologues and several truncated genes in maize.
- Duplicated regions in maize suggest recent genomic changes.
- Comparative analysis of wx1 regions in six grasses showed several rearrangements.
Takeaway
Scientists looked at the DNA of different grasses and found that their genes are mixed up in interesting ways, which helps us understand how plants change over time.
Methodology
Sequence comparisons were made between BACs containing genomic segments from several grass species.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website