Genes encoding pentatricopeptide repeat (PPR) proteins are not conserved in location in plant genomes and may be subject to diversifying selection
2007
PPR Genes in Plants: Location and Evolution
publication
Evidence: moderate
Author Information
Author(s): Geddy Rachel, Brown Gregory G
Primary Institution: Plant Products Directorate, Plant Biosafety Office, Canadian Food Inspection Agency
Hypothesis
The study investigates the variability in the location of PPR genes in plant genomes and their evolutionary implications.
Conclusion
PPR genes exhibit a 'nomadic' character, suggesting they undergo a 'birth and death' process involving transposition and loss of gene copies.
Supporting Evidence
- PPR genes are highly variable in their genomic locations across different plant species.
- The study suggests that PPR genes may be subject to diversifying selection, similar to disease resistance genes.
- PPR genes in plants are often found in clusters, indicating a potential evolutionary advantage.
Takeaway
PPR genes in plants can move around in the genome, which might help them adapt to new challenges, like diseases.
Methodology
The study involved sequencing genomic regions in Brassica and Arabidopsis to analyze PPR gene locations and their evolutionary patterns.
Digital Object Identifier (DOI)
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