What is it about?
As in vertebrates, a compositional compartimentalization is found in maize, however, it is much simpler. Compartments are 5-6 in vertebrates, while they are 3 in maize. Basically, practically all genes are concentrated in one isochore as this notion is defined in vertebrates (4% GC). This organization is such despite a similar heterogeneity in the 3rd position of codons, which shows that the compositional constraints on plant genomes are very different than those on vertebrate genomes.
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Why is it important?
The general description of genome structures regarding their commom features and peculiarities is important to understand how they may adapt to selective pressures. This report is part of essential biological observations in comparative genomics of higher eukaryotes.
Perspectives
This report sheets some light on comparative genomics and plant genome dynamics. It completes other perspetives brought by genetic mapping, genome sequencing, genome synteny etc.
Nicolas Carels
Oswaldo Cruz Foundation
Read the Original
This page is a summary of: The maize gene space is compositionally compartimentalized, FEBS Letters, June 2005, Wiley,
DOI: 10.1016/j.febslet.2005.05.063.
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