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Yeast. 2000 Apr;17(1):1-5.

Insights into the structural and functional evolution of plant genomes afforded by the nucleotide sequences of chromosomes 2 and 4 of Arabidopsis thaliana.

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1
John Innes Centre, Norwich Research Park, UK. ian.bancroft@bbsrc.ac.uk

Abstract

The rapidly accumulating genome sequence data from the plant Arabidopsis thaliana allows more detailed analysis of genome content and organisation than ever before possible in plants. The genome shows a surprisingly high level of genetic redundancy, with as many as 75% of gene products showing significant homology to another protein of A. thaliana. Many duplicated genes occur in arrays of conserved order and indicate that A. thaliana is likely to have had a tetraploid ancestor. Analysis of the divergence of duplicated genome segments leads to the prediction of two major modes of plant genome evolution: macro-scale duplication and rearrangement of chromosomes and micro-scale translocations, duplication and loss of individual genes or small groups of genes.

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