Insights into the Structural and Functional Evolution of Plant Genomes Afforded by the Nucleotide Sequences of Chromosomes 2 and 4 of Arabidopsis thaliana

✍ Scribed by Bancroft, Ian

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 339 KB
• Volume: 1
• Category: Article
• ISSN: 0749-503X
• DOI: 10.1002/(sici)1097-0061(200004)17:1<1::aid-yea3>3.0.co;2-v

✦ Synopsis

The rapidly accumulating genome sequence data from the plant Arabidopsis thaliana allows more detailed analysis of genome content and organisation than ever bafore possible in plants. The genome shows a surprisingly high level of genetic redundancy, with as many as 75% of gene products showing signficant homology to another protien 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 translocation, duplication and loss of individual genes or small groups of genes.