Many gene and domain families have convergent fates following independent whole-genome duplication events in Arabidopsis, Oryza, Saccharomyces and Tetraodon.
Genome duplication is potentially a good source of new genes, but such genes take time to evolve. We have found a group of "duplication-resistant" genes, which have undergone convergent restoration to singleton status following several independent genome duplications. Restoration of duplication-resistant genes to singleton status could be important to long-term survival of a polyploid lineage. Angiosperms show more frequent polyploidization and a higher degree of duplicate gene preservation than other paleopolyploids, making them well-suited to further study of duplication-resistant genes.
Paterson
Andrew H
AH
Plant Genome Mapping Laboratory and Department of Genetics, University of Georgia, Athens, GA 30602, USA. paterson@uga.edu
Chapman
Brad A
BA
Kissinger
Jessica C
JC
Bowers
John E
JE
Feltus
Frank A
FA
Estill
James C
JC
D000818:Animals; D017360:Arabidopsis / Q000235:genetics*; D019143:Evolution, Molecular; D020440:Gene Duplication; D017343:Genes, Plant; D016681:Genome, Fungal; D012275:Oryza / Q000235:genetics*; D011123:Polyploidy; D017434:Protein Structure, Tertiary; D012440:Saccharomyces / Q000235:genetics*; D023721:Tetraodontiformes / Q000235:genetics*