Evolutionary Transients in the Rice Transcriptome

Jun Wang, Jianguo Zhang, Ruiqiang Li, Hongkun Zheng, Jun Li, Yong Zhang, Heng Li, Peixiang Ni, Songgang Li, Shengting Li, Jingqiang Wang, Dongyuan Liu (+7 others)
2010 Genomics, Proteomics & Bioinformatics  
In the canonical version of evolution by gene duplication, one copy is kept unaltered while the other is free to evolve. This process of evolutionary experimentation can persist for millions of years. Since it is so short lived in comparison to the lifetime of the core genes that make up the majority of most genomes, a substantial fraction of the genome and the transcriptome may-in principle-be attributable to what we will refer to as "evolutionary transients", referring here to both the
more » ... and the genes that have gone or are undergoing this process. Using the rice gene set as a test case, we argue that this phenomenon goes a long way towards explaining why there are so many more rice genes than Arabidopsis genes, and why most excess rice genes show low similarity to eudicots.
doi:10.1016/s1672-0229(10)60023-x pmid:21382590 pmcid:PMC5054128 fatcat:gg3x4taq3nf4rarigdsll7davq