1.Evolutionary Transients in the Rice Transcriptome
Wang JUN ; Zhang JIANGUO ; Li RUIQIANG ; Zheng HONGKUN ; Li JUN ; Zhang YONG ; Li HENG ; Ni PEIXIANG ; Li SONGGANG ; Li SHENGTING ; Wang JINGQIANG ; Liu DONGYUAN ; McDermott JASON ; Samudrala RAM ; Liu SIQI ; Wang JIAN ; Yang HUANMING ; Yu JUN ; Wong Ka-Shu GANE
Genomics, Proteomics & Bioinformatics 2010;08(4):211-228
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 "evolutionarytransients",referring here to both the process 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.
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