Here, processes and mechanisms of gene and genome evolution in polyploids are reviewed. Genes duplicated by polyploidy may retain their original or similar function, undergo diversification in protein function or regulation, or one copy may become silenced through mutational or epigenetic means. ...
This book brings together for the first time the conceptual and theoretical underpinnings of polyploid genome evolution with syntheses of the patterns and processes of genome evolution in diverse polyploid groups. Because polyploidy is most common and best studied in plants, the book emphasizes plant ...
of the model plantNicotiana benthamianareveals the genetic and epigenetic landscape of its centromeres, which have evolved via satellite expansion, retrotransposon enrichment, and mitochondrial DNA integration. These insights enhance knowledge of polyploid centromere diversity and evolution in Solanaceae species...
long enough to reveal long-term evolutionary patterns, but short enough to give a high-resolution picture of the process. In addition, they provide an excellent setting for contextualizing genome evolution with a dramatic post-WGD species radiation and intricate adaptations to a whole range of life...
Various types of single-gene duplication occur more or less continuously and have been implicated in key environmental adaptations [32,33], but yield genes with short half-lives [27]. De novo gene evolution, for example as a result of transposable element activities [34], may often form fragm...
We found in wheat that allopolyploidy accelerated genome evolution in two ways: (1) it triggered rapid genome alterations through the instantaneous generation of a variety of cardinal genetic and epigenetic changes (which we termed "revolutionary" changes), and (2) it facilitated sporadic genomic ...
Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome 来自 Semantic Scholar 喜欢 0 阅读量: 1984 摘要: Oilseed rape (Brassica napus L.) was formed ~7500 years ago by hybridization between B. rapa and B. oleracea, followed by chromosome doubling, a process known as ...
Sub-/neo-functionalization of duplicated genes provided the genetic basis underlying the unique flowering-time regulation in P. × acerifolia. The P. × acerifolia reference genome will greatly expand understanding of the evolution of genome organization, genetic diversity, and flowering-time regulation ...
Polyploidization has provided much genetic variation for plant adaptive evolution, but the mechanisms by which the molecular evolution of polyploid genomes establishes genetic architecture underlying species differentiation are unclear. Brassica is an id
Whole-genome duplication (WGD) is widespread across eukaryotes and can promote adaptive evolution1,2,3,4. However, given the instability of newly formed polyploid genomes5,6,7, understanding how WGDs arise in a population, persist, and underpin adaptations remains a challenge. Here, using our on...