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. 2017 Apr;36:158-167.
doi: 10.1016/j.pbi.2017.03.003. Epub 2017 Apr 13.

​Plant Centromeres​


​Plant Centromeres​

Luca Comai et al. Curr Opin Plant Biol. .


Plant centromeres, which are determined epigenetically by centromeric histone 3 (CENH3) have revealed surprising structural diversity, ranging from the canonical monocentric seen in vertebrates, to polycentric, and holocentric. Normally stable, centromeres can change position over evolutionary times or upon genomic stress, such as when chromosomes are broken. At the DNA level, centromeres can be based on single copy DNA or more commonly on repeats. Rapid evolution of centromeric sequences and of CENH3 protein remains a mystery, as evidence of co-adaptation is lacking. Epigenetic differences between parents can trigger uniparental centromere failure and genome elimination, contributing to postzygotic hybridization barriers.​.

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