Origin, Diversity, and Evolution of Telomere Sequences in Plants

Frontiers in Plant Science
Vratislav Peska, Sònia Garcia

Abstract

Telomeres are basic structures of eukaryote genomes. They distinguish natural chromosome ends from double-stranded breaks in DNA and protect chromosome ends from degradation or end-to-end fusion with other chromosomes. Telomere sequences are usually tandemly arranged minisatellites, typically following the formula (TxAyGz)n. Although they are well conserved across large groups of organisms, recent findings in plants imply that their diversity has been underestimated. Changes in telomeres are of enormous evolutionary importance as they can affect whole-genome stability. Even a small change in the telomere motif of each repeat unit represents an important interference in the system of sequence-specific telomere binding proteins. Here, we provide an overview of telomere sequences, considering the latest phylogenomic evolutionary framework of plants in the broad sense (Archaeplastida), in which new telomeric sequences have recently been found in diverse and economically important families such as Solanaceae and Amaryllidaceae. In the family Lentibulariaceae and in many groups of green algae, deviations from the typical plant telomeric sequence have also been detected recently. Ancestry and possible homoplasy in telomeric motifs, as...Continue Reading

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Citations

Sep 20, 2020·G3 : Genes - Genomes - Genetics·Alison D ScottDavid B Neale
Feb 5, 2021·Genome Biology and Evolution·Filip ČervenákĽubomír Tomáška
Oct 15, 2020·Biomolecules·Petra Procházková Schrumpfová, Jiří Fajkus
Dec 24, 2020·Genome Biology and Evolution·Filip ČervenákĽubomír Tomáška
Mar 7, 2021·International Journal of Molecular Sciences·Petr FajkusEva Sýkorová
Feb 18, 2021·FEMS Yeast Research·Dmitry Mamaev, Renata Zvyagilskaya
Apr 7, 2021·Nature Plants·Péter SzövényiFay-Wei Li
Apr 2, 2021·The Plant Cell·Rory J CraigPeter D Keightley
Jun 27, 2021·Scientific Reports·Daniela PrušákováRadmila Čapková Frydrychová
Jun 29, 2021·Nucleic Acids Research·Petr FajkusJiří Fajkus
Aug 27, 2021·Frontiers in Genetics·Mostafa RahnamaMark L Farman

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Methods Mentioned

BETA
Fluorescence

Software Mentioned

Tandem Repeats Finder
BAL31
RepeatExplorer
NGS

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