Impact of Repetitive DNA on Sex Chromosome Evolution in Plants

Overview

Journal Chromosome Res

Date 2015 Oct 18

PMID 26474787

Citations 30

Authors

Roman Hobza

Zdenek Kubat

Radim Cegan

Wojciech Jesionek

Boris Vyskot

Eduard Kejnovsky

Affiliations

Soon will be listed here.

Abstract

Structurally and functionally diverged sex chromosomes have evolved in many animals as well as in some plants. Sex chromosomes represent a specific genomic region(s) with locally suppressed recombination. As a consequence, repetitive sequences involving transposable elements, tandem repeats (satellites and microsatellites), and organellar DNA accumulate on the Y (W) chromosomes. In this paper, we review the main types of repetitive elements, their gathering on the Y chromosome, and discuss new findings showing that not only accumulation of various repeats in non-recombining regions but also opposite processes form Y chromosome. The aim of this review is also to discuss the mechanisms of repetitive DNA spread involving (retro) transposition, DNA polymerase slippage or unequal crossing-over, as well as modes of repeat removal by ectopic recombination. The intensity of these processes differs in non-recombining region(s) of sex chromosomes when compared to the recombining parts of genome. We also speculate about the relationship between heterochromatinization and the formation of heteromorphic sex chromosomes.

Citing Articles

Harbinger transposon insertion in ethylene signaling gene leads to emergence of new sexual forms in cucurbits.

Huang H, Zhang S, Choucha F, Verdenaud M, Tan F, Pichot C Nat Commun. 2024; 15(1):4877.

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Sexy ways: approaches to studying plant sex chromosomes.

Hobza R, Bacovsky V, Cegan R, Horakova L, Hubinsky M, Janicek T J Exp Bot. 2024; 75(17):5204-5219.

PMID: 38652048 PMC: 11389836. DOI: 10.1093/jxb/erae173.

Non-canonical bases differentially represented in the sex chromosomes of the dioecious plant Silene latifolia.

Hubinsky M, Hobza R, Starczak M, Gackowski D, Kubat Z, Janicek T J Exp Bot. 2024; 75(13):3849-3861.

PMID: 38652039 PMC: 11233409. DOI: 10.1093/jxb/erae178.

Genomic profiling of dioecious Amaranthus species provides novel insights into species relatedness and sex genes.

Raiyemo D, Bobadilla L, Tranel P BMC Biol. 2023; 21(1):37.

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Sex Determination in : Evidence of Heteromorphic Sex Chromosomes and Sex-Linked NORs.

Ngo Ngwe F, Siljak-Yakovlev S Plants (Basel). 2023; 12(2).

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