Telomere sequence variability in genotypes from natural plant populations: unusual block-organized double-monomer terminal telomeric arrays.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F23%3A00576215" target="_blank" >RIV/67985939:_____/23:00576215 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41330/23:97282

Result on the web

<a href="https://doi.org/10.1186/s12864-023-09657-y" target="_blank" >https://doi.org/10.1186/s12864-023-09657-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s12864-023-09657-y" target="_blank" >10.1186/s12864-023-09657-y</a>

Result language

angličtina

Original language name

Telomere sequence variability in genotypes from natural plant populations: unusual block-organized double-monomer terminal telomeric arrays.

Original language description

Telomeres are the nucleoprotein complexes that physically cap the ends of eukaryotic chromosomes. Most plants possess Arabidopsis-type telomere sequences (TSs). In addition to terminal TSs, more diverse interstitial TSs exists in plants. Although telomeres have been sufficiently studied, the actual diversity of TSs in land plants is underestimated. nWe investigate genotypes from seven natural populations with contrasting environments of four Chenopodium species to reveal the variability in TSs by analyzing Oxford Nanopore reads. Fluorescent in situ hybridization was used to localize telomeric repeats on chromosomes. We identified a number of derivative monomers that arise in part of both terminal and interstitial telomeric arrays of a single genotype. The former presents a case of block-organized double-monomer telomers, where blocks of Arabidopsis-type TTTAGGG motifs were interspersed with blocks of derivative TTTAAAA motifs. The latter is an integral part of the satellitome with transformations specific to the inactive genome fraction.nWe suggested two alternative models for the possible formation of derivative monomers from telomeric heptamer motifs of Arabidopsis-type. It was assumed that derivatization of TSs is a ubiquitous process in the plant genome but occurrence and frequencies of derivatives may be genotype-specific. We also propose that the formation of non-canonical arrays of TSs, especially at chromosomal termini, may be a source for genomic variability in nature.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/GA20-20286S" target="_blank" >GA20-20286S: Repeatome evolution in plant allopolyploids: An outcome from the diploid-polyploid complex of the Chenopodium album aggregate</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

BMC Genomics

ISSN

1471-2164

e-ISSN

1471-2164

Volume of the periodical

24

Issue of the periodical within the volume

September

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

572

UT code for WoS article

001073855600003

EID of the result in the Scopus database

2-s2.0-85172121267