Genome size doubling arises from the differential repetitive DNA dynamics in the genus Heloniopsis (Melanthiaceae)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00122261" target="_blank" >RIV/00216224:14310/21:00122261 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3389/fgene.2021.726211" target="_blank" >https://doi.org/10.3389/fgene.2021.726211</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fgene.2021.726211" target="_blank" >10.3389/fgene.2021.726211</a>

Result language

angličtina

Original language name

Genome size doubling arises from the differential repetitive DNA dynamics in the genus Heloniopsis (Melanthiaceae)

Original language description

Plant genomes are highly diverse in size and repetitive DNA composition. In the absence of polyploidy, the dynamics of repetitive elements, which make up the bulk of the genome in many species, are the main drivers underpinning changes in genome size and the overall evolution of the genomic landscape. The advent of high-throughput sequencing technologies has enabled investigation of genome evolutionary dynamics beyond model plants to provide exciting new insights in species across the biodiversity of life. Here we analyze the evolution of repetitive DNA in two closely related species of Heloniopsis (Melanthiaceae), which despite having the same chromosome number differ nearly twofold in genome size [i.e., H. umbellata (1C = 4,680 Mb), and H. koreana (1C = 2,480 Mb)]. Low-coverage genome skimming and the RepeatExplorer2 pipeline were used to identify the main repeat families responsible for the significant differences in genome sizes. Patterns of repeat evolution were found to correlate with genome size with the main classes of transposable elements identified being twice as abundant in the larger genome of H. umbellata compared with H. koreana. In addition, among the satellite DNA families recovered, a single shared satellite (HeloSAT) was shown to have contributed significantly to the genome expansion of H. umbellata. Evolutionary changes in repetitive DNA composition and genome size indicate that the differences in genome size between these species have been underpinned by the activity of several distinct repeat lineages.

Czech name

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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

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Frontiers in Genetics

ISSN

1664-8021

e-ISSN

1664-8021

Volume of the periodical

12

Issue of the periodical within the volume

September

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

726211

UT code for WoS article

000698469800001

EID of the result in the Scopus database

2-s2.0-85115160805