Evolutionary dynamics of transposable elements and satellite DNAs in polyploid Spartina species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081707%3A_____%2F21%3A00541998" target="_blank" >RIV/68081707:_____/21:00541998 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0168945220302776?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0168945220302776?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.plantsci.2020.110671" target="_blank" >10.1016/j.plantsci.2020.110671</a>

Result language

angličtina

Original language name

Evolutionary dynamics of transposable elements and satellite DNAs in polyploid Spartina species

Original language description

Repeated sequences and polyploidy play a central role in plant genome dynamics. Here, we analyze the evolutionary dynamics of repeats in tetraploid and hexaploid Spartina species that diverged during the last 10 million years within the Chloridoideae, one of the poorest investigated grass lineages. From high-throughput genome sequencing, we annotated Spartina repeats and determined what sequence types account for the genome size variation among species. We examined whether differential genome size evolution correlated with ploidy levels and phylogenetic relationships. We also examined the tempo of repeat sequence dynamics associated with allopatric speciation over the last 3-6 million years between hexaploid species that diverged on the American and European Atlantic coasts and tetraploid species from North and South America. The tetraploid S. spartinae, whose phylogenetic placement has been debated, exhibits a similar repeat content as hexaploid species, suggesting common ancestry. Genome expansion or contraction resulting from repeat dynamics seems to be explained mostly by the contrasting divergence times between species, rather than by genome changes triggered by ploidy level change per se. One 370 bp satellite may be exhibiting `meiotic drive' and driving chromosome evolution in S. alterniflora. Our results provide crucial insights for investigating the genetic and epigenetic consequences of such differential repeat dynamics on the ecology and distribution of the meso- and neopolyploid Spartina species.

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

10608 - Biochemistry and molecular biology

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

Plant Science

ISSN

0168-9452

e-ISSN

1873-2259

Volume of the periodical

302

Issue of the periodical within the volume

JAN 2021

Country of publishing house

IE - IRELAND

Number of pages

14

Pages from-to

110671

UT code for WoS article

000599498300005

EID of the result in the Scopus database

2-s2.0-85097483319