Origin of Spergularia ×kurkae, a hybrid between the rare endemic S. echinosperma and its widespread congener S. rubra

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F16%3AN0000081" target="_blank" >RIV/00023272:_____/16:N0000081 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Origin of Spergularia ×kurkae, a hybrid between the rare endemic S. echinosperma and its widespread congener S. rubra

Original language description

The origin of Spergularia ×kurkae, a presumed tetraploid hybrid between the diploid central European endemic S. echinosperma and its widespread tetraploid congener S. rubra, was investigated by sequencing the nrDNA ITS region and cpDNA rpoC1 intron. Spergularia echinosperma and S. rubra differed markedly in their ITS sequences. The presence of both sequences within the genome of S. ×kurkae confirmed its hybrid origin and parentage; cpDNA sequences identified S. echinosperma as the sole maternal parent. Because both parental ITS homeologs were clearly visible in the sequences of almost all of the S. ×kurkae individuals, we conclude that this taxon is of a relatively young age. We hypothesize that S. ×kurkae might have evolved as a result of human-mediated introduction of S. rubra into fishponds. Cross-amplification of species-specific ITS primers revealed high levels of intra-individual ITS polymorphisms in S. echinosperma and S. rubra. Our results suggest ongoing gene flow from S. ×kurkae to S. rubra. In contrast, no evidence of gene flow from S. ×kurkae or S. rubra to S. echinosperma was found, providing, despite concerns, no support for the threat of the genetic assimilation of S. echinosperma. Our current data also support the view of S. kurkae as a stabilized, separate allopolyploid species.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Preslia

ISSN

0032-7786

e-ISSN

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Volume of the periodical

88

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

17

Pages from-to

391-407

UT code for WoS article

000387096200004

EID of the result in the Scopus database

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