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Idahoa and Subularia: Hidden polyploid origins of two enigmatic genera of crucifers

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F22%3A00127509" target="_blank" >RIV/00216224:14740/22:00127509 - isvavai.cz</a>

  • Result on the web

    <a href="https://bsapubs.onlinelibrary.wiley.com/doi/10.1002/ajb2.16042" target="_blank" >https://bsapubs.onlinelibrary.wiley.com/doi/10.1002/ajb2.16042</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/ajb2.16042" target="_blank" >10.1002/ajb2.16042</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Idahoa and Subularia: Hidden polyploid origins of two enigmatic genera of crucifers

  • Original language description

    Premise The monotypic Idahoa (I. scapigera) and the bispecific Subularia (S. aquatica and S. monticola) belong to Brassicaceae with unclear phylogenetic relationships and no tribal assignment. To fill this knowledge gap, we investigated these species and their closest relatives by combining cytogenomic and phylogenomic methods. Methods We used whole plastome sequences in maximum likelihood and Bayesian inference analyses. We tested the phylogenetic informativeness of shared genomic repeats. We combined nuclear gene tree reconciliation and comparative chromosome painting (CCP) to examine the occurrence of past whole-genome duplications (WGDs). Results The plastid data set corroborated the sister relationship between Idahoa and Subularia within the crucifer Lineage V but failed to resolve consistent topologies using both inference methods. The shared repetitive sequences provided conflicting pwhylogenetic signals. CCP analysis unexpectedly revealed that Idahoa (2n = 16) has a diploidized mesotetraploid genome, whereas two Subularia species (2n = 28 and 30) have diploidized mesoctoploid genomes. Several ancient allopolyploidy events have also been detected in closely related taxa (Chamira circaeoides, Cremolobeae, Eudemeae, and Notothlaspideae). Conclusions Our results suggest that the contentious phylogenetic placement of Idahoa and Subularia is best explained by two WGDs involving one or more shared parental genomes. The newly identified mesopolyploid genomes highlight the challenges of studying plant clades with complex polyploidy histories and provide a better framework for understanding genome evolution in the crucifer family.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10611 - Plant sciences, botany

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2022

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    American Journal of Botany

  • ISSN

    0002-9122

  • e-ISSN

  • Volume of the periodical

    109

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    17

  • Pages from-to

    1273-1289

  • UT code for WoS article

    000844517500001

  • EID of the result in the Scopus database

    2-s2.0-85137046419