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Multispeed genome diploidization and diversification after an ancient allopolyploidization

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F17%3A00095490" target="_blank" >RIV/00216224:14740/17:00095490 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1111/mec.14379" target="_blank" >http://dx.doi.org/10.1111/mec.14379</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1111/mec.14379" target="_blank" >10.1111/mec.14379</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Multispeed genome diploidization and diversification after an ancient allopolyploidization

  • Original language description

    Hybridization and genome doubling (allopolyploidy) have led to evolutionary novelties as well as to the origin of new clades and species. Despite the importance of allopolyploidization, the dynamics of postpolyploid diploidization (PPD) at the genome level has been only sparsely studied. The Microlepidieae (MICR) is a crucifer tribe of 17 genera and c. 56 species endemic to Australia and New Zealand. Our phylogenetic and cytogenomic analyses revealed that MICR originated via an intertribal hybridization between ancestors of Crucihimalayeae (n = 8; maternal genome) and Smelowskieae (n = 7; paternal genome), both native to the Northern Hemisphere. The reconstructed ancestral allopolyploid genome (n = 15) originated probably in northeastern Asia or western North America during the Late Miocene (c. 10.6-7 million years ago) and reached the Australian mainland via long-distance dispersal. In Australia, the allotetraploid genome diverged into at least three main subclades exhibiting different levels of PPD and diversity: 1.25-fold descending dysploidy (DD) of n = 15 -&gt; n = 12 (autopolyploidy -&gt; 24) in perennial Arabidella (3 species), 1.5-fold DD of n = 15 -&gt; n = 10 in the perennial Pachycladon (11 spp.) and 2.1-3.75-fold DD of n = 15 -&gt; n = 7-4 in the largely annual crown-group genera (42 spp. in 15 genera). These results are among the first to demonstrate multispeed genome evolution in taxa descending from a common allopolyploid ancestor. It is suggested that clade-specific PPD can operate at different rates and efficacies and can be tentatively linked to life histories and the extent of taxonomic diversity.

  • 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

    2017

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Molecular Ecology

  • ISSN

    0962-1083

  • e-ISSN

  • Volume of the periodical

    26

  • Issue of the periodical within the volume

    22

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    18

  • Pages from-to

    6445-6462

  • UT code for WoS article

    000417241800018

  • EID of the result in the Scopus database