Multispeed genome diploidization and diversification after an ancient allopolyploidization

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Multispeed genome diploidization and diversification after an ancient allopolyploidization

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Multispeed genome diploidization and diversification after an ancient allopolyploidization

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Molecular Ecology

ISSN

0962-1083

e-ISSN

—

Svazek periodika

26

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

6445-6462

Kód UT WoS článku

000417241800018

EID výsledku v databázi Scopus

—