Novelty and Convergence in Adaptation to Whole Genome Duplication

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F21%3A00119674" target="_blank" >RIV/00216224:14740/21:00119674 - isvavai.cz</a>

Alternative codes found

RIV/67985939:_____/21:00547548 RIV/00216208:11310/21:10435727

Result on the web

<a href="https://academic.oup.com/mbe/article/38/9/3910/6203814" target="_blank" >https://academic.oup.com/mbe/article/38/9/3910/6203814</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/molbev/msab096" target="_blank" >10.1093/molbev/msab096</a>

Result language

angličtina

Original language name

Novelty and Convergence in Adaptation to Whole Genome Duplication

Original language description

Whole genome duplication (WGD) can promote adaptation but is disruptive to conserved processes, especially meiosis. Studies in Arabidopsis arenosa revealed a coordinated evolutionary response to WGD involving interacting proteins controlling meiotic crossovers, which are minimized in an autotetraploid (within-species polyploid) to avoid missegregation. Here, we test whether this surprising flexibility of a conserved essential process, meiosis, is recapitulated in an independent WGD system, Cardamine amara, 17 My diverged from A. arenosa. We assess meiotic stability and perform population-based scans for positive selection, contrasting the genomic response to WGD in C. amara with that of A. arenosa. We found in C amara the strongest selection signals at genes with predicted functions thought important to adaptation to WGD: meiosis, chromosome remodeling, cell cycle, and ion transport. However, genomic responses to WGD in the two species differ: minimal ortholog-level convergence emerged, with none of the meiosis genes found in A. arenosa exhibiting strong signal in C amara. This is consistent with our observations of lower meiotic stability and occasional clonal spreading in diploid C amara, suggesting that nascent C. amara autotetraploid lineages were pre-adapted by their diploid lifestyle to survive while enduring reduced meiotic fidelity. However, in contrast to a lack of ortholog convergence, we see process-level and network convergence in DNA management, chromosome organization, stress signaling, and ion homeostasis processes. This gives the first insight into the salient adaptations required to meet the challenges of a WGD state and shows that autopolyploids can utilize multiple evolutionary trajectories to adapt to WGD.

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

10611 - Plant sciences, botany

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)

Publication year

2021

Confidentiality

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

Name of the periodical

Molecular Biology and Evolution

ISSN

0737-4038

e-ISSN

—

Volume of the periodical

38

Issue of the periodical within the volume

9

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

3910-3924

UT code for WoS article

000693664800031

EID of the result in the Scopus database

2-s2.0-85106359545