Niche similarity in diploid-autotetraploid contact zones of Arabidopsis arenosaacross spatial scales

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F20%3A43901389" target="_blank" >RIV/60076658:12310/20:43901389 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/20:00533715 RIV/00216208:11310/20:10420557

Výsledek na webu

<a href="https://bsapubs.onlinelibrary.wiley.com/doi/10.1002/ajb2.1534" target="_blank" >https://bsapubs.onlinelibrary.wiley.com/doi/10.1002/ajb2.1534</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ajb2.1534" target="_blank" >10.1002/ajb2.1534</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Niche similarity in diploid-autotetraploid contact zones of Arabidopsis arenosaacross spatial scales

Popis výsledku v původním jazyce

Premise Whole genome duplication is a major evolutionary event, but its role in ecological divergence remains equivocal. When populations of different ploidy (cytotypes) overlap in space, &quot;contact zones&quot; are formed, allowing the study of evolutionary mechanisms contributing toward ploidy divergence. Multiple contact zones per species&apos; range are often described but rarely leveraged as natural replicates. We explored whether the strength of niche differentiation of diploid and autotetraploidArabidopsis arenosavaries over distinct contact zones and if the frequency of triploids decreases from seedling to adult stage. Methods We characterized ploidy composition and habitat preferences in 264 populations across three contact zones using climatic niche modeling. Ecological differences of cytotypes were also assessed using local vegetation surveys at 110 populations within two contact zones, and at the finer scale within five mixed-ploidy sites. This was complemented by flow cytometry of seedlings. Results We found no niche differences between diploid and tetraploid populations within contact zones for either climatic or local environmental variables. Comparisons of cytotypes within mixed-ploidy sites found weak niche differences that were inconsistent in direction. Triploid individuals were virtually absent (0.14%) in the field, and they were at a similarly low frequency (0.2%) in ex situ germinated seedlings. Conclusions This study demonstrates the strength in investigating different spatial scales across several contact zones when addressing ecological niche differentiation between ploidies. The lack of consistent habitat differentiation of ploidies across the scales and locations supports the recently emerging picture that processes other than ecological differentiation may underlie ploidy coexistence in diploid-autopolyploid systems.

Název v anglickém jazyce

Niche similarity in diploid-autotetraploid contact zones of Arabidopsis arenosaacross spatial scales

Popis výsledku anglicky

Premise Whole genome duplication is a major evolutionary event, but its role in ecological divergence remains equivocal. When populations of different ploidy (cytotypes) overlap in space, &quot;contact zones&quot; are formed, allowing the study of evolutionary mechanisms contributing toward ploidy divergence. Multiple contact zones per species&apos; range are often described but rarely leveraged as natural replicates. We explored whether the strength of niche differentiation of diploid and autotetraploidArabidopsis arenosavaries over distinct contact zones and if the frequency of triploids decreases from seedling to adult stage. Methods We characterized ploidy composition and habitat preferences in 264 populations across three contact zones using climatic niche modeling. Ecological differences of cytotypes were also assessed using local vegetation surveys at 110 populations within two contact zones, and at the finer scale within five mixed-ploidy sites. This was complemented by flow cytometry of seedlings. Results We found no niche differences between diploid and tetraploid populations within contact zones for either climatic or local environmental variables. Comparisons of cytotypes within mixed-ploidy sites found weak niche differences that were inconsistent in direction. Triploid individuals were virtually absent (0.14%) in the field, and they were at a similarly low frequency (0.2%) in ex situ germinated seedlings. Conclusions This study demonstrates the strength in investigating different spatial scales across several contact zones when addressing ecological niche differentiation between ploidies. The lack of consistent habitat differentiation of ploidies across the scales and locations supports the recently emerging picture that processes other than ecological differentiation may underlie ploidy coexistence in diploid-autopolyploid systems.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

American Journal of Botany

ISSN

0002-9122

e-ISSN

—

Svazek periodika

107

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

1375-1388

Kód UT WoS článku

000572415000001

EID výsledku v databázi Scopus

2-s2.0-85091385237