Establishment of polyploidy in natural populations of Mimulus guttatus

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F24%3A00598831" target="_blank" >RIV/67985939:_____/24:00598831 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/24:10486394

Výsledek na webu

<a href="https://doi.org/10.1007/s00606-024-01914-1" target="_blank" >https://doi.org/10.1007/s00606-024-01914-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00606-024-01914-1" target="_blank" >10.1007/s00606-024-01914-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Establishment of polyploidy in natural populations of Mimulus guttatus

Popis výsledku v původním jazyce

Whole-genome duplication (WGD) is a leading force of plant sympatric speciation. However, the evolutionary mechanisms promoting the establishment of neopolyploid mutants in nature remain elusive. We studied polyploid establishment in a unique natural system of Mimulus guttatus (Phrymaceae) in Shetland where a recently (< 100 years ago) locally formed autotetraploid still coexists with its diploid progenitor. We cytotyped 679 adults and 766 seedlings and scored relevant reproductive traits in the field and performed controlled crossings to infer differences in plant performance and get a first insight into the crossing barriers between ploidies. Tetraploids grew in 25% of Shetland populations, mostly in mixtures with diploids, but triploids were absent both among seedlings and adults. Seeds of both cytotypes sampled in areas of immediate sympatry exhibited similar, high germination rates (98% on average). In contrast, low (2%) germination of progeny from controlled interploidy crosses demonstrated strong postzygotic isolation. Yet, plants simultaneously pollinated by diploid and tetraploid pollen donors set viable progeny with ploidy levels identical to the seed parent. The abundant presence of fertile tetraploids in the field despite strong postzygotic isolation demonstrates the ability of novel autopolyploids to cope with both intrinsic and extrinsic challenges associated with WGD and to successfully establish in nature.

Název v anglickém jazyce

Establishment of polyploidy in natural populations of Mimulus guttatus

Popis výsledku anglicky

Whole-genome duplication (WGD) is a leading force of plant sympatric speciation. However, the evolutionary mechanisms promoting the establishment of neopolyploid mutants in nature remain elusive. We studied polyploid establishment in a unique natural system of Mimulus guttatus (Phrymaceae) in Shetland where a recently (< 100 years ago) locally formed autotetraploid still coexists with its diploid progenitor. We cytotyped 679 adults and 766 seedlings and scored relevant reproductive traits in the field and performed controlled crossings to infer differences in plant performance and get a first insight into the crossing barriers between ploidies. Tetraploids grew in 25% of Shetland populations, mostly in mixtures with diploids, but triploids were absent both among seedlings and adults. Seeds of both cytotypes sampled in areas of immediate sympatry exhibited similar, high germination rates (98% on average). In contrast, low (2%) germination of progeny from controlled interploidy crosses demonstrated strong postzygotic isolation. Yet, plants simultaneously pollinated by diploid and tetraploid pollen donors set viable progeny with ploidy levels identical to the seed parent. The abundant presence of fertile tetraploids in the field despite strong postzygotic isolation demonstrates the ability of novel autopolyploids to cope with both intrinsic and extrinsic challenges associated with WGD and to successfully establish in nature.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

<a href="/cs/project/GA20-22783S" target="_blank" >GA20-22783S: Genomová duplikace jako nedokonalá speciační bariéra? Evoluční mechanismy a důsledky mezi-ploidní introgrese v přírodních populacích</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Plant Systematics and Evolution

ISSN

0378-2697

e-ISSN

1615-6110

Svazek periodika

310

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

14

Strana od-do

30

Kód UT WoS článku

001284707300001

EID výsledku v databázi Scopus

2-s2.0-85200456184