Ecological segregation drives fine scale cytotype distribution of Senecio carniolicus (Asteraceae) in the Eastern Alps

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F09%3A00014397" target="_blank" >RIV/00216208:11310/09:00014397 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Ecological segregation drives fine scale cytotype distribution of Senecio carniolicus (Asteraceae) in the Eastern Alps

Popis výsledku v původním jazyce

How cytotype mixture in populations is being maintained is a central question in evolutionary polyploidy research. In order to uncover patterns and processes of segregation of co-existing cytotypes, we investigated a contact zone of diploid and hexaploidindividuals of the alpine herb Senecio carniolicus Willd. (Asteraceae) in the eastern Alps (Austria). Linking the fine-scale distribution of cytotypes to environmental and spatial factors, segregation along an ecological gradient was found, which was also reflected by cytotype-associated plant assemblages. Compared to diploids, hexaploids are found in more species-rich and denser communities, which may be due to higher competitive capabilities and lower tolerance against abiotic stress of the polyploids. The lack of any intermediate cytotypes suggests the presence of strong reproductive isolation mechanisms, whose nature is, however, elusive.

Název v anglickém jazyce

Ecological segregation drives fine scale cytotype distribution of Senecio carniolicus (Asteraceae) in the Eastern Alps

Popis výsledku anglicky

How cytotype mixture in populations is being maintained is a central question in evolutionary polyploidy research. In order to uncover patterns and processes of segregation of co-existing cytotypes, we investigated a contact zone of diploid and hexaploidindividuals of the alpine herb Senecio carniolicus Willd. (Asteraceae) in the eastern Alps (Austria). Linking the fine-scale distribution of cytotypes to environmental and spatial factors, segregation along an ecological gradient was found, which was also reflected by cytotype-associated plant assemblages. Compared to diploids, hexaploids are found in more species-rich and denser communities, which may be due to higher competitive capabilities and lower tolerance against abiotic stress of the polyploids. The lack of any intermediate cytotypes suggests the presence of strong reproductive isolation mechanisms, whose nature is, however, elusive.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

PRESLIA

ISSN

0032-7786

e-ISSN

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Svazek periodika

81

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

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Kód UT WoS článku

000271383800008

EID výsledku v databázi Scopus

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