Interspecific hybridization in the genus Hieracium (s. str.) ? evidence for bidirectional gene flow and spontaneous allopolyploidization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F11%3A00364321" target="_blank" >RIV/67985939:_____/11:00364321 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00606-011-0441-3" target="_blank" >http://dx.doi.org/10.1007/s00606-011-0441-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00606-011-0441-3" target="_blank" >10.1007/s00606-011-0441-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interspecific hybridization in the genus Hieracium (s. str.) ? evidence for bidirectional gene flow and spontaneous allopolyploidization

Popis výsledku v původním jazyce

Well-documented cases of recent interspecific hybridization in Hieracium s. str. are very rare. We report combined evidence on recent hybridization between two diploid species, H. alpinum and H. transsilvanicum, based on additive patterns of nrDNA polymorphism (ITS), an intermediate position of hybrid plants in PCO analyses based on AFLP phenotypes, and additivity at one allozyme locus. Two hybrids were diploid while one was surprisingly tetraploid. This is the first record of spontaneous polyploidization following interspecific crossing in the genus. Allozyme data suggest the origin of this tetraploid via a triploid bridge with subsequent backcrossing to H. alpinum. All H. x krasani hybrids had the H. alpinum cpDNA haplotype while H. transsilvanicum served as a pollen donor. The hybrids occurred together with abundant H. alpinum plants; paternal H. transsilvanicum was missing. The direction of hybridization might be influenced by the frequency of parental taxa at the locality.

Název v anglickém jazyce

Interspecific hybridization in the genus Hieracium (s. str.) ? evidence for bidirectional gene flow and spontaneous allopolyploidization

Popis výsledku anglicky

Well-documented cases of recent interspecific hybridization in Hieracium s. str. are very rare. We report combined evidence on recent hybridization between two diploid species, H. alpinum and H. transsilvanicum, based on additive patterns of nrDNA polymorphism (ITS), an intermediate position of hybrid plants in PCO analyses based on AFLP phenotypes, and additivity at one allozyme locus. Two hybrids were diploid while one was surprisingly tetraploid. This is the first record of spontaneous polyploidization following interspecific crossing in the genus. Allozyme data suggest the origin of this tetraploid via a triploid bridge with subsequent backcrossing to H. alpinum. All H. x krasani hybrids had the H. alpinum cpDNA haplotype while H. transsilvanicum served as a pollen donor. The hybrids occurred together with abundant H. alpinum plants; paternal H. transsilvanicum was missing. The direction of hybridization might be influenced by the frequency of parental taxa at the locality.

Druh

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

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP506%2F10%2F1363" target="_blank" >GAP506/10/1363: Fylogeneze subtribu Hieraciinae (Asteraceae) ? modelový příklad kontrastních evolučních strategií v blízce příbuzných liniích</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

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

—

Svazek periodika

293

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

9

Strana od-do

237-245

Kód UT WoS článku

000290491000023

EID výsledku v databázi Scopus

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