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

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About: Interspecific hybridization in the genus Hieracium (s. str.) – evidence for bidirectional gene flow and spontaneous allopolyploidization Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	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. 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. (en)
Title	Interspecific hybridization in the genus Hieracium (s. str.) – evidence for bidirectional gene flow and spontaneous allopolyploidization Interspecific hybridization in the genus Hieracium (s. str.) – evidence for bidirectional gene flow and spontaneous allopolyploidization (en)
skos:prefLabel	Interspecific hybridization in the genus Hieracium (s. str.) – evidence for bidirectional gene flow and spontaneous allopolyploidization Interspecific hybridization in the genus Hieracium (s. str.) – evidence for bidirectional gene flow and spontaneous allopolyploidization (en)
skos:notation	RIV/67985939:_____/11:00364321!RIV12-AV0-67985939
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP506/10/1363), Z(AV0Z60050516)
http://linked.open...iv/cisloPeriodika	1-4
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Fehrer, Judith Chrtek, Jindřich
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Botanický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	205525
http://linked.open...ai/riv/idVysledku	RIV/67985939:_____/11:00364321
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	additive polymorphism; hybridization; polyploidization (en)
http://linked.open.../riv/klicoveSlovo	additive polymorphism polyploidization hybridization
http://linked.open...odStatuVydavatele	AT - Rakouská republika
http://linked.open...ontrolniKodProRIV	[E8B4F99BC058]
http://linked.open...i/riv/nazevZdroje	Plant Systematics and Evolution
http://linked.open...in/vavai/riv/obor	EF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Phylogeny of subtribe Hieraciinae (Asteraceae) – a model example of contrasting evolutionary strategies in closely related lineages
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	293
http://linked.open...iv/tvurceVysledku	Chrtek, Jindřich Mráz, P. Fehrer, Judith
http://linked.open...ain/vavai/riv/wos	000290491000023
http://linked.open...n/vavai/riv/zamer	Struktura, funkce a evoluce biodiversity fotoautotrofních organismů a hub: původ a příčiny jejich proměnlivosti, dynamika populací, společenstev a ekosystémů; využití vybraných výsledků k rozvoji Průhonického parku
issn	0378-2697
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s00606-011-0441-3

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