Origin and genetic differentiation of pink-flowered Sorbus hybrids in the Western Carpathians

Uhrinová, Veronika; Zozomová‐Lihová, Judita; Bernátová, Dana; Paule, Juraj; Paule, Ladislav; Gömöry, Dušan

doi:10.1093/aob/mcx013

Cited by 16 publications

(18 citation statements)

References 42 publications

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“…The molecular results are also in agreement with previous studies [11,28,29,65]. Probably due to the comparatively distant relationship of the compound leaved S. aucuparia and the other, simple-leaved 'basic' European Sorbus taxa S. torminalis, S. chamaemespilus and S. aria agg.…”

Section: Taxonomic Chorological and Nomenclatural Notessupporting

confidence: 92%

“…In biparental subgenus Tormaria Sorbus aria s.l. appears to be the most frequent pollen donor in hybridizations [1,11,17,30,45,46,52,57,58,65], contrary to the very rare reverse direction of pollen flow [45,46]. As a second step the triploid subgenus Tormaria progeny as pollen donor with an unreduced triploid pollen fertilizes a haploid reduced female egg of S. aucuparia inheriting the chloroplast genes from the latter one and creating a tetraploid trigenomic subgenus Triparens species.…”

Section: Putative Scenarios Of Triparens Speciationmentioning

confidence: 99%

“…The overwhelming majority of the hybridogenous Sorbus species are also of bipatental origin usually with S. torminalis (L.) Crantz or S. aucuparia L., more rarely S. chamaemespilus (L.) Crantz as maternal parent and a member of S. aria agg. as the paternal parent [1,11,17,30,45,46,52,57,58,65] ). There is, however, sporadic evidence for triparental speciation in Sorbus.…”

Section: Introductionmentioning

confidence: 99%

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Speciation by triparental hybridization in genus Sorbus (Rosaceae)

et al. 2020

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Hybridization associated with polyploidization and apomixis is a frequent mechanism of speciation. Sorbus is a genus with ongoing hybridization resulting in a polyploid complex with different parental lineage. Triparens is the smallest hybridogenous subgenus of Sorbus so far known to comprise only two taxa, S. intermedia and S. × liljeforsii that combine the genomes of three taxa (S. aria agg., S. aucuparia and S. torminalis). To elucidate the origins of S. dacica, S. paxiana and S. tauricola, three new trigenomic candidates formerly believed to be of biparental origin with either S. aria agg. × S. aucuparia or S. aria agg. × S. torminalis lineage we combined data from HPLC and chloroplast DNA analysing additional 33 related taxa as well. We concluded that the ‘torminalis-type’ flavonoid profile and the ‘aucuparia-type’ plastid indicate the participation of both S. torminalis and S. aucuparia resulting in the formation of S. dacica, S. paxiana and S. tauricola. Sorbus aria agg. as the third ancestor and as a necessary link to meet genes of S. torminalis and S. aucuparia in one genome is obvious from morphological features (densely tomentose undersides of leaves). The tetraploid cytotypes and obligate pseudogamy of S. dacica and S. paxiana were determined by flow cytometry and are published here for the first time. The most probable evolutionary scenario for Triparens species is: 1. a diploid sexual S. aucuparia as pollen acceptor hybridized with a tetraploid apomictic taxon from the S. aria agg. producing a triploid apomictic taxon with ‘aucuparia-type’ plastid inherited maternally; 2. during a second crossing event this subgenus Soraria hybrid as maternal progenitor hybridized with the sexual diploid S. torminalis (providing gene(s) of apigenin O-glucuronide synthesis) forming a tetraploid Triparens hybrid with ‘aucuparia-type’ plastid and ‘torminalis-type’ flavonoids.

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Section: Taxonomic Chorological and Nomenclatural Notessupporting

confidence: 92%

Section: Putative Scenarios Of Triparens Speciationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Speciation by triparental hybridization in genus Sorbus (Rosaceae)

et al. 2020

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“…Whereas the standard barcoding markers resolved the taxonomic groups in Crataegus L. poorly due to supposed hybridization between different lineages of the genus (Zarrei & al. 2015), a genetic evidence of parentage in 11 hybrid species of Sorbus L. in Central Europe was given, combining the chloroplast DNA and AFLP markers (Uhrinová & al. 2017).…”

Section: Evidence and Impact Of Hybridization In Other Apomictic Genementioning

confidence: 99%

“…2017). These Sorbus hybrids among sexual parents are polyploid and supposedly apomictic and may or may not be discriminated by morphology (Uhrinová & al. 2017).…”

Section: Evidence and Impact Of Hybridization In Other Apomictic Genementioning

confidence: 99%