ArticleBMC evolutionary biology2020
Gene flow between diploid and tetraploid junipers - two contrasting evolutionary pathways in two Juniperus populations.
Article in BMC evolutionary biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Molecular signatures of adaptive introgression and selection in contact zones of closely related pine species (Pinus genus).BMC plant biology · 2025Article
- Interspecific transfer of genetic information through polyploid bridges.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Allopolyploidy: An Underestimated Driver inLife (Basel, Switzerland) · 2023Article
- Genome balance and dosage effect drive allopolyploid formation inProceedings of the National Academy of Sciences of the United States of America · 2023Article
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8 authors.
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Abstract
backgroundGene flow and polyploidy have been found to be important in Juniperus evolution. However, little evidence has been published elucidating the association of both phenomena in juniper taxa in the wild. Two main areas were studied in Spain (Eastern Iberian Range and Sierra de Baza) with both diploid and tetraploid taxa present in sympatry. Gene flow and ploidy level were assessed for these taxa and the resulted offspring.
resultsTwenty-two allo-triploid hybrids between J. sabina var. sabina and J. thurifera were found in the Eastern Iberian Range population. However, in the Sierra de Baza population no triploids were found. Instead, 18 allo-tetraploid hybrids between two tetraploid taxa: J. sabina var. balkanensis and J. thurifera were discovered. High genetic diversity was exhibited among the tetraploid hybrids at Sierra de Baza, in contrast to the genetically identical triploid hybrids at the Eastern Iberian Range; this suggests meiotic difficulties within the triploid hybrids. In addition, unidirectional gene flow was observed in both studied areas.
conclusionPolyploidy and hybridization can be complementary partners in the evolution of Juniperus taxa in sympatric occurrences. Juniperus was shown to be an ideal coniferous model to study these two phenomena, independently or in concert.
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