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Cardamine occulta, the correct species name for invasive Asian plants previously classified as C. flexuosa, and its occurrence in Europe / Karol Marhold in PhytoKeys, 62 (2016) 

Public Citation [article]  inPhytoKeys > 62 (2016) . - 57-72 Titre : Cardamine occulta, the correct species name for invasive Asian plants previously classified as C. flexuosa, and its occurrence in Europe Type de document : Électronique Auteurs : Karol Marhold ; Marek Šlenker ; Hiroshi Kudoh ; Judita Zazomová Année de publication : 2016 Article en page(s) : 57-72 Langues : Français (fre) Catégories : [Géographique] Europe [Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Cardamine occulta Hornem., 1819  Cardamine flexuosa With., 1796  Cardamine flexuosa subsp. debilis  Cardamine hamiltonii Résumé : The nomenclature of Eastern Asian populations traditionally assigned to Cardamine flexuosa has remained unresolved since 2006, when they were found to be distinct from the European species C. flexuosa. Apart from the informal designation “Asian C. flexuosa”, this taxon has also been reported under the names C. flexuosa subsp. debilis or C. hamiltonii. Here we determine its correct species name to be C. occulta and present a nomenclatural survey of all relevant species names. A lectotype and epitype for C. occulta and a neotype for the illegitimate name C. debilis (replaced by C. flexuosa subsp. debilis and C. hamiltonii) are designated here. Cardamine occulta is a polyploid weed that most likely originated in Eastern Asia, but it has also been introduced to other continents, including Europe. Here data is presented on the first records of this invasive species in European countries. The first known record for Europe was made in Spain in 1993, and since then its occurrence has been reported from a number of European countries and regions as growing in irrigated anthropogenic habitats, such as paddy fields or flower beds, and exceptionally also in natural communities such as lake shores. Identifiant pérenne : DOI : 10.3897/phytokeys.62.7865 Marhold, K., Šlenker, M., Kudoh, H., Zazomová, J., 2016 - Cardamine occulta, the correct species name for invasive Asian plants previously classified as C. flexuosa, and its occurrence in Europe ; PhytoKeys, 62 : 57-72.

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Unravelling allopolyploid origins in the Alyssum montanum–A. repens species complex (Brassicaceae) : low-copy nuclear gene data complement plastid DNA sequences and AFLPs / Andrea Melicharkova in Botanical Journal of the Linnean Society, 184 (2017) 

Public Citation [article]  inBotanical Journal of the Linnean Society > 184 (2017) . - 485–502 Titre : Unravelling allopolyploid origins in the Alyssum montanum–A. repens species complex (Brassicaceae) : low-copy nuclear gene data complement plastid DNA sequences and AFLPs Type de document : Électronique Auteurs : Andrea Melicharkova ; Stanislav Spaniel ; Daniela Briskova ; Karol Marhold ; Judita Zozomová-Lihová Année de publication : 2017 Article en page(s) : 485–502 Langues : Anglais (eng) Mots-clés : Alyssum montanum L., 1753 Résumé : Reconstructing polyploid origins and reticulate evolution is challenging even if several independent markers are employed. The Alyssum montanum–A. repens group is a species complex comprising multiple polyploids with as yet insufficiently investigated origins. Here we search for the parentage of two related polyploids, A. montanum (s.s.) and A. rhodanense, using sequences of two low-copy nuclear genes and show how these data can complement and strengthen evidence based on plastid DNA and AFLPs. Whereas A. montanum, even in its strict circumscription, represents a complex of diploid and tetraploid lineages distributed from south-western Germany and western Switzerland to the foothills of the Pyrenees, A. rhodanense is a hexaploid stenoendemic from south-eastern France. In both polyploids, we revealed divergent gene copies (homoeologues) that point to their allopolyploid origins and allow the identification of their parental species. The results suggest that tetraploids of A. montanum originated from hybridization between diploids of this species and the Iberian A. fastigiatum and that multiple allopolyploidization events took place. For A. rhodanense, we propose an allopolyploid origin involving A. gmelinii and tetraploids of A. montanum. We illustrate how combined evidence from several markers contributes to more comprehensive and confident inferences about polyploid origins. Identifiant pérenne : DOI : 10.1093/botlinnean/box039 Melicharkova, A., Spaniel, S., Briskova, D., Marhold, K., Zozomová-Lihová, J., 2017 - Unravelling allopolyploid origins in the Alyssum montanum–A. repens species complex (Brassicaceae) : low-copy nuclear gene data complement plastid DNA sequences and AFLPs ; Botanical Journal of the Linnean Society, 184 : 485–502.

Documents numériques

Consultable Article (2017) Adobe Acrobat PDF