Heliosperma

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Heliosperma
Heliosperma pusillum.jpg
Heliosperma pusillum
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Caryophyllaceae
Genus: Heliosperma
(Rchb.) Rchb.
Synonyms   [1]
  • Ixoca Raf.
  • Silene sect. HeliospermaRchb.

Heliosperma is a genus of flowering plants in the family Caryophyllaceae. [2] As such, it is closely related to the large genus Silene , but its members can be told apart from Silene by the crest of long papillae on the seeds. [1] The majority of the species are narrow endemics from the Balkan Peninsula, but H. alpestre is endemic to the Eastern Alps, and H. pusillum is found from the Cordillera Cantábrica in northern Spain to the Carpathians. [3] Like members of the genus Silene and other related genera, Heliosperma is attacked by species of the anther smut fungus Microbotryum . [4] Cases of parallel divergence events between alpine and mountain populations have been reported in this genus. [5] [6]

Contents

Species

Around 15 species are currently recognised in the genus: [7]

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<i>Heliosperma pusillum</i> Species of flowering plant

Heliosperma pusillum is a species of flowering plants in the family Caryophyllaceae. It is native to mountain ranges of Western Europe. It's a species of plants with a complex evolutionary history characterized by repeated ecological divergence.

In biology, parallel speciation is a type of speciation where there is repeated evolution of reproductively isolating traits via the same mechanisms occurring between separate yet closely related species inhabiting different environments. This leads to a circumstance where independently evolved lineages have developed reproductive isolation from their ancestral lineage, but not from other independent lineages that inhabit similar environments. In order for parallel speciation to be confirmed, there is a set of three requirements that has been established that must be met: there must be phylogenetic independence between the separate populations inhabiting similar environments to ensure that the traits responsible for reproductive isolation evolved separately, there must be reproductive isolation not only between the ancestral population and the descendent population, but also between descendent populations that inhabit dissimilar environments, and descendent populations that inhabit similar environments must not be reproductively isolated from one another. To determine if natural selection specifically is the cause of parallel speciation, a fourth requirement has been established that includes identifying and testing an adaptive mechanism, which eliminates the possibility of a genetic factor such as polyploidy being the responsible agent.

References

  1. 1 2 Božo Frajman; Richard K. Rabeler (2006). "Proposal to conserve the name Heliosperma against Ixoca (Caryophyllaceae, Sileneae)" (PDF). Taxon . 55 (3): 801–808. doi:10.2307/25065663. hdl: 2027.42/146904 . JSTOR   25065663.
  2. Božo Frajman; Frida Eggens; Bengt Oxelman (2009). "Hybrid origins and homoploid reticulate evolution within Heliosperma (Sileneae, Caryophyllaceae) – a multigene phylogenetic approach with relative dating". Systematic Biology . 58 (3): 328–345. doi: 10.1093/sysbio/syp030 . PMID   20525587.
  3. Božo Frajman (2007). Taxonomy and reticulate phylogeny of Heliosperma and related genera (Sileneae, Caryophyllaceae) (PDF) (Ph.D. thesis). Uppsala University. ISBN   978-91-554-6946-7.
  4. Marcin Piątek; Matthias Lutz; Anna Ronikier; Martin Kemler; Urszula Świderska-Burek (2012). "Microbotryum heliospermae, a new anther smut fungus parasitic on Heliosperma pusillum in the mountains of the European Alpine System". Fungal Biology . 116 (2): 185–195. doi:10.1016/j.funbio.2011.10.011. PMID   22289764.
  5. Trucchi, Emiliano; Frajman, Božo; Haverkamp, Thomas H. A.; Schönswetter, Peter; Paun, Ovidiu (2017). "Genomic analyses suggest parallel ecological divergence in Heliosperma pusillum (Caryophyllaceae)". New Phytologist . 216 (1): 267–278. doi: 10.1111/nph.14722 . ISSN   1469-8137. PMC   5601199 . PMID   28782803.
  6. Szukala, Aglaia; Lovegrove-Walsh, Jessica; Luqman, Hirzi; Fior, Simone; Wolfe, Thomas Mahteson; Frajman, Bozo; Schoenswetter, Peter; Paun, Ovidiu (2022). "Polygenic routes lead to parallel altitudinal adaptation in Heliosperma pusillum (Caryophyllaceae)". Molecular Ecology . mec.16393. doi: 10.1111/mec.16393 . hdl: 20.500.11850/535673 .
  7. Božo Frajman; Bengt Oxelman (2007). "Reticulate phylogenetics and phytogeographical structure of Heliosperma (Sileneae, Caryophyllaceae) inferred from chloroplast and nuclear DNA sequences" (PDF). Molecular Phylogenetics and Evolution . 43 (1): 140–155. doi:10.1016/j.ympev.2006.11.003. PMID   17188521.

Further reading