Taxonomic differentiation of Salix retusa agg. (Salicaceae) based on leaf characteristics

Kosiński, Piotr; Boratyński, Adam; Hilpold, Andreas

doi:10.12657/denbio.078.005

Cited by 7 publications

(13 citation statements)

References 9 publications

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“…A recent study on leaf morphology in S. retusa agg. (Kosiński et al 2017) confirmed that S. retusa s.l. populations in the Tatra Mountains (the western Carpathians) had leaf length and width twice as long as the average found for the rest of the populations of S. retusa s.l., which corresponds to the description of S. kitaibeliana, and justify from a morphological standpoint distinguishing them as a separate taxon.…”

Section: Introductionsupporting

confidence: 56%

“…In the Pyrenees, the connection between ploidy and leaf size was clearer and in line with expectations: lower ploidy (DNA hexaploidy) corresponds in these populations to smaller leaf sizes as compared to other populations of S. retusa s.s. (Kosiński et al 2017) (Fig. 2).…”

Section: Comparison With Earlier Studies Based On Chromosome Countingmentioning

confidence: 97%

“…Populations of S. retusa s.l. in the Tatra Mountains (the western Carpathians) studied here had a leaf length and width twice as big as the average found in all populations of S. retusa s.s., including those from the eastern and southern Carpathians (Kosiński et al 2017) (Fig. 2).…”

Section: Comparison With Earlier Studies Based On Chromosome Countingmentioning

confidence: 99%

“…These taxa are different in terms of ecology: S. serpillifolia is calcicolous, S. kitaibeliana is acidophilous, while S. retusa s.s. has a broader, intermediate tolerance (Pawłowski 1956, Skvortsov 1999, Hörandl et al 2002. The morphological differences among them are mainly quantitative: leaves of S. serpillifolia are on average half the size of leaves of S. retusa s.s. (Rechinger 1992, Kosiński et al 2017, while leaves of S. kitaibeliana are approximately twice as long and broad as those of S. retusa s.s. (Supplementary material Appendix 1 Fig. A1) (Dostál 1989, Rechinger 1992, Kosiński et al 2017.…”

Section: Introductionmentioning

confidence: 99%

“…The morphological differences among them are mainly quantitative: leaves of S. serpillifolia are on average half the size of leaves of S. retusa s.s. (Rechinger 1992, Kosiński et al 2017, while leaves of S. kitaibeliana are approximately twice as long and broad as those of S. retusa s.s. (Supplementary material Appendix 1 Fig. A1) (Dostál 1989, Rechinger 1992, Kosiński et al 2017. According to Skvortsov (1999), there are only two taxa in this group of willows: S. retusa and S. serpillifolia, while S. kitaibeliana is regarded by him as one of the synonyms of S. retusa because of its vague and mainly quantitative differences in morphology.…”

Section: Introductionmentioning

confidence: 99%

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DNA ploidy in Salix retusa agg. only partly in line with its morphology and taxonomy

Kosiński

Śliwińska

Hilpold

et al. 2019

Nordic Journal of Botany

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Salix retusa agg. encompasses small, prostrate willows occurring in the subalpine and alpine zones of European mountains. Karyological relationships among taxa in this group remain unclear. In this study, DNA ploidy was estimated using flow cytometry of silica‐dried specimens, covering the entire distribution area of the species. As a result, the presence of two main lineages was revealed: the exclusively diploid S. serpillifolia and the predominantly octoploid S. retusa s.l. Only at the western and eastern limits of the distributional range of the latter species different levels of DNA ploidy occurred: hexaploidy in the western Pyrenees, and up to decaploidy in the southern Carpathians. These results were compared with leaf morphology analyses presented in the work of Kosiński et al. (2017). In the western Pyrenean populations, the lower ploidy corresponded to smaller leaf sizes as compared to other populations of S. retusa s.l. The elevated ploidy in the southern Carpathian populations did not translate into bigger dimensions of plants in this area. However, the populations from the northern part of the Carpathian arc, distinguished by larger leaves and sometimes considered as a distinct taxon (S. kitaibeliana), consisted mainly of octoploid individuals. Thus, DNA ploidy estimations did not confirm the separate taxonomic status of S. kitaibeliana.

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Section: Introductionsupporting

confidence: 56%

Section: Comparison With Earlier Studies Based On Chromosome Countingmentioning

confidence: 97%

Section: Comparison With Earlier Studies Based On Chromosome Countingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

DNA ploidy in Salix retusa agg. only partly in line with its morphology and taxonomy

Kosiński

Śliwińska

Hilpold

et al. 2019

Nordic Journal of Botany

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Spatial genetic structure of the endemic alpine plant Salix serpillifolia: genetic swamping on nunataks due to secondary colonization?

et al. 2019

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Pleistocene climatic changes affected the current distribution and genetic structure of alpine plants. Some refugial areas for the high elevation species have been proposed in the Alps, but whether they could survive on nunataks, is still controversial. Here, the spatial genetic structure in Salix serpillifolia revealed by chloroplast (cpSSR) and nuclear (nSSR) microsatellites was compared with the MaxEnt-modelled geographic distributions under current and past (Last Glacial Maximum) climate conditions. Our results suggest that the genetic pattern of differentiation detected in S. serpillifolia may be explained by the existence of Pleistocene refugia, including nunataks. The geographical patterns of variation obtained from the chloroplast and nuclear markers were not fully congruent. The spatial genetic structure that was based on nSSRs was more homogenous, while the cpSSR-based pattern pointed at strong genetic structure along the Alps. Five populations from the Central Alps had a combination of local and unique cpSSR clusters and admixture of those occurring in the Western and Eastern Alps. These findings may indicate the local survival of small populations of S. serpillifolia that were subsequently populated by new colonists in the postglacial period.

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Inference of taxonomic relationships betweenRhododendron ferrugineumandR.myrtifolium(Ericaceae) from leaf and fruit morphologies

Lewandowska

Marcysiak

Gómez

et al. 2023

Botanical Journal of the Linnean Society

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Rhododendron myrtifolium and R. ferrugineum are small, shrubby plant species that are morphologically similar to each other. They both grow on siliceous substrates in the subalpine belt of European mountains. In the present study, leaves and capsules from 11 populations of R. myrtifolium from the Carpathians were compared with those from 13 populations of R. ferrugineum from the Alps, Pyrenees and Sudetes. Fourteen leaf characteristics and 12 capsule characteristics of were analysed using ANOVA, discrimination analysis, principal component analysis and cluster analysis with agglomeration and the K-means method. All of the tested characteristics differed significantly between species, with the highest level of discrimination from the measured leaf traits. Less discriminatory were the proportions of the measured leaf features. According to the analyses, the populations of the two species were clearly separated, but individuals were partially intermixed. The similarities of the species may indicate a late divergence event, probably no earlier than the Pliocene. During the glacial cycles of the Pleistocene, populations of the two species may have mixed again. This may explain the presence of single individuals with R. myrtifolium morphology in some alpine R. ferrugineum populations and vice versa. The two species can be treated as another example of Carpathian–Alpine vicariance.

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Taxonomic differentiation of Salix retusa agg. (Salicaceae) based on leaf characteristics

Cited by 7 publications

References 9 publications

DNA ploidy in Salix retusa agg. only partly in line with its morphology and taxonomy

DNA ploidy in Salix retusa agg. only partly in line with its morphology and taxonomy

Spatial genetic structure of the endemic alpine plant Salix serpillifolia: genetic swamping on nunataks due to secondary colonization?

Inference of taxonomic relationships betweenRhododendron ferrugineumandR.myrtifolium(Ericaceae) from leaf and fruit morphologies

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