Population genetics of lichen-forming fungi – a review

Werth, Silke

doi:10.1017/s0024282910000125

Cited by 53 publications

(64 citation statements)

References 123 publications

(246 reference statements)

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“…One of the most commonly used sequences in lichen population genetics is the ribosomal DNA (rDNA) marker, mainly the internal transcribed spacer (ITS) [6]. Only the ITS region of the mycobiont was found to be sufficient to assess the high genetic population variability.…”

Section: Discussionmentioning

confidence: 99%

“…Bearing in mind that only one kind of rDNA marker was analysed, such a degree of genetic variation is surprisingly high. It is difficult to compare our results with other studies on genetic structure, as different markers have been used, various spatial scales have been considered, and different taxonomic groups have been included (see [6]). Studies of genetic variation at the population level in the fungal component of Cladonia representatives have primarily been conducted using restriction site patterns of the nuclear ribosomal small subunit RNA gene (nrSSU) [45][46][47].…”

Section: Discussionmentioning

confidence: 99%

“…Contrastingly, studies at the population level are still far less common (e.g. [5]; see also [6]). Some recent molecular studies have demonstrated intraspecific variation in certain widespread lichens (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, there is still much to learn about local genetic diversity in lichen populations and their response to anthropogenic changes. Moreover, the genetic structure of populations may hold information essential for understanding population dynamics [6]. Genetic structure results from four processes: mutation, drift, selection, and gene flow [9].…”

Section: Introductionmentioning

confidence: 99%

“…geographical isolation, historical distribution, and mutagenic stress, as well as characteristics of the population itself, such as size, reproduction mode of individuals, number and type of propagules, and mating type (e.g. [6,7,10]). Even though data on the genetic relatedness of particular taxa/specimens of the genus Cladonia have been successfully used to resolve taxonomic problems (e.g.…”

Section: Introductionmentioning

confidence: 99%

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High intraspecific genetic and morphological variation in the pioneer lichen Cladonia rei colonising slag dumps

et al. 2014

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This study investigates the genetic and morphological variability of the lichen Cladonia rei inhabiting strongly contaminated postsmelting slag dumps in southern Poland. Altogether, 27 C. rei samples were analysed, including 17 from a single population in one dump. The phylogenetic analysis includes samples of C. rei, outgroup species, and external sequences of Cladonia section representatives from GenBank. Comparative analysis of the internal transcribed spacer (ITS) rDNA sequences revealed the presence of 19 C. rei haplotypes overall, including several of the most frequent, of which 11 are represented by single individuals only. As many as 12 haplotypes were recorded within a single population. Three strongly supported monophyletic clades comprised of specimens from different geographical regions were recovered. Morphometric analysis showed great phenotypic variability within particular clades. Apart from a full range of previously known morphological forms of the species, an additional specific morphotype was recognised in the dumps; however, its representatives do not create a monophyletic group. High genetic variability within a single population suggests that C. rei has a great potential for colonising anthropogenic habitats. This attribute emphasises the role of this lichen as an essential pioneer in the early stages of natural regeneration of such sites.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High intraspecific genetic and morphological variation in the pioneer lichen Cladonia rei colonising slag dumps

et al. 2014

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Population genomics of a reindeer lichen species from North American lichen woodlands

Alonso-García

Grewe

Payette

et al. 2021

American J of Botany

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Lichens are one of the main structural components of plant communities in the North American boreal biome. They play a pivotal role in lichen woodlands, a large ecosystem situated north of the closed-crown forest zone, and south of the forest-tundra zone. In Eastern Canada (Quebec), there is a remnant LW found 500 km south of its usual distribution range, in the Parc National des Grands-Jardins, originated mainly because of wildfires. We inferred the origin of the lichen Cladonia stellaris from this LW and assessed its genetic diversity in a postfire succession. METHODS: We genotyped 122 individuals collected across a latitudinal gradient in Quebec. Using the software Stacks, we compared four different approaches of locus selection and single-nucleotide polymorphism calling. We identified the best fitting approach to investigate population structure and estimate genetic diversity of C. stellaris. RESULTS: Populations in southern Quebec are not genetically different from those of northern LWs. The species consists of at least four phylogenetic lineages with elevated levels of genetic diversity and low co-ancestry. In Parc National des Grands-Jardins, we reported high values of genetic diversity not related with time since fire disturbance and low genetic differentiation among populations with different fire histories. CONCLUSIONS: This first population genomic study of C. stellaris is an important step forward to understand the origin and biogeographic patterns of lichen woodlands in North America. Our findings also contribute to the understanding of the effect of postfire succession on the genetic structure of the species.

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Phylogeographic analyses of an epiphytic foliose lichen show multiple dispersal events westward from the Hengduan Mountains of Yunnan into the Himalayas

Yang

Werth

Wang

et al. 2022

Ecology and Evolution

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Lobaria pindarensis is an endemic species of the Himalayas and the Hengduan Mountains. Little information is available on the phylogeography genetics and colonization history of this species or how its distribution patterns changed in response to the orographic history of the Himalayas and Hengduan Mountains. Based on samples covering a major part of the species' distribution range, we used 443 newly generated sequences of nine loci for molecular coalescent analyses in order to reconstruct the evolutionary history of L. pindarensis, and to reconstruct the species' ancestral phylogeographic distributions using Bayesian binary MCMC analyses. The results suggest that current populations originated from the Yunnan region of the Hengduan Mountains in the middle Pliocene, and that the Himalayas of Bhutan were colonized by a lineage that diverged from Yunnan ca. 2.72 Ma. The analysis additionally indicates that the Nepal and Xizang areas of the Himalayas were colonized from Yunnan as well, and that there was later a second dispersal event from Yunnan to Bhutan. We conclude that the change in climate and habitat related to the continuous uplift of the Himalayas and the Hengduan Mountains in the late Pliocene and middle Pleistocene influenced the geographic distribution pattern of L. pindarensis.

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Population genetics of lichen-forming fungi – a review

Cited by 53 publications

References 123 publications

High intraspecific genetic and morphological variation in the pioneer lichen Cladonia rei colonising slag dumps

High intraspecific genetic and morphological variation in the pioneer lichen Cladonia rei colonising slag dumps

Population genomics of a reindeer lichen species from North American lichen woodlands

Phylogeographic analyses of an epiphytic foliose lichen show multiple dispersal events westward from the Hengduan Mountains of Yunnan into the Himalayas

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