Range-wide genetic structure of Arabidopsis halleri (Brassicaceae): glacial persistence in multiple refugia and origin of the Northern Hemisphere disjunction

Šrámková, Gabriela; Záveská, Eliška; Kolář, Filip; Lučanová, Magdalena; Španiel, Stanislav; Marhold, Karol

doi:10.1093/botlinnean/box064

Cited by 27 publications

(28 citation statements)

References 77 publications

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“…This indicates that the availability of genomic variation preexisting in the species may be essential for (repeated) local adaptation and consequently also for predictability of evolution, a topic critical for pest and disease control as well as for evolutionary theory. Exclusively diploid A. halleri species colonized high elevations in Făgăraș (hFG) in Romania and in South-Eastern Alps in Austria (hNT) 61 .…”

Section: Discussionmentioning

confidence: 99%

Genomic basis of parallel adaptation varies with divergence inArabidopsisand its relatives

Bohutínská

Vlček

Yair

et al. 2020

Preprint

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Understanding the predictability of evolutionary change is of major importance in biology.Parallel adaptation provides unique insights through replicated natural experiments, yet mechanisms governing the ample variation in genomic parallelism remain unknown. Here, we investigate them using multi-scale genomic analyses of parallel evolution across populations, species and genera. By resequencing genomes of seven independent alpine lineages from two Arabidopsis species, we found that the degree of gene reuse decreases with increasing divergence between lineages. This relationship is well predicted by decreasing frequency of allele reuse, suggesting that availability of preexisting genetic variation is the prime mechanism. A meta-analysis demonstrated that the relationship further continues within the Brassicaceae family. Thus, we found empirical support for a longstanding hypothesis that the genetic basis of adaptive evolution is more predictable in closely related lineages while it becomes more contingent over larger evolutionary distances.

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Section: Discussionmentioning

confidence: 99%

Genomic basis of parallel adaptation varies with divergence inArabidopsisand its relatives

Bohutínská

Vlček

Yair

et al. 2020

Preprint

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“…We investigated fourteen M and NM sampling locations from southern Poland where plants were reported to be highly variable in terms of Zn hyperaccumulation abilities (Kostecka, ). According to phylogeographic studies, these accessions should belong to a single genetic unit (Pauwels et al., ; Šrámková‐Fuxová et al., ). Quantitative variation in Zn hyperaccumulation was explored in combination with population genetic approaches.…”

Section: Introductionmentioning

confidence: 99%

“…Genetic isolation was subsequently maintained in western Europe, whereas admixture was detected in the Carpathians. The genetic structure described by Pauwels et al (2012) was recently refined, in particular in the Carpathians (Šrámková-Fuxová et al, 2017;Wasowicz et al, 2016). Current phenotypic variation among accessions from vicariant phylogeographic units may thus represent independent local adaptation events from differentiated gene pools.…”

Section: Introductionmentioning

confidence: 99%

Evolutionary dynamics of quantitative variation in an adaptive trait at the regional scale: The case of zinc hyperaccumulation in Arabidopsis halleri

et al. 2018

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Metal hyperaccumulation in plants is an ecological trait whose biological significance remains debated, in particular because the selective pressures that govern its evolutionary dynamics are complex. One of the possible causes of quantitative variation in hyperaccumulation may be local adaptation to metalliferous soils. Here, we explored the population genetic structure of Arabidopsis halleri at fourteen metalliferous and nonmetalliferous sampling sites in southern Poland. The results were integrated with a quantitative assessment of variation in zinc hyperaccumulation to trace local adaptation. We identified a clear hierarchical structure with two distinct genetic groups at the upper level of clustering. Interestingly, these groups corresponded to different geographic subregions, rather than to ecological types (i.e., metallicolous vs. nonmetallicolous). Also, approximate Bayesian computation analyses suggested that the current distribution of A. halleri in southern Poland could be relictual as a result of habitat fragmentation caused by climatic shifts during the Holocene, rather than due to recent colonization of industrially polluted sites. In addition, we find evidence that some nonmetallicolous lowland populations may have actually derived from metallicolous populations. Meanwhile, the distribution of quantitative variation in zinc hyperaccumulation did separate metallicolous and nonmetallicolous accessions, indicating more recent adaptive evolution and diversifying selection between metalliferous and nonmetalliferous habitats. This suggests that zinc hyperaccumulation evolves both ways-towards higher levels at nonmetalliferous sites and lower levels at metalliferous sites. Our results open a new perspective on possible evolutionary relationships between A. halleri edaphic types that may inspire future genetic studies of quantitative variation in metal hyperaccumulation.

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“…A similar morphological pattern related to elevation is apparent in the genus Alyssum , where alpine species (including A. spruneri from Mt Smolikas) have significantly larger flowers and shorter stems (Španiel et al, ); however, the genetic basis and stability of these traits outside the alpine environment are still unexplored in Alyssum . In studies of Arabidopsis halleri (L.) O'Kane & Al‐Shehbaz (Šrámková‐Fuxová et al, ), Heliosperma pusillum (Waldst. & Kit.)…”

Section: Discussionmentioning

confidence: 99%

Polyphyletic Alyssum cuneifolium (Brassicaceae) revisited: Morphological and genome size differentiation of recently recognized allopatric taxa

Španiel

Marhold

Zozomová‐Lihová

2018

J of Sytematics Evolution

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Alyssum cuneifolium has been recognized as a perennial alpine species growing in five isolated European mountain ranges: the Pyrenees, Western Alps, Apennines, Pirin Mts and Mt Smolikas. Recent molecular systematic studies revealed that the disjunct populations from distant mountains are not closely related and belong to five independent species: A. cacuminum (Spain, Pyrenees), A. cuneifolium (Italy, Apennines), A. flexicaule (France, Western Alps), A. pirinicum (Bulgaria, Pirin Mts), and A. spruneri (Greece, Mt Smolikas). The present study brings the thorough morphometric analysis of the segregated taxa. We found minor morphological differences between them. Whereas A. pirinicum can be clearly distinguished, the other taxa are recognizable only at the level of population means of investigated characters. The morphological similarity of these distantly related species is obviously the result of adaptation to similar high‐alpine scree habitats. It is not clear, however, whether this adaptation is environmentally controlled or whether it is also genetically fixed and whether it reflects parallel evolution towards similar morphotypes. The observed morphological patterns and their assumed correlation with environmental factors are discussed using examples from other Alyssum taxa. Three different ploidy levels have been reported for the species under study. In the present article, we examine variation in relative nuclear genome size. The Alpine and Pyrenean species have larger relative monoploid genome sizes than the Apennine and Balkan ones, probably reflecting the evolutionary history of the group. A nomenclatural account of the study species is presented, and lectotypes of A. cuneifolium and of two other names are selected.

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Range-wide genetic structure of Arabidopsis halleri (Brassicaceae): glacial persistence in multiple refugia and origin of the Northern Hemisphere disjunction

Cited by 27 publications

References 77 publications

Genomic basis of parallel adaptation varies with divergence inArabidopsisand its relatives

Genomic basis of parallel adaptation varies with divergence inArabidopsisand its relatives

Evolutionary dynamics of quantitative variation in an adaptive trait at the regional scale: The case of zinc hyperaccumulation in Arabidopsis halleri

Polyphyletic Alyssum cuneifolium (Brassicaceae) revisited: Morphological and genome size differentiation of recently recognized allopatric taxa

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