Convergent evolution in and on calamine metalliferous soils
| Autor: | Preite, Veronica, Sailer, Christian, Syllwasschy, Lara, Bray, Sian, Ahmadi, Hassan, Krämer, Ute, Yant, Levi |
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| Rok vydání: | 2019 |
| Předmět: |
2. Zero hunger
0106 biological sciences 0303 health sciences biology Genomics 15. Life on land biology.organism_classification 01 natural sciences General Biochemistry Genetics and Molecular Biology Arabidopsis arenosa 03 medical and health sciences Evolutionary biology Convergent evolution Calamine (mineral) Adaptation General Agricultural and Biological Sciences Selective sweep Gene 030304 developmental biology 010606 plant biology & botany Local adaptation |
| DOI: | 10.1098/rstb.2018.0243 |
| Popis: | It is a plausible hypothesis that parallel adaptation events to the same environmental challenge should result in genetic changes of similar or identical effects, depending on the underlying fitness landscapes. However, systematic testing of this is scarce. Here we examine this hypothesis in two closely related plant species,Arabidopsis halleriandArabidopsis arenosa, which co-occur at two calamine metalliferous (M) sites harbouring toxic levels of the heavy metals zinc and cadmium. We conduct individual genome resequencing alongside soil elemental analysis for 64 plants from eight populations on M and non-metalliferous (NM) soils, and identify genomic footprints of selection and local adaptation. Selective sweep and environmental association analyses indicate a modest degree of gene as well as functional network convergence, whereby the proximal molecular factors mediating this convergence mostly differ between site pairs and species. Notably, we observe repeated selection on identical single nucleotide polymorphisms in severalA. hallerigenes at two independently colonized M sites. Our data suggest that species-specific metal handling and other biological features could explain a low degree of convergence between species. The parallel establishment of plant populations on calamine M soils involves convergent evolution, which will probably be more pervasive across sites purposely chosen for maximal similarity in soil composition.This article is part of the theme issue ‘Convergent evolution in the genomics era: new insights and directions’. |
| Databáze: | OpenAIRE |
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