10.6084/m9.figshare.12130962.v1
Anna Bazzicalupo
Anna
Bazzicalupo
Yi-Hong Ke
Yi-Hong
Ke
Joske Ruytinx
Joske
Ruytinx
Laura Coninx
Laura
Coninx
Jan V. Colpaert
Jan
V. Colpaert
Nhu Nguyen
Nhu
Nguyen
Rytas Vilgalys
Rytas
Vilgalys
Sara Branco
Sara
Branco
Fungal incipient local adaptation through allelic and copy-number variation
TAGC 2020
2020
Polygenic adapation
Population genomics
Gene copy number variation
Heavy Metal Polluted Soil Industrial areas
Fungi
Suillus luteus
Evolutionary Biology
Mycology
Population, Ecological and Evolutionary Genetics
2020-04-20 23:50:34
Poster
https://tagc2020.figshare.com/articles/poster/Fungal_incipient_local_adaptation_through_allelic_and_copy-number_variation/12130962
Human-altered environments can shape the evolution of organisms. Fungi are no exception,<br>though little is known about how they withstand anthropogenic pollution. Here, we document<br>incipient polygenic local adaptation in the mycorrhizal fungus <i>Suillus luteus</i> driven by recent soil<br>heavy metal contamination. Genome scans across individuals from recently polluted and nearby<br>unpolluted soils in Belgium revealed no evidence of population structure but detected allelic<br>divergence and gene copy number variation in genes involved in metal exclusion, storage,<br>immobilization, and reactive oxygen species detoxification. Standing genetic variation included<br>multiple alleles of small effects contributing to heavy metal tolerance, suggesting the existence<br>of different strategies to withstand contamination. These variants were shared across the whole<br>population but under selection in isolates exposed to pollution. Together, our results point to <i>S.<br>luteus</i> undergoing the initial steps of adaptive divergence and contribute to understanding the<br>processes underlying local adaptation under strong environmental selection.