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dc.contributor.author
Sailer, Christian
dc.contributor.author
Hebberecht, Laura
dc.contributor.author
Preite, Veronica
dc.contributor.author
Syllwasschy, Lara
dc.contributor.author
Krämer, Ute
dc.contributor.author
Widmer, Alex
dc.contributor.author
Yant, Levi
dc.date.accessioned
2019-12-16T13:22:55Z
dc.date.available
2019-12-13T15:15:03Z
dc.date.available
2019-12-16T13:22:55Z
dc.date.issued
2019-08-24
dc.identifier.uri
http://hdl.handle.net/20.500.11850/385625
dc.description.abstract
Metalliferous soils are harsh environments for plants as a result of their low levels of macronutrients and richness in trace metal elements (TME; e.g. Cd, Pb, Zn). Plant survival under these conditions requires soil-specific adaptations. Arabidopsis arenosa, a relative of A. thaliana, is an obligate outcrosser that occurs on both metalliferous and non-metalliferous soils. We are interested in adaptive differences between populations from metalliferous (M) and non-metalliferous (NM) sites, from a genomic and a functional perspective. From natural M and NM populations, we collected leaves, soil and seeds of individual plants, determined leaf and soil TME content and performed genomic divergence scans and environmental association analyses. In a greenhouse reciprocal transplant experiment, we tested for local adaptation and differences in gene transcription (RNAseq). Further, to perform a bulked segregant analysis, we created a segregating F2 population by crossing M and NM individuals from one soil contrast. Here, we demonstrate that M populations are adapted to metalliferous soils and that metalliferous soils exert a strong selection pressure manifesting in differing survival rates of M and NM plants on metalliferous soil. We present how we identify candidate loci underlying adaptive differences between M and NM populations, by integrating population genomics (genome scans, association analyses), quantitative genetics (bulked segregant analysis, RNAseq) and in the near future molecular biology (cloning of alleles, characterisation of knock-out mutants). To date, our approach identified well characterised metal-adaptation genes (e.g. HMA4, MTP1) next to a majority of undescribed and (so far) non-metal related candidate loci.
en_US
dc.language.iso
en
en_US
dc.publisher
ESEB 2019
en_US
dc.title
Adaptation to high soil trace metal element concentrations in Arabidopsis arenosa
en_US
dc.type
Other Conference Item
ethz.book.title
Online Program and Abstracts: 17th Congress of the European Society for Evolutionary Biology (ESEB 2019)
en_US
ethz.pages.start
S13.O39
en_US
ethz.event
17th Congress of the European Society for Evolutionary Biology (ESEB 2019)
en_US
ethz.event.location
Turku, Finland
en_US
ethz.event.date
August 19-24, 2019
en_US
ethz.notes
Conference lecture on August 24, 2019.
en_US
ethz.grant
The functional basis of edaphic adaptation to high metal concentrations
en_US
ethz.publication.place
Turku
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::03706 - Widmer, Alexander / Widmer, Alexander
en_US
ethz.identifier.url
https://app.oxfordabstracts.com/events/653/program-app/submission/122303
ethz.grant.agreementno
171523
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
Rückkehr CH Advanced Postdoc.Mobility
ethz.date.deposited
2019-12-13T15:15:13Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2019-12-16T13:23:06Z
ethz.rosetta.lastUpdated
2021-02-15T07:05:34Z
ethz.rosetta.versionExported
true
ethz.COinS
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