Silvia Busoms
Salinity is an agent of divergent selection driving local adaptation of arabidopsis to coastal habitats
Busoms, Silvia; Teres, Joana; Huang, Xin Yuan; Bomblies, Kirsten; Danku, John; Douglas, Alex; Weigel, Detlef; Poschenrieder, Charlotte; Salt, David E.
Authors
Joana Teres
Xin Yuan Huang
Kirsten Bomblies
John Danku
Alex Douglas
Detlef Weigel
Charlotte Poschenrieder
David E. Salt
Abstract
© 2015 American Society of Plant Biologists. All rights reserved. Understanding the molecular mechanism of adaptive evolution in plants provides insights into the selective forces driving adaptation and the genetic basis of adaptive traits with agricultural value. The genomic resources available for Arabidopsis (Arabidopsis thaliana) make it well suited to the rapid molecular dissection of adaptive processes. Although numerous potentially adaptive loci have been identified in Arabidopsis, the consequences of divergent selection and migration (both important aspects of the process of local adaptation) for Arabidopsis are not well understood. Here, we use a multiyear field-based reciprocal transplant experiment to detect local populations of Arabidopsis composed of multiple small stands of plants (demes) that are locally adapted to the coast and adjacent inland habitats in northeastern Spain. We identify fitness tradeoffs between plants from these different habitats when grown together in inland and coastal common gardens and also, under controlled conditions in soil excavated from coastal and inland sites. Plants from the coastal habitat also outperform those from inland when grown under high salinity, indicating local adaptation to soil salinity. Sodium can be toxic to plants, and we find its concentration to be elevated in soil and plants sampled at the coast. We conclude that the local adaptation that we observe between adjacent coastal and inland populations is caused by ongoing divergent selection driven by the differential salinity between coastal and inland soils.
Citation
Busoms, S., Teres, J., Huang, X. Y., Bomblies, K., Danku, J., Douglas, A., …Salt, D. E. (2015). Salinity is an agent of divergent selection driving local adaptation of arabidopsis to coastal habitats. Plant Physiology, 168(3), 915-929. https://doi.org/10.1104/pp.15.00427
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 1, 2015 |
Online Publication Date | Jun 1, 2015 |
Publication Date | Jul 6, 2015 |
Deposit Date | Jan 26, 2017 |
Publicly Available Date | Jan 26, 2017 |
Journal | Plant Physiology |
Print ISSN | 0032-0889 |
Electronic ISSN | 1532-2548 |
Publisher | American Society of Plant Biologists |
Peer Reviewed | Peer Reviewed |
Volume | 168 |
Issue | 3 |
Pages | 915-929 |
DOI | https://doi.org/10.1104/pp.15.00427 |
Public URL | https://nottingham-repository.worktribe.com/output/750397 |
Publisher URL | http://www.plantphysiol.org/content/168/3/915 |
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