Variation in Hsp70 levels after cold shock: Signs of evolutionary responses to thermal selection among Leptinotarsa decemlineata populations

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dc.contributor.author Lyytinen, Anne
dc.contributor.author Mappes, Johanna
dc.contributor.author Lindström, Leena
dc.date.accessioned 2012-08-21T10:51:09Z
dc.date.available 2012-08-21T10:51:09Z
dc.date.issued 2012
dc.identifier.citation Lyytinen A, Mappes J, Lindström L (2012) Variation in Hsp70 Levels after Cold Shock: Signs of Evolutionary Responses to Thermal Selection among Leptinotarsa decemlineata Populations. PLoS ONE 7(2): e31446. doi:10.1371/journal.pone.0031446
dc.identifier.issn 1932-6203
dc.identifier.uri http://hdl.handle.net/123456789/38343
dc.description.abstract Individuals of widely spread species are expected to show local adaption in temperature tolerance as they encounter a range of thermal conditions. We tracked thermal adaptations of the Colorado potato beetle (Leptinotarsa decemlineata) that invaded Europe within the last 100 years. It has occupied various conditions although, like the majority of invasive species, it lost a measurable amount of neutral genetic variation due to bottleneck effect when it invaded Europe. We exposed diapausing beetles originated from three different latitudes (54°N, 59°N, 60°N) to cold shock (−5°C, 1.5 hrs) in order to test if beetles from the northern populations express differential levels of cold-induced and constitutive Hsp70 compared to the beetles from milder temperature regime. The level of cold-induced Hsp70 was lowest in the northernmost beetle populations while the level of constitutive Hsp70 did not differ with the population. Moreover, the southernmost beetles were more plastic in their response to cold shock than the northernmost beetles. These results suggest that physiological adaptation, like the synthesis of Hsp70, can evolve very quickly. fi
dc.language.iso eng
dc.publisher Public Library of Science
dc.relation.ispartofseries PLoS ONE
dc.rights © 2012 Lyytinen et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.subject.other hsp fi
dc.subject.other invaasio fi
dc.subject.other koloradonkuoriainen fi
dc.subject.other lämpötila fi
dc.title Variation in Hsp70 levels after cold shock: Signs of evolutionary responses to thermal selection among Leptinotarsa decemlineata populations
dc.type Article en
dc.identifier.urn URN:NBN:fi:jyu-201208212212
dc.subject.kota 118
dc.contributor.laitos Bio- ja ympäristötieteiden laitos fi
dc.contributor.laitos The Department of Biological and Environmental Science en
dc.type.uri http://purl.org/eprint/type/JournalArticle
dc.identifier.doi doi:10.1371/journal.pone.0031446
dc.description.version Publisher's PDF
eprint.status http://purl.org/eprint/type/status/PeerReviewed

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