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Heat shock proteins expression and survival at fluctuating high temperature in the larvae of two moth species, Helicoverpa armigera and Thaumetopoea pityocampa

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dc.contributor.authorBranco, Manuela
dc.contributor.authorEsquivel, Maria Da Gloria
dc.contributor.authorCortez, Miguel
dc.contributor.authorFigueiredo, Elisabete
dc.date.accessioned2019-06-27T14:42:12Z
dc.date.available2019-06-27T14:42:12Z
dc.date.issued2019
dc.description.abstractThermal stress is a critical factor when assessing responses of organisms and populations to global warming. Understanding responses to upper lethal temperature is critical to predict the effect of heat waves on populations. On the other hand, it is important to understand physiological traits allowing populations to adapt to changes in temperature. Here we compare survival to high temperatures of two moth species: a Mediterranean species Thaumetopoea pityocampa (Denis et Schiffermuller) and the broadly distributed Helicoverpa armigera (Hubner). Larvae were exposed to thermal stress, mimicking heat waves with daily maximum temperature (Tmax) up to 45 °C. Control groups were kept at 25 °C. The changes in two heat shock proteins HSP70 and HSP90 were further studied for the second and third larval stages of T. pityocampa and H. armigera, respectively. An increase in mortality was observed on T. pityocampa larvae for Tmax above 38 °C. On the contrary, larvae of H. armigera survived well up to 44 °C Tmax, but survival decreased abruptly at 45 °C Tmax. Thus, the two species differ by 6 °C on their upper threshold. For H. armigera HSP70 and HSP90 were both inducible by temperatures above 38 °C, steeply increasing with temperature which may account for superior adaptation to upper temperatures. In T. pityocampa HSP70 and HSP90 occurred constitutively in the control at 25 °C and did not increase with temperature. Results evidence major differences in HSP expression between species, which might account for differences in larval survival at the upper thermal limitspt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBulletin of Insectology 72 (1): 61-68, 2019pt_PT
dc.identifier.issneISSN 2283-0332
dc.identifier.urihttp://hdl.handle.net/10400.5/18079
dc.language.isoengpt_PT
dc.publisherDepartment of Agricultural and Food Sciences, Entomology, Alma Mater Studiorum Bologna Universitypt_PT
dc.subjectheat tolerancept_PT
dc.subjectheat shock proteins (HSP)pt_PT
dc.subjectglobal warmingpt_PT
dc.subjectthermal adaptationpt_PT
dc.subjectheat wavespt_PT
dc.titleHeat shock proteins expression and survival at fluctuating high temperature in the larvae of two moth species, Helicoverpa armigera and Thaumetopoea pityocampapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleBulletin of insectologypt_PT
person.familyNameBranco
person.familyNameEsquivel
person.familyNameFigueiredo
person.givenNameManuela
person.givenNameMaria da Gloria
person.givenNameElisabete
person.identifier124857
person.identifier.ciencia-id9A15-2124-A039
person.identifier.ciencia-idF01D-FD36-9B51
person.identifier.ciencia-idD217-1213-E402
person.identifier.orcid0000-0002-8140-1257
person.identifier.orcid0000-0003-1772-0015
person.identifier.orcid0000-0002-0795-4216
person.identifier.ridD-5274-2011
person.identifier.scopus-author-id7004477399
person.identifier.scopus-author-id7003768987
person.identifier.scopus-author-id15044208800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3b8cc910-0045-4627-995e-33dd0a61718a
relation.isAuthorOfPublication55a343b6-7db9-477d-abfb-252141c88c7e
relation.isAuthorOfPublication455e95e9-a413-47b5-a462-e1f78a6ca73d
relation.isAuthorOfPublication.latestForDiscovery455e95e9-a413-47b5-a462-e1f78a6ca73d

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