Heat-induced hormesis in longevity of two sibling Drosophila species

Previous work showed that mild-heat stress induces longevity hormesis in a model organism, D. melanogaster. Here we compared the possible heat-induced hormesis in longevity of other species of Drosophila, D. buzzatii and its sibling species D. koepferae, in a single-sex environment. Possible correla...

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Autores principales:	Scannapieco, Alejandra Carla, Norry, Fabian Marcelo
Publicado:	2007
Materias:	Age-specific mortality rate Heat-knockdown resistance Heat-shock stress Hormesis Hsp70 expression Inter-specific variation Senescence rate heat shock protein 70 animal experiment article controlled study correlation analysis demography Drosophila Drosophila melanogaster female heat shock heat stress heat tolerance hormesis lifespan longevity male mortality nonhuman priority journal protein expression senescence sibling species difference temperature temperature sensitivity Aging Animals Drosophila Proteins Female Gene Expression Regulation Heat Stress Disorders HSP70 Heat-Shock Proteins Longevity Male Sex Characteristics Species Specificity Survival Analysis
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13895729_v8_n3_p315_Scannapieco http://hdl.handle.net/20.500.12110/paper_13895729_v8_n3_p315_Scannapieco
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_13895729_v8_n3_p315_Scannapieco
record_format	dspace
spelling	paper:paper_13895729_v8_n3_p315_Scannapieco2023-06-08T16:13:11Z Heat-induced hormesis in longevity of two sibling Drosophila species Scannapieco, Alejandra Carla Norry, Fabian Marcelo Age-specific mortality rate Heat-knockdown resistance Heat-shock stress Hormesis Hsp70 expression Inter-specific variation Senescence rate heat shock protein 70 animal experiment article controlled study correlation analysis demography Drosophila Drosophila melanogaster female heat shock heat stress heat tolerance hormesis lifespan longevity male mortality nonhuman priority journal protein expression senescence sibling species difference temperature temperature sensitivity Aging Animals Drosophila Drosophila Proteins Female Gene Expression Regulation Heat Stress Disorders HSP70 Heat-Shock Proteins Longevity Male Sex Characteristics Species Specificity Survival Analysis Previous work showed that mild-heat stress induces longevity hormesis in a model organism, D. melanogaster. Here we compared the possible heat-induced hormesis in longevity of other species of Drosophila, D. buzzatii and its sibling species D. koepferae, in a single-sex environment. Possible correlations between longevity and heat-stress resistance were also tested by measuring longevity, heat-knockdown resistance and the heat-induced Hsp70 expression for each species in a common environment. D. buzzatii was longer lived than D. koepferae at benign temperature. Knockdown resistance to heat stress was positively correlated to longevity within species. However, the shorter-lived species was more resistant to knockdown by heat stress than the longer-lived species. The heat-induced Hsp70 expression was similar between species. A heat-shock treatment (37°C for 1 h at 4 days of age) extended mean longevity in the longer lived species but not in the shorter lived species. In D. koepferae, the demographic rate of senescence decreased but the baseline mortality rate increased by heat-shock, resulting in no extension of mean longevity. Sympatric populations of closely related species can be differentially sensitive to temperature and exhibit different patterns of 37°C-induced hormesis in demographic senescence and longevity. The results also show that positive correlations between stress resistance and life span within species can shift in sign across closely related species. Finally, this study shows that heat-induced hormesis in longevity can be found across different Drosophila species, as hormetic effects are not limited to the previously studied D. melanogaster. © Springer Science+Business Media, Inc. 2006. Fil:Scannapieco, A.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Norry, F.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13895729_v8_n3_p315_Scannapieco http://hdl.handle.net/20.500.12110/paper_13895729_v8_n3_p315_Scannapieco
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Age-specific mortality rate Heat-knockdown resistance Heat-shock stress Hormesis Hsp70 expression Inter-specific variation Senescence rate heat shock protein 70 animal experiment article controlled study correlation analysis demography Drosophila Drosophila melanogaster female heat shock heat stress heat tolerance hormesis lifespan longevity male mortality nonhuman priority journal protein expression senescence sibling species difference temperature temperature sensitivity Aging Animals Drosophila Drosophila Proteins Female Gene Expression Regulation Heat Stress Disorders HSP70 Heat-Shock Proteins Longevity Male Sex Characteristics Species Specificity Survival Analysis
spellingShingle	Age-specific mortality rate Heat-knockdown resistance Heat-shock stress Hormesis Hsp70 expression Inter-specific variation Senescence rate heat shock protein 70 animal experiment article controlled study correlation analysis demography Drosophila Drosophila melanogaster female heat shock heat stress heat tolerance hormesis lifespan longevity male mortality nonhuman priority journal protein expression senescence sibling species difference temperature temperature sensitivity Aging Animals Drosophila Drosophila Proteins Female Gene Expression Regulation Heat Stress Disorders HSP70 Heat-Shock Proteins Longevity Male Sex Characteristics Species Specificity Survival Analysis Scannapieco, Alejandra Carla Norry, Fabian Marcelo Heat-induced hormesis in longevity of two sibling Drosophila species
topic_facet	Age-specific mortality rate Heat-knockdown resistance Heat-shock stress Hormesis Hsp70 expression Inter-specific variation Senescence rate heat shock protein 70 animal experiment article controlled study correlation analysis demography Drosophila Drosophila melanogaster female heat shock heat stress heat tolerance hormesis lifespan longevity male mortality nonhuman priority journal protein expression senescence sibling species difference temperature temperature sensitivity Aging Animals Drosophila Drosophila Proteins Female Gene Expression Regulation Heat Stress Disorders HSP70 Heat-Shock Proteins Longevity Male Sex Characteristics Species Specificity Survival Analysis
description	Previous work showed that mild-heat stress induces longevity hormesis in a model organism, D. melanogaster. Here we compared the possible heat-induced hormesis in longevity of other species of Drosophila, D. buzzatii and its sibling species D. koepferae, in a single-sex environment. Possible correlations between longevity and heat-stress resistance were also tested by measuring longevity, heat-knockdown resistance and the heat-induced Hsp70 expression for each species in a common environment. D. buzzatii was longer lived than D. koepferae at benign temperature. Knockdown resistance to heat stress was positively correlated to longevity within species. However, the shorter-lived species was more resistant to knockdown by heat stress than the longer-lived species. The heat-induced Hsp70 expression was similar between species. A heat-shock treatment (37°C for 1 h at 4 days of age) extended mean longevity in the longer lived species but not in the shorter lived species. In D. koepferae, the demographic rate of senescence decreased but the baseline mortality rate increased by heat-shock, resulting in no extension of mean longevity. Sympatric populations of closely related species can be differentially sensitive to temperature and exhibit different patterns of 37°C-induced hormesis in demographic senescence and longevity. The results also show that positive correlations between stress resistance and life span within species can shift in sign across closely related species. Finally, this study shows that heat-induced hormesis in longevity can be found across different Drosophila species, as hormetic effects are not limited to the previously studied D. melanogaster. © Springer Science+Business Media, Inc. 2006.
author	Scannapieco, Alejandra Carla Norry, Fabian Marcelo
author_facet	Scannapieco, Alejandra Carla Norry, Fabian Marcelo
author_sort	Scannapieco, Alejandra Carla
title	Heat-induced hormesis in longevity of two sibling Drosophila species
title_short	Heat-induced hormesis in longevity of two sibling Drosophila species
title_full	Heat-induced hormesis in longevity of two sibling Drosophila species
title_fullStr	Heat-induced hormesis in longevity of two sibling Drosophila species
title_full_unstemmed	Heat-induced hormesis in longevity of two sibling Drosophila species
title_sort	heat-induced hormesis in longevity of two sibling drosophila species
publishDate	2007
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13895729_v8_n3_p315_Scannapieco http://hdl.handle.net/20.500.12110/paper_13895729_v8_n3_p315_Scannapieco
work_keys_str_mv	AT scannapiecoalejandracarla heatinducedhormesisinlongevityoftwosiblingdrosophilaspecies AT norryfabianmarcelo heatinducedhormesisinlongevityoftwosiblingdrosophilaspecies
_version_	1768542096902324224

Heat-induced hormesis in longevity of two sibling Drosophila species

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