Cited by 2,270Heat shock proteins researchEvolution and Genetic DynamicsMorphological variations and asymmetry

Hsp90 as a capacitor for morphological evolution

Rutherford, Suzanne L., Lindquist, Susan·1998·Nature

Abstract

The heat-shock protein Hsp90 supports diverse but specific signal transducers and lies at the interface of several developmental pathways. We report here that when Drosophila Hsp90 is mutant or pharmacologically impaired, phenotypic variation affecting nearly any adult structure is produced, with specific variants depending on the genetic background and occurring both in laboratory strains and in wild populations. Multiple, previously silent, genetic determinants produced these variants and, when enriched by selection, they rapidly became independent of the Hsp90 mutation. Therefore, widespread variation affecting morphogenic pathways exists in nature, but is usually silent; Hsp90 buffers this variation, allowing it to accumulate under neutral conditions. When Hsp90 buffering is compromised, for example by temperature, cryptic variants are expressed and selection can lead to the continued expression of these traits, even when Hsp90 function is restored. This provides a plausible mechanism for promoting evolutionary change in otherwise entrenched developmental processes.

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Crossref · 10.1038/24550

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Authors
Rutherford, S. L., & Lindquist, S.
Affiliations
Howard Hughes Medical Institute (US)
Venue
Nature
Published
1998-11
Volume
396
Issue
6709
Pages
336-342
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1554180547
Cited by
2,270
References
38
Citations by year
2026: 45 · 2025: 57 · 2024: 53 · 2023: 58 · 2022: 60 · 2021: 54 · 2020: 56 · 2019: 86 · 2018: 95 · 2017: 77 · 2016: 84 · 2015: 93 · 2014: 104 · 2013: 108 · 2012: 93
FWCI
18.89
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Physical Sciences › Mathematics › Geometry and Topology › Morphological variations and asymmetry
Keywords
HSP90, morphological evolution, cryptic genetic variation, Drosophila, developmental pathways, signal transduction, genetic background effects, temperature effects, morphological variation
MeSH terms
Animals, Drosophila, Heat-Shock Proteins, Models, Genetic, Mutation, Phenotype, Temperature, Genetic Variation, HSP90 Heat-Shock Proteins, Directed Molecular Evolution, Drosophila Proteins

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