Cited by 1,372Heat shock proteins researchEvolution and Genetic DynamicsMorphological variations and asymmetry

Hsp90 as a capacitor of phenotypic variation

Queitsch, Christine, Sangster, Todd A., Lindquist, Susan·2002·Nature

Abstract

Heat-shock protein 90 (Hsp90) chaperones the maturation of many regulatory proteins and, in the fruitfly Drosophila melanogaster, buffers genetic variation in morphogenetic pathways. Levels and patterns of genetic variation differ greatly between obligatorily outbreeding species such as fruitflies and self-fertilizing species such as the plant Arabidopsis thaliana. Also, plant development is more plastic, being coupled to environmental cues. Here we report that, in Arabidopsis accessions and recombinant inbred lines, reducing Hsp90 function produces an array of morphological phenotypes, which are dependent on underlying genetic variation. The strength and breadth of Hsp90's effects on the buffering and release of genetic variation suggests it may have an impact on evolutionary processes. We also show that Hsp90 influences morphogenetic responses to environmental cues and buffers normal development from destabilizing effects of stochastic processes. Manipulating Hsp90's buffering capacity offers a tool for harnessing cryptic genetic variation and for elucidating the interplay between genotypes, environments and stochastic events in the determination of phenotype.

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Crossref · 10.1038/nature749

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  • Hsp90 can buffer the effects of genetic or epigenetic variation, keeping it silent until released when the chaperone reservoir is compromised in response to stress.

    “First, Hsp90 can buffer the effects of genetic or epigenetic variation, keeping it silent until released when the chaperone reservoir is compromised in response to stress.”
  • Hsp90's role as a capacitor for variation has been observed in diverse eukaryotes including flies, plants, and fungi.

    “This role as a capacitor for variation has been observed in diverse eukaryotes including flies, plants, and fungi18,19,129-134.”

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Authors
Queitsch, C., Sangster, T. A., & Lindquist, S.
Affiliations
  • University of Chicago (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Lindquist, Susan
Venue
Nature
Published
2002-05-12
Volume
417
Issue
6889
Pages
618-624
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1992909271
Cited by
1,372
References
27
Citations by year
2026: 24 · 2025: 37 · 2024: 34 · 2023: 37 · 2022: 36 · 2021: 41 · 2020: 48 · 2019: 68 · 2018: 62 · 2017: 52 · 2016: 49 · 2015: 51 · 2014: 64 · 2013: 75 · 2012: 49
FWCI
24.63
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • University of Chicago
  • Arizona Biomedical Research Commission
  • National Institutes of Health
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, phenotypic variability, genetic buffering, Arabidopsis thaliana, Drosophila melanogaster, cryptic genetic variation, environmental plasticity, developmental noise, gene-environment interaction, molecular chaperones, evolutionary processes
MeSH terms
Crosses, Genetic, Darkness, Environment, Biological Evolution, Genetic Engineering, Genotype, Light, Phenotype, Stochastic Processes, Genetic Variation, Genes, Plant, Arabidopsis, HSP90 Heat-Shock Proteins, Arabidopsis Proteins, Plants, Genetically Modified

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