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Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
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Functional Amyloids Germinate in Plants.

Jaime Santos1, Salvador Ventura1

  • 1Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain; Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain.

Trends in Plant Science
|October 24, 2020
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Summary

Researchers discovered functional amyloids in plants, crucial for seed longevity. This finding confirms that amyloids are universally used by organisms for adaptation and survival.

Keywords:
functional amyloidsgarden peaplantsseed longevityseed storagevicilin

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Area of Science:

  • Biochemistry
  • Plant Biology
  • Molecular Biology

Background:

  • Amyloids, known from human disorders, have established biological roles across bacteria, archaea, fungi, and animals.
  • The functional significance of amyloids in the plant kingdom remained previously uncharacterized.

Purpose of the Study:

  • To investigate the presence and function of amyloids in plants.
  • To understand the role of plant amyloids in adaptation and survival mechanisms.

Main Methods:

  • Identification of amyloid structures within plant tissues.
  • Functional assays to determine the impact of amyloids on plant traits.

Main Results:

  • A functional amyloid was identified in plants for the first time.
  • This plant amyloid plays a critical role in enhancing seed longevity.

Conclusions:

  • Amyloids are universally exploited by diverse organisms, including plants, for adaptation.
  • The discovery of functional amyloids in plants expands our understanding of their widespread biological importance.