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Measuring Caenorhabditis elegans Life Span on Solid Media
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Seed life span and food security.

Louise Colville1, Hugh W Pritchard1

  • 1Department of Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Wellcome Trust Millennium Building, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK.

The New Phytologist
|June 22, 2019
PubMed
Summary
This summary is machine-generated.

Seed life span distribution is right-skewed across diverse storage conditions for crop and wild species. Most seeds have shorter life spans than the maximum recorded, impacting conservation and agriculture.

Keywords:
P50accelerated ageingex situ conservationlongevityseed bankseed life span

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Area of Science:

  • Botany and Agricultural Science
  • Ecology
  • Evolutionary Biology

Background:

  • Seed life span is a critical functional trait for agriculture, conservation, and soil seed banks.
  • Limited understanding exists regarding the inter-specific distribution of seed longevity compared to vertebrates and adult plants.

Purpose of the Study:

  • To analyze the distribution of orthodox seed life span across various storage conditions.
  • To compare seed longevity in crop versus wild species.

Main Methods:

  • Data collected from five storage conditions: soil seed bank, accelerated aging (high temp/humidity), temperate open storage, refrigerator, and freezer.
  • Analysis of seed life span distributions, including maximum in situ life span and ex situ half-lives (P50s).

Main Results:

  • The distribution of orthodox seed life span is right-skewed across all tested storage conditions.
  • For both in situ and ex situ data, over 50% of species exhibited life spans less than or equal to 20% of the longest recorded durations.

Conclusions:

  • The right-skewed distribution of seed life span has significant implications for managing gene bank collections.
  • Findings inform future research on the evolution of seed traits and seed persistence strategies.