Lipid Thermal Fingerprints of Long-term Stored Seeds of Brassicaceae.

ABSTRACT: Thermal fingerprints for seeds of 20 crop wild relatives of Brassicaceae stored for 8 to 44 years at the Plant Germplasm Bank-Universidad Politécnica de Madrid and the Royal Botanic Gardens, Kew's Millennium Seed Bank-were generated using differential scanning calorimetry (DSC) and analyzed in relation to storage stability. Relatively poor storing oily seeds at -20 °C tended to have lipids with crystallization and melting transitions spread over a wide temperature range (c. 40 °C) that spanned the storage temperature, plus a melting end temperature of around 15 °C. We postulated that in dry storage, the variable longevity in Brassicaceae seeds could be associated with the presence of a metastable lipid phase at the temperature at which they are being stored. Consistent with that, when high

SUBMITTER: Mira S 

PROVIDER: S-EPMC6843794 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature