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A high proportion of beta-tocopherol in vitamin E is associated with poor seed longevity in rice produced under temperate conditions

  • Jae-Sung Lee (a1), Jieun Kwak (a2), Jun-Hyeon Cho (a2), Dmytro Chebotarov (a1), Mi-Ra Yoon (a2), Jeom-Sig Lee (a2), N. Ruaraidh Sackville Hamilton (a1) and Fiona R. Hay (a1) (a3)...

Abstract

Seeds of 15 diverse rice accessions, representing aus, indica, temperate japonica and tropical japonica subpopulations, were produced under temperate climate conditions in Korea and used for vitamin E analysis and seed storage experiments at 45°C and 10.9% seed moisture content. High γ-tocotrienol was significantly positively correlated with seed longevity. In addition, a high β-tocopherol proportion relative to δ-tocopherol was significantly negatively correlated with seed longevity. Using high-density single-nucleotide polymorphism marker data, DNA haplotype analysis showed clear allelic variations in the region of two S-adenosylmethionine synthetase genes: LOC_Os04g42095 and LOC_Os11g15410, which regulate the conversion of δ-tocopherol into β-tocopherol. Four indica accessions with rare and subpopulation-specific alleles showed a 2.3-fold lower β-/δ-tocopherol ratio compared with accessions from other subpopulations.

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Copyright

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

Corresponding author

*Corresponding author. E-mail: fiona.hay@agro.au.dk

References

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A high proportion of beta-tocopherol in vitamin E is associated with poor seed longevity in rice produced under temperate conditions

  • Jae-Sung Lee (a1), Jieun Kwak (a2), Jun-Hyeon Cho (a2), Dmytro Chebotarov (a1), Mi-Ra Yoon (a2), Jeom-Sig Lee (a2), N. Ruaraidh Sackville Hamilton (a1) and Fiona R. Hay (a1) (a3)...

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