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Communication

Variation in Seed Metabolites between Two Indica Rice Accessions Differing in Seed Longevity

by 1 and 1,2,*
1
T.T. Chang Genetic Resources Center, Strategic Innovation Platform, International Rice Research Institute, Los Baños, College, Laguna 4031, Philippines
2
Department of Agroecology, Aarhus University, Forsøgsvej 1, 4200 Slagelse, Denmark
*
Author to whom correspondence should be addressed.
Plants 2020, 9(9), 1237; https://doi.org/10.3390/plants9091237
Received: 20 August 2020 / Revised: 9 September 2020 / Accepted: 17 September 2020 / Published: 19 September 2020
For a better understanding of germination after seed storage, metabolite profiling was conducted using hybrid triple quadrupole time-of-flight (QTOF) mass spectrometry. After moisture content (MC) equilibration, seeds of “WAS170” (short-lived) and “IR65483” (long-lived) were stored at 10.9% MC and 45 °C. Samples for metabolite analysis were taken after 0 and 20 days of storage. Among 288 metabolites, two flavonoids (kaempferide and quercetin-3-arabinoside), one amino acid (S-sulfocysteine) and one sugar (D-glucose) increased in “IR65483” seeds after storage but were not detected in “WAS170” seeds. Based on the genome sequence database, we identified clear allelic differences with non-synonymous mutations on the six flavonol synthase genes regulating the accumulation of kaempferol- and quercetin-metabolites. On the other hand, two metabolites (thiamine monophosphate and harmaline) increased in short-lived seeds after storage; these metabolites could be potential biochemical indicators of seed deterioration. View Full-Text
Keywords: QTOF mass spectrometry; rice; seed metabolites; seed longevity QTOF mass spectrometry; rice; seed metabolites; seed longevity
MDPI and ACS Style

Lee, J.-S.; Hay, F.R. Variation in Seed Metabolites between Two Indica Rice Accessions Differing in Seed Longevity. Plants 2020, 9, 1237. https://doi.org/10.3390/plants9091237

AMA Style

Lee J-S, Hay FR. Variation in Seed Metabolites between Two Indica Rice Accessions Differing in Seed Longevity. Plants. 2020; 9(9):1237. https://doi.org/10.3390/plants9091237

Chicago/Turabian Style

Lee, Jae-Sung; Hay, Fiona R. 2020. "Variation in Seed Metabolites between Two Indica Rice Accessions Differing in Seed Longevity" Plants 9, no. 9: 1237. https://doi.org/10.3390/plants9091237

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