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http://dx.doi.org/10.3839/jabc.2022.055

Effects of genotype and environmental factors on content variations of the bioactive constituents in rice seeds  

Soo-Yun Park (National Institute of Agricultural Sciences)
Hyoun-Min Park (National Institute of Agricultural Sciences)
Jung-Won Jung (National Institute of Agricultural Sciences)
So Ra Jin (Korea National Food Cluster)
Sang-Gu Lee (National Institute of Agricultural Sciences)
Eun-Ha Kim (National Institute of Agricultural Sciences)
Seonwoo Oh (National Institute of Agricultural Sciences)
Publication Information
Journal of Applied Biological Chemistry / v.65, no.4, 2022 , pp. 429-438 More about this Journal
Abstract
The composition of crops reveal natural variation according to genetic characteristics and environmental factors such as the cultivated regions. For comparative investigation of the impact of genetic difference and environmental influence on the levels of bioactive components in rice seeds, 23 cultivars including indica, japonica, and tongil rice were grown in two location in Korea (Jeonju and Cheonan) for two years (2015 and 2016). Sixteen compounds consisting of tocopherols, tocotrienols, phytosterols, and policosanols were identified from 368 rice samples and the compositional data were subjected to data mining processes including principal component analysis and Pearson's correlation analysis. Under 4 different environmental conditions (Jeonju in 2015, Cheonan in 2015, Jeonju in 2016, Cheonan in 2016), the natural variability of rice seeds showed that the genetic background (indica vs japonica vs tongil) had more impact on the compositional changes of bioactive components compared to the environments. Especially, the results of correlation analysis revealed negative correlation between α-, β-tocopherols and γ-, δ-tocopherols as a representative genetic effect that did not changed by the environmental influence.
Keywords
Natural variation; Phytosterols; Policosanols; Rice; Tocopherols;
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