Analysis of Relative Scent Intensity, Volatile Compounds and Gene Expression in Freesia "Shiny Gold"

Plants
Aparna SrinivasanYoun Jung Choi

Abstract

Scent is one of the most important economic traits in Freesia hybrida. "Shiny Gold", a popular cultivar in South Korea, is widely cultivated for its scent. The relative scent intensity of "Shiny Gold" was approximately 16% higher in full-bloomed flower when compared to the yellow bud stage, while tissue-specifically, tepals showed higher intensity in electronic-nose (e-nose) analysis. E-nose analysis also showed that the scent intensity of "Shiny Gold" was higher and lower than "10C3-424" and "10C3-894", respectively, and was similar to "Yvonne". These results correlated to those of the olfactory tests. In total, 19 volatile compounds, including linalool, β-ocimene, D-limonene, trans-β-ionone were detected in gas chromatography-mass spectrometry analysis. Among these, linalool was the major volatile compound, accounting for 38.7% in "Shiny Gold". Linalool synthase and TPS gene expression corresponded to the scent intensity of the four cultivars, with the lowest expression in the "10C3-424". TPS 2, TPS 3, TPS 5, TPS 6 and TPS 8 were highly expressed in both bud and flower in "Shiny Gold", while the expression of TPS 4 was lower, relative to other TPS genes in both the flowering stages. These results may aid in enhancing scent co...Continue Reading

References

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Citations

Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Qian WeiHerong Guo

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Methods Mentioned

BETA
PCA
electrophoresis

Software Mentioned

Alpha Soft
nose MOS
mass hunter

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