Variation in Floral Scent Compositions of Different Lily Hybrid Groups

Kong, Ying; Bai, Jinrong; Lang, Lixin; Bao, Fang; Dou, Xiaoying; Wang, Huan; Shang, Hongzhong

doi:10.21273/jashs03934-16

Cited by 19 publications

(13 citation statements)

References 42 publications

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“…Volatile-emitting lily cultivars ( Lilium spp.) release various scent compounds, predominantly three monoterpenoids (1.8-cineole, (E)-b-ocimene and linalool) and one benzenoid (methyl benzoate) ( Kong et al, 2017 ). β- cis- ocimene represents the major component in Lilium spp.…”

Section: Volatile Compositionmentioning

confidence: 99%

Floral Scents and Fruit Aromas: Functions, Compositions, Biosynthesis, and Regulation

et al. 2022

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Floral scents and fruit aromas are crucial volatile organic compounds (VOCs) in plants. They are used in defense mechanisms, along with mechanisms to attract pollinators and seed dispersers. In addition, they are economically important for the quality of crops, as well as quality in the perfume, cosmetics, food, drink, and pharmaceutical industries. Floral scents and fruit aromas share many volatile organic compounds in flowers and fruits. Volatile compounds are classified as terpenoids, phenylpropanoids/benzenoids, fatty acid derivatives, and amino acid derivatives. Many genes and transcription factors regulating the synthesis of volatiles have been discovered. In this review, we summarize recent progress in volatile function, composition, biosynthetic pathway, and metabolism regulation. We also discuss unresolved issues and research perspectives, providing insight into improvements and applications of plant VOCs.

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Section: Volatile Compositionmentioning

confidence: 99%

Floral Scents and Fruit Aromas: Functions, Compositions, Biosynthesis, and Regulation

et al. 2022

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“…Lily, a popular and commercially important cut flower, emits significant amounts of VOCs, consisting mainly of monoterpenes ( Hu et al, 2017 ; Kong et al, 2017 ). Although the floral scents of the oriental Lilium hybrids are flowery and sweet, it is not liked by people owing to the emission of large amounts of volatile compounds ( Johnson et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Overexpression of LiDXS and LiDXR From Lily (Lilium ‘Siberia’) Enhances the Terpenoid Content in Tobacco Flowers

et al. 2018

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Lilium, the famous and significant cut flower, emits a variety of volatile organic compounds, which mainly contain monoterpenes, such as myrcene, (E)-β-ocimene, and linalool. To understand the molecular mechanism of monoterpene synthesis in Lilium, we cloned two potential genes in the methylerythritol 4-phosphate pathway, namely LiDXS and LiDXR, from the strong-flavored oriental Lilium ‘Siberia’ using a homology-based PCR strategy. The expression levels of LiDXS and LiDXR were consistent with the emission and accumulation of monoterpenes in different floral organs and during the floral development, indicating that these two genes may play key roles in monoterpene synthesis. Subcellular localization demonstrated that LiDXS and LiDXR are expressed in the chloroplasts. Ectopic expression in transgenic tobacco suggested that the flowers of LiDXS and LiDXR transgenic lines accumulated substantially more diterpene, sclareol, compared to the plants transformed with empty vector. Surprisingly, increased content of the monoterpene, linalool and sesquiterpene, caryophyllene, were detected in the LiDXR transgenic lines, whereas the emission of caryophyllene, increased in one of the LiDXS transgenic tobacco lines, indicating that these two genes play significant roles in the synthesis of floral volatiles in the transgenic plants. These results demonstrate that LiDXR can contribute to monoterpene biosynthesis in Lilium ‘Siberia’; however, the role of LiDXS in the biosynthesis of monoterpenes needs further study.

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“…In recent years, ornamental plant researchers and breeders have paid increasing attention to some new aromatic ornamental plants, such as rose [12], petunia [13][14], bearded iris [15], and freesia [16]. The main VOCs in aromatic plants such as lily [17], Anthurium [18], and Barringtonia racemosa [19] have been detected and analyzed. Zhenzhen et al [12] detected the aroma components of three different varieties of Yunnan edible roses by headspace solid-phase microextraction combined with gas chromatographymass spectrometry (HS-SPME-GC-MS), and detected three key components, RhNUDX1, RhPAR, and RhOOMT1.…”

Section: Introductionmentioning

confidence: 99%

“…Kong et al. [17] detected the oral aroma of lily varieties with different fragrance phenotypes and found that the aroma components varied between different varieties, of which (E)-b-ocimene was the main aroma component. Wei et al [18] detected VOCs in two varieties of Anthurium and their hybrid progeny.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome and metabolome reveal key genes in the phenylpropane pathway to regulate the floral fragrance of Rhododendron fortunei

Yang

Qin

Jia

et al. 2022

Preprint

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Background: Floral aroma is an important plant trait and it is one of the main traits of Rhododendron varieties which affect their ornamental value. The volatile compounds of floral aroma are secondary metabolites. In order to reveal the key genes of the phenylpropane pathway, which regulates the fragrance of Rhododendron fortunei, we performed a comprehensive transcriptome and metabolome analysis of the petals of the petals of two alpine rhododendrons from two different varieties: the scented Rhododendron fortunei and the non-scented Rhododendron ‘Nova Zembla’. Results: Transcriptomic and qRT-PCR results showed that nine candidate genes were highly expressed in R. fortunei, but down-regulated in R. ‘Nova Zembla’. The correlation analysis of candidate genes and metabolites revealed nine key genes involved in the regulation of floral aroma in the phenylpropane pathway. Among them, EGS was significantly positively correlated with various volatile benzene/phenylpropane compounds, and significantly negatively correlated with various non-volatile compounds; CCoAOMT, PAL, C4H,and BALDH were significantly negatively correlated with various volatile benzene/phenylpropane compounds, and significantly positively correlated with various non-volatile compounds. CCR, CAD, 4CL, and EGSwere significantly negatively correlated with various benzene/phenylpropane compounds. The validation of RfSAMT proved that RfSAMT gene regulated the synthesis of aromatic substances in R. fortunei. Conclusion: The findings of this study indicated that key candidate genes and metabolites involved in the biosynthetic pathway of phenylpropane may regulate the fragrance of R. fortunei. This lays a foundation for further research on the molecular mechanism of fragrance synthesis in the genus Rhododendron.

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Variation in Floral Scent Compositions of Different Lily Hybrid Groups

Cited by 19 publications

References 42 publications

Floral Scents and Fruit Aromas: Functions, Compositions, Biosynthesis, and Regulation

Floral Scents and Fruit Aromas: Functions, Compositions, Biosynthesis, and Regulation

Overexpression of LiDXS and LiDXR From Lily (Lilium ‘Siberia’) Enhances the Terpenoid Content in Tobacco Flowers

Transcriptome and metabolome reveal key genes in the phenylpropane pathway to regulate the floral fragrance of Rhododendron fortunei

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