The Variation of Oncidium Rosy Sunset Flower Volatiles with Daily Rhythm, Flowering Period, and Flower Parts

Chiu, Yu‐Lung; Chen, Hsin-Chun; Chang, Chen

doi:10.3390/molecules22091468

Cited by 13 publications

(11 citation statements)

References 24 publications

(39 reference statements)

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“…Variation in volatile mixture across orchid species allows for reduced attractiveness to individuals and species, thereby increasing specificity to only selected few pollinator species, such as in bees for pollination of Catasetum species (Milet-Pinheiro and Gerlach 2017). Diurnal bees were known as diurnal pollinators for Phalaenopsis species (Chiu et al, 2017). A similar trend was also observed in the volatile emission of Phalaenopsis Nobby's Pacific Sunset, in which the volatile emission was most active during the morning (Yeh et al 2014) for emission of linalool, geraniol, and α-farnesene.…”

Section: Effect Of Different Observation Period On the Phalaenopsis Bellina Floral Scent Emissionsupporting

confidence: 63%

“…A similar trend was also observed in the volatile emission of Phalaenopsis Nobby's Pacific Sunset, in which the volatile emission was most active during the morning (Yeh et al 2014) for emission of linalool, geraniol, and α-farnesene. Chiu et al (2017) also reported the highest odor emission in the morning from 10 am to 12 pm for Oncidium Rosy Sunset orchid. Interestingly, a similar study conducted by Chuang et al (2017) revealed otherwise, where emissions of volatiles monoterpene linalool and eucalyptol from P. bellina was detected in the afternoon.…”

Section: Effect Of Different Observation Period On the Phalaenopsis Bellina Floral Scent Emissionmentioning

confidence: 92%

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November 2020

2020

Plant Omics

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Phalaenopsis bellina, is an orchid widely known for their distinctive fragrance. Of late, fragrant orchids are getting more attention from Orchid breeders for their horticultural market value. Although volatile compounds have been identified in several orchid species, the floral scent emission of P. bellina is far from understood. Therefore, this study was carried out to investigate the influence of different timing and floral development stages on the volatile emissions from P. bellina flowers using Solid Phase Micro Extraction (SPME) and Gas Chromatography-Mass Spectrometry (GC-MS). The volatile compound was extracted during morning and afternoon sessions from three different floral developmental stages. The volatile compounds emitted from flowers from two different sessions were trapped with SPME fiber for 30 minutes before directly injected into GC-MS for identification. Results showed that approximately 79 volatile compounds were identified, with the terpenoid presented as the major compound class. P. bellina had the highest number of volatiles during the morning and full bloom (41), with 29.82% monoterpene and 23.33% sesquiterpenes accounted in total. α-farnesene (19.56%) was abundance during morning emission and remains as the highest volatile in afternoon emission (44.08%), even higher when compared to morning emission. However, a decrease in the volatile compound was observed in afternoon emission, in which only 34 volatile compounds detected. Meanwhile, partial bloom developmental stage revealed linalool as the major terpenoid volatile compounds (25.89%), with only 20 volatile compounds recorded. On the other hand, no volatile compounds were recorded and profiled from flower bud stage. The establishment of a floral scent study provides a brief overview of the regulation of fragrance in P. bellina, which can be continued through gene isolation or fragrance-related enzymes study. This information will provide necessary information on orchid floral scent research that useful in boosting horticultural trade of the scented orchids and their function in pollination ecology study.

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Section: Effect Of Different Observation Period On the Phalaenopsis Bellina Floral Scent Emissionsupporting

confidence: 63%

Section: Effect Of Different Observation Period On the Phalaenopsis Bellina Floral Scent Emissionmentioning

confidence: 92%

November 2020

2020

Plant Omics

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“… 1 Tentatively identification of components based on GC-MS library (Wiley 7n). 2 literature retention indices obtain from [ 19 , 22 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ] and reference were checked for all on DB-1. 3 Retention indices, using paraffin (C 5 –C 25 ) as references.…”

Section: Figurementioning

confidence: 99%

“…Cai et al [4] speculated that this phenomenon was caused by the hydrolysis and pyrolysis of the compounds during the extraction process. [19,22,[27][28][29][30][31][32][33][34][35][36] and reference were checked for all on DB-1. 3 Retention indices, using paraffin (C 5 -C 25 ) as references.…”

Section: Sdmentioning

confidence: 99%

Effects of Different Extraction Methods on Vanilla Aroma

Yeh

Chou

et al. 2022

Molecules

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To establish the analytic conditions for examining the aroma quality of vanilla pods, we compared different extraction methods and identified a suitable option. We utilized headspace solid-phase microextraction (HS-SPME), steam distillation (SD), simultaneous steam distillation (SDE) and alcoholic extraction combined with gas chromatography (GC) and gas chromatography–mass spectrometry (GC-MS) to identify volatile components of vanilla pods. A total of 84 volatile compounds were identified in this experiment, of which SDE could identify the most volatile compounds, with a total of 51 species, followed by HS-SPME, with a total of 28 species. Ten volatile compounds were identified by extraction with a minimum of 35% alcohol. HS-SPME extraction provided the highest total aroma peak areas, and the peak areas of aldehydes, furans, alcohols, monoterpenes and phenols compounds were several times higher than those of the other extraction methods. The results showed that the two technologies, SDE and HS-SPME, could be used together to facilitate analysis of vanilla pod aroma.

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“…Flower fragrance is determined by complex mixtures of volatile compounds, generally emitted from petals, sepals, and the gynostemium of orchids [2]. In plants, flower fragrance is mostly an adaptation for attracting insects for pollination or a defense against predation by herbivores [3].…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic profiling of the flower scent biosynthesis pathway of Cymbidium faberi Rolfe and functional characterization of its jasmonic acid carboxyl methyltransferase gene

Wang

Hong

et al. 2019

BMC Genomics

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BackgroundCymbidium faberi, one of the most famous oriental orchids, has a distinct flower scent, which increases its economic value. However, the molecular mechanism of the flower scent biosynthesis was unclear prior to this study. Methyl jasmonate (MeJA) is one of the main volatile organic compounds (VOC) produced by the flowers of C. faberi. In this study, unigene 79,363 from comparative transcriptome analysis was selected for further investigation.ResultsA transcriptome comparison between blooming and withered flowers of C. faberi yielded a total of 9409 differentially expressed genes (DEGs), 558 of which were assigned to 258 pathways. The top ten pathways included α-linolenic acid metabolism, pyruvate metabolism and fatty acid degradation, which contributed to the conversion of α-linolenic acid to MeJA. One of the DEGs, jasmonic acid carboxyl methyltransferase (CfJMT, Unigene 79,363) was highly expressed in the blooming flower of C. faberi, but was barely detected in leaves and roots. Although the ectopic expression of CfJMT in tomato could not increase the MeJA content, the expression levels of endogenous MeJA biosynthesis genes were influenced, especially in the wound treatment, indicating that CfJMT may participate in the response to abiotic stresses.ConclusionThis study provides a basis for elucidating the molecular mechanism of flower scent biosynthesis in C. faberi, which is beneficial for the genetically informed breeding of new cultivars of the economically valuable oriental orchids.Electronic supplementary materialThe online version of this article (10.1186/s12864-019-5501-z) contains supplementary material, which is available to authorized users.

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The Variation of Oncidium Rosy Sunset Flower Volatiles with Daily Rhythm, Flowering Period, and Flower Parts

Cited by 13 publications

References 24 publications

November 2020

November 2020

Effects of Different Extraction Methods on Vanilla Aroma

Transcriptomic profiling of the flower scent biosynthesis pathway of Cymbidium faberi Rolfe and functional characterization of its jasmonic acid carboxyl methyltransferase gene

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