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- W2899207936 abstract "Abstract Introduction Flowering of the Asian skunk cabbage ( Symplocarpus renifolius , Araceae) shows a sequential expression of female, bisexual and male sex phases. The protogynous thermogenic inflorescence has unpleasant odours, but the contributing chemical composition is poorly understood. Objective To determine the volatile composition of odour emissions from each S. renifolius flowering phase. Methodology The dynamic headspace method was used to collect floral volatiles from six intact S. renifolius inflorescences in their natural habitat. Collected volatiles from the three flowering phases were analysed using gas chromatography–mass spectrometry/olfactometry (GC–MS/O). Results Female‐phase inflorescences were characterised by an earthy‐rotten‐minty odour, while male‐phase inflorescences typically exhibited a rotten‐oily odour. Approximately 160 compounds were detected in volatiles from the three phases. Common to all phases were 3‐methylbutyl 3‐methylbutanoate, 1,8‐cineole, dimethyl disulphide and sabinene, together accounting for 52 to 54% of total volatiles. GC–MS/O revealed that at least 28 volatiles including eight S ‐containing compounds contributed to the unpleasant odour of S. renifolius . Among them, dimethyl disulphide (onion‐like), methional (potato‐like), and the tentatively identified methyl dithioformate (garlic‐like) were intense odour‐active compounds in each floral phase. Additionally, 2‐isopropyl‐3‐methoxypyrazine (IPMP) was a major contributor to the earthy odour that was characteristic of the female phase. Conclusions No marked changes were observed in floral volatile compositions over the three flowering phases of S. renifolius . Instead, flower phase‐dependent proportional changes of minor components (e.g. IPMP and 2,3‐butanedione) altered the odour characteristics between the female and male phases." @default.
- W2899207936 created "2018-11-09" @default.
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- W2899207936 date "2018-10-31" @default.
- W2899207936 modified "2023-09-30" @default.
- W2899207936 title "Compositional changes of the floral scent volatile emissions from Asian skunk cabbage (<i>Symplocarpus renifolius</i> , Araceae) over flowering sex phases" @default.
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- W2899207936 doi "https://doi.org/10.1002/pca.2799" @default.
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