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240704s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2024.108891
|2 doi
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|a eng
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|a Du, Zhihui
|e verfasserin
|4 aut
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|a Multi-omics analyses and botanical perfumer hypothesis provide insights into the formation and maintenance of aromatic characteristics of Dendrobium loddigesii flowers
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 04.08.2024
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|a Date Revised 05.08.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2024 Elsevier Masson SAS. All rights reserved.
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|a Dendrobium loddigesii, a member of the Orchidaceae family, is a valuable horticultural crop known for its aromatic qualities. However, the mechanisms responsible for the development of its aromatic characteristics remain poorly understood. To elucidate these underlying mechanisms, we assembled the first chromosome-level reference genome of D. loddigesii using PacBio HiFi-reads, Illumina short-reads, and Hi-C data. The assembly comprises 19 pseudochromosomes with N50 contig and N50 scaffold sizes of 55.15 and 89.94 Mb, respectively, estimating the genome size to be 1.68 Gb, larger than that of other sequenced Dendrobium species. During the flowering stages, we conducted a comprehensive analysis combining volatilomics and transcriptomics to understand the characteristics and biosynthetic mechanisms pathways of the floral scent. Our findings emphasize the significant contribution of aromatic terpenoids, especially monoterpenoids, in defining the floral aroma. Furthermore, we identified two crucial terpene synthase (TPS) genes that play a key role in maintaining the aroma during flowering. Through the integration volatilomics data with catalytic assays of DlTPSbs proteins, we identified specific compounds responsible for the aromatic characteristics of D. loddigesii. This integrated analysis of the genome, transcriptome, and volatilome, offers valuable insights into the development and preservation of D. loddigesii's aromatic characteristics, setting the stage for further exploration of the botanical perfumer hypothesis
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|a Journal Article
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|a Aromatic characteristics
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|a Botanical perfumer hypothesis
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|a Dendrobium loddigesii
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|a Multi-omics
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|a Terpenoids
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|a Plant Proteins
|2 NLM
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|a Alkyl and Aryl Transferases
|2 NLM
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| 650 |
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|a EC 2.5.-
|2 NLM
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|a terpene synthase
|2 NLM
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|a EC 2.5.1.-
|2 NLM
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| 700 |
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|a Jin, Yuxuan
|e verfasserin
|4 aut
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|a Yang, Xiyu
|e verfasserin
|4 aut
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|a Xia, Kuaifei
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Zhilin
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 214(2024) vom: 01. Aug., Seite 108891
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|u http://dx.doi.org/10.1016/j.plaphy.2024.108891
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