De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism

Abstract Background Zanthoxylum armatum (Z. armatum) is a highly economically important tree that presents a special numbing taste. However, the underlying regulatory mechanism of the numbing taste remains poorly understood. Thus, the elucidation of the key genes associated with numbing taste biosyn...

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Main Authors: Wen-Kai Hui, Fei-Yan Zhao, Jing-Yan Wang, Xiao-Yang Chen, Jue-Wei Li, Yu Zhong, Hong-Yun Li, Jun-Xing Zheng, Liang-Zhen Zhang, Qing-Min Que, Ai-Min Wu, Wei Gong
Format: Article
Language:English
Published: BMC 2020-01-01
Series:BMC Genomics
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Online Access:https://doi.org/10.1186/s12864-020-6521-4
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author Wen-Kai Hui
Fei-Yan Zhao
Jing-Yan Wang
Xiao-Yang Chen
Jue-Wei Li
Yu Zhong
Hong-Yun Li
Jun-Xing Zheng
Liang-Zhen Zhang
Qing-Min Que
Ai-Min Wu
Wei Gong
author_facet Wen-Kai Hui
Fei-Yan Zhao
Jing-Yan Wang
Xiao-Yang Chen
Jue-Wei Li
Yu Zhong
Hong-Yun Li
Jun-Xing Zheng
Liang-Zhen Zhang
Qing-Min Que
Ai-Min Wu
Wei Gong
author_sort Wen-Kai Hui
collection DOAJ
description Abstract Background Zanthoxylum armatum (Z. armatum) is a highly economically important tree that presents a special numbing taste. However, the underlying regulatory mechanism of the numbing taste remains poorly understood. Thus, the elucidation of the key genes associated with numbing taste biosynthesis pathways is critical for providing genetic information on Z. armatumand the breeding of high-quality germplasms of this species. Results Here, de novo transcriptome assembly was performed for the five major organs of Z. armatum, including the roots, stems, leaf buds, mature leaves and fruits. A total of 111,318 unigenes were generated with an average length of 1014 bp. Additionally, a large number of SSRs were obtained to improve our understanding of the phylogeny and genetics of Z. armatum. The organ-specific unigenes of the five major samples were screened and annotated via GO and KEGG enrichment analysis. A total of 53 and 34 unigenes that were exclusively upregulated in fruit samples were identified as candidate unigenes for terpenoid biosynthesis or fatty acid biosynthesis, elongation and degradation pathways, respectively. Moreover, 40 days after fertilization (Fr4 stage) could be an important period for the accumulation of terpenoid compounds during the fruit development and maturation of Z. armatum. The Fr4 stage could be a key point at which the first few steps of the fatty acid biosynthesis process are promoted, and the catalysis of subsequent reactions could be significantly induced at 62 days after fertilization (Fr6 stage). Conclusions The present study realized de novo transcriptome assembly for the five major organs of Z. armatum. To the best of our knowledge, this study provides the first comprehensive analysis revealing the genes underlying the special numbing taste of Z. armatum. The assembled transcriptome profiles expand the available genetic information on this species and will contribute to gene functional studies, which will aid in the engineering of high-quality cultivars of Z. armatum.
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spelling doaj.art-e23b88d058c84b75a1a141a5772de3912022-12-21T23:05:13ZengBMCBMC Genomics1471-21642020-01-0121111510.1186/s12864-020-6521-4De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolismWen-Kai Hui0Fei-Yan Zhao1Jing-Yan Wang2Xiao-Yang Chen3Jue-Wei Li4Yu Zhong5Hong-Yun Li6Jun-Xing Zheng7Liang-Zhen Zhang8Qing-Min Que9Ai-Min Wu10Wei Gong11Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityKey Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityKey Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityGuangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural UniversityKey Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityKey Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityAgricultural Technology Extension Center in Yantan DistrictKey Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityKey Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityGuangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural UniversityGuangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural UniversityKey Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UniversityAbstract Background Zanthoxylum armatum (Z. armatum) is a highly economically important tree that presents a special numbing taste. However, the underlying regulatory mechanism of the numbing taste remains poorly understood. Thus, the elucidation of the key genes associated with numbing taste biosynthesis pathways is critical for providing genetic information on Z. armatumand the breeding of high-quality germplasms of this species. Results Here, de novo transcriptome assembly was performed for the five major organs of Z. armatum, including the roots, stems, leaf buds, mature leaves and fruits. A total of 111,318 unigenes were generated with an average length of 1014 bp. Additionally, a large number of SSRs were obtained to improve our understanding of the phylogeny and genetics of Z. armatum. The organ-specific unigenes of the five major samples were screened and annotated via GO and KEGG enrichment analysis. A total of 53 and 34 unigenes that were exclusively upregulated in fruit samples were identified as candidate unigenes for terpenoid biosynthesis or fatty acid biosynthesis, elongation and degradation pathways, respectively. Moreover, 40 days after fertilization (Fr4 stage) could be an important period for the accumulation of terpenoid compounds during the fruit development and maturation of Z. armatum. The Fr4 stage could be a key point at which the first few steps of the fatty acid biosynthesis process are promoted, and the catalysis of subsequent reactions could be significantly induced at 62 days after fertilization (Fr6 stage). Conclusions The present study realized de novo transcriptome assembly for the five major organs of Z. armatum. To the best of our knowledge, this study provides the first comprehensive analysis revealing the genes underlying the special numbing taste of Z. armatum. The assembled transcriptome profiles expand the available genetic information on this species and will contribute to gene functional studies, which will aid in the engineering of high-quality cultivars of Z. armatum.https://doi.org/10.1186/s12864-020-6521-4Zanthoxylum armatumDe novo transcriptomeAromatic compoundsFatty acid
spellingShingle Wen-Kai Hui
Fei-Yan Zhao
Jing-Yan Wang
Xiao-Yang Chen
Jue-Wei Li
Yu Zhong
Hong-Yun Li
Jun-Xing Zheng
Liang-Zhen Zhang
Qing-Min Que
Ai-Min Wu
Wei Gong
De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism
BMC Genomics
Zanthoxylum armatum
De novo transcriptome
Aromatic compounds
Fatty acid
title De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism
title_full De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism
title_fullStr De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism
title_full_unstemmed De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism
title_short De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism
title_sort de novo transcriptome assembly for the five major organs of zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism
topic Zanthoxylum armatum
De novo transcriptome
Aromatic compounds
Fatty acid
url https://doi.org/10.1186/s12864-020-6521-4
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