Integrating RNA-seq with functional expression to analyze the regulation and characterization of genes involved in monoterpenoid biosynthesis in Nepeta tenuifolia Briq
Copyright © 2021 Elsevier Masson SAS. All rights reserved.
| Publié dans: | Plant physiology and biochemistry : PPB. - 1991. - 167(2021) vom: 01. Okt., Seite 31-41 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2021
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| Accès à la collection: | Plant physiology and biochemistry : PPB |
| Sujets: | Journal Article Functional characterization Monoterpene biosynthesis Nepeta tenuifolia Briq. qRT-PCR Monoterpenes |
| Résumé: | Copyright © 2021 Elsevier Masson SAS. All rights reserved. Nepeta tenuifolia Briq. (Lamiaceae) is a medicinal plant historically used in the East Asia region to treat cold and fever, and it is currently used as a clinically effective treatment for respiratory diseases. We previously found that monoterpenoids are the dominant volatile secondary metabolites in N. tenuifolia and their biosynthesis occurs in peltate glandular trichomes. To gain an insight into the molecular mechanisms underlying monoterpenoid biosynthesis in N. tenuifolia, we conducted transcriptome sequencing and examined the expression differences in monoterpene molecular pathway-related genes in different tissues and growth stages by qRT-RCR. In total, six p-menthane monoterpene biosynthetic genes in the (+)-menthone pathway were identified and cloned successfully based on transcriptome data. Moreover, the major constituents, including (+)-limonene, (-)-pulegone and (+)-menthone showed greater accumulation in the spikes than in other organs, such as the expression levels of related key enzyme genes. Additionally, the relative expression of pulegone reductase was the highest at 84 days, showing an inverse trend from (-)-pulegone relative content and leading to (+)-menthone accumulation in peltate glandular trichomes. Finished cloning of the gene for limonene 3-hydroxylase in N. tenuifolia (NtL3OH), heterologous expression in yeast, and in vitro assays were performed for functional characterization. Our study provides an important resource for further research of secondary metabolism of monoterpenes in peltate glandular trichomes of N. tenuifolia and other homologous species |
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| Description: | Date Completed 13.10.2021 Date Revised 13.10.2021 published: Print-Electronic ErratumIn: Plant Physiol Biochem. 2021 Oct;167:911. doi: 10.1016/j.plaphy.2021.09.020. - PMID 34544008 Citation Status MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2021.07.026 |