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De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum

Melastoma malabathricum is an important medicinal and landscape plant that is globally distributed in temperate and subtropical regions. However, available genomic information for the entire Melastomataceae family is notably limited. In view of the application potential of floral parts in secondary...

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Autores principales: Zheng, Tao, Lin, Yihua, Wang, Longping, Lin, Qiujin, Lin, Xiuxiang, Chen, Zhendong, Lin, Zhenyue
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6594232/
https://www.ncbi.nlm.nih.gov/pubmed/31275350
http://dx.doi.org/10.3389/fgene.2019.00521
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author Zheng, Tao
Lin, Yihua
Wang, Longping
Lin, Qiujin
Lin, Xiuxiang
Chen, Zhendong
Lin, Zhenyue
author_facet Zheng, Tao
Lin, Yihua
Wang, Longping
Lin, Qiujin
Lin, Xiuxiang
Chen, Zhendong
Lin, Zhenyue
author_sort Zheng, Tao
collection PubMed
description Melastoma malabathricum is an important medicinal and landscape plant that is globally distributed in temperate and subtropical regions. However, available genomic information for the entire Melastomataceae family is notably limited. In view of the application potential of floral parts in secondary metabolite extraction, we characterized for the first time the floral transcriptomes of two key M. malabathricum varieties, purple variety and white variety. Our transcriptome assembly generated 52,498 and 49,380 unigenes with an N50 of 1,906 and 1,929 bases for the purple and white varieties, respectively. Comparative analysis of two transcriptomes demonstrated that they are highly similar but also highlighted genes that are presumably lineage specific, which explains the phenotypes of each variety. Additionally, a shared transcriptional signature across the floral developmental stages was identified in both M. malabathricum varieties; this signature included pathways related to secondary metabolite synthesis, plant hormone signaling and production, energy homeostasis and nutrient assimilation pathways, and cellular proliferation. The expression levels of flavonoid accumulation and candidate flavonoid biosynthesis-related genes in M. malabathricum flower development stages validated the transcriptome findings. The transcriptome data presented in this study will serve as a valuable resource for future work on the exploitation of M. malabathricum and other related species. The gene expression dynamics during flower development will facilitate the discovery of lineage-specific genes associated with phenotypic characteristics and will elucidate the mechanism of the ontogeny of individual flower types.
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spelling pubmed-65942322019-07-03 De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum Zheng, Tao Lin, Yihua Wang, Longping Lin, Qiujin Lin, Xiuxiang Chen, Zhendong Lin, Zhenyue Front Genet Genetics Melastoma malabathricum is an important medicinal and landscape plant that is globally distributed in temperate and subtropical regions. However, available genomic information for the entire Melastomataceae family is notably limited. In view of the application potential of floral parts in secondary metabolite extraction, we characterized for the first time the floral transcriptomes of two key M. malabathricum varieties, purple variety and white variety. Our transcriptome assembly generated 52,498 and 49,380 unigenes with an N50 of 1,906 and 1,929 bases for the purple and white varieties, respectively. Comparative analysis of two transcriptomes demonstrated that they are highly similar but also highlighted genes that are presumably lineage specific, which explains the phenotypes of each variety. Additionally, a shared transcriptional signature across the floral developmental stages was identified in both M. malabathricum varieties; this signature included pathways related to secondary metabolite synthesis, plant hormone signaling and production, energy homeostasis and nutrient assimilation pathways, and cellular proliferation. The expression levels of flavonoid accumulation and candidate flavonoid biosynthesis-related genes in M. malabathricum flower development stages validated the transcriptome findings. The transcriptome data presented in this study will serve as a valuable resource for future work on the exploitation of M. malabathricum and other related species. The gene expression dynamics during flower development will facilitate the discovery of lineage-specific genes associated with phenotypic characteristics and will elucidate the mechanism of the ontogeny of individual flower types. Frontiers Media S.A. 2019-06-19 /pmc/articles/PMC6594232/ /pubmed/31275350 http://dx.doi.org/10.3389/fgene.2019.00521 Text en Copyright © 2019 Zheng, Lin, Wang, Lin, Lin, Chen and Lin. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Genetics
Zheng, Tao
Lin, Yihua
Wang, Longping
Lin, Qiujin
Lin, Xiuxiang
Chen, Zhendong
Lin, Zhenyue
De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum
title De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum
title_full De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum
title_fullStr De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum
title_full_unstemmed De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum
title_short De novo Assembly and Characterization of the Floral Transcriptomes of Two Varieties of Melastoma malabathricum
title_sort de novo assembly and characterization of the floral transcriptomes of two varieties of melastoma malabathricum
topic Genetics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6594232/
https://www.ncbi.nlm.nih.gov/pubmed/31275350
http://dx.doi.org/10.3389/fgene.2019.00521
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