Journal
CURRENT ISSUES IN MOLECULAR BIOLOGY
Volume 44, Issue 5, Pages 1867-1888Publisher
MDPI
DOI: 10.3390/cimb44050128
Keywords
Angelica sinensis; flowering; lncRNA; vernalization; transcriptomic analysis
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Funding
- State Key Laboratory of Aridland Crop Science/Gansu Agricultural University [GSCS-2021-Z03]
- National Natural Science Foundation of China [32160083]
- China Agriculture Research System of MOF and MARA [CARS-21]
- Assurance Project of Ecological Planting and Quality of Daodi Herbs [202103003]
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In this study, long noncoding RNAs (lncRNAs) associated with flowering in Angelica sinensis were identified through full-length transcriptomic analysis. The results showed that these lncRNAs positively or negatively regulate the flowering of A. sinensis, providing new insights into the regulatory mechanism of flowering in this plant.
Angelica sinensis is a low-temperature and long-day perennial plant that produces bioactive compounds such as phthalides, organic acids, and polysaccharides for various types of clinical agents, including those with cardio-cerebrovascular, hepatoprotective, and immunomodulatory effects. To date, the regulatory mechanism of flowering under the photoperiod has been revealed, while the regulatory network of flowering genes during vernalization, especially in the role of lncRNAs, has yet to be identified. Here, lncRNAs associated with flowering were identified based on the full-length transcriptomic analysis of A. sinensis at vernalization and freezing temperatures, and the coexpressed mRNAs of lncRNAs were validated by qRT-PCR. We obtained a total of 2327 lncRNAs after assessing the protein-coding potential of coexpressed mRNAs, with 607 lncRNAs aligned against the TAIR database of model plant Arabidopsis, 345 lncRNAs identified, and 272 lncRNAs characterized on the SwissProt database. Based on the biological functions of coexpressed mRNAs, the 272 lncRNAs were divided into six categories: (1) chromatin, DNA/RNA and protein modification; (2) flowering; (3) stress response; (4) metabolism; (5) bio-signaling; and (6) energy and transport. The differential expression levels of representatively coexpressed mRNAs were almost consistent with the flowering of A. sinensis. It can be concluded that the flowering of A. sinensis is positively or negatively regulated by lncRNAs, which provides new insights into the regulation mechanism of the flowering of A. sinensis.
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