Tabernaemontana coronaria
What's the taxonomical classification of Tabernaemontana coronaria?
Tabernaemontana coronaria belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida, it is further categorized into the subclass Magnoliidae and the order Gentianaales. This species is a member of the family Apocynaceae, falling under the genus Tabernaemontana, and is specifically identified by its species name, coronaaria.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Gentianales |
| Family | Apocynaceae |
| Genus | Tabernaemontana |
| Species | coronaria |
What are the morphological characteristics of this plant?
Tabernaemontana coronaria has an erect, woody shrub habit characterized by opposite, elliptical, dark green leaves with entire margins and an acute apex. The foliage typically features a glossy texture and a prominent midrib that distinguishes its leaf structure. Its most striking morphological feature is the salverform white flowers that emerge from terminal clusters. These blossoms possess a long, slender corolla tube that expands into five spreading lobes. The plant also produces small, globose fruits that develop from the fertilized ovaries.
What is the geographical distribution of this plant?
This plant is native to tropical regions of Africa, specifically spreading across various parts of West, Central, and East Africa. It thrives in humid environments characterized by warm temperatures and consistent rainfall. Its range extends through many lowland areas where dense vegetation provides necessary shade. While primarily found in its native African habitats, it is sometimes introduced to other tropical zones for ornamental purposes. This widespread distribution highlights its ability to adapt to diverse tropical ecosystems.
How is this plant cultivated?
This plant requires well-draining, fertile soil and consistent moisture with bright, indirect sunlight to thrive in tropical or subtropical environments.
It performs best when kept in temperatures between 60 and 85 degrees Fahrenheit. Frequent watering is necessary to prevent the soil from drying out completely, though it should never sit in stagnant water. Providing regular fertilization during the growing season helps encourage the development of its characteristic white flowers.
Once established, the plant is relatively easy to maintain as long as humidity levels remain moderately high.
What parts of this plant are used medicinally?
This plant utilizes its leaves for various medicinal applications in traditional healing practices. These leaves are often crushed or boiled to create topical applications for treating skin irritations and wounds. Some practitioners use leaf decoctions to help manage internal ailments such as digestive issues or fever. The chemical constituents found within the foliage provide the therapeutic properties necessary for these remedies. By applying the leaf extracts, individuals aim to alleviate specific symptoms associated with inflammation and infection.
According to a study published by "Journal of ethnopharmacology", the leaf of Tabernaemontana coronaria is used medicinally for its antituberculosis activity. This plant was one of five extracts that exhibited activity against Mycobacterium tuberculosis H37Rv. The leaf extract of Tabernaemontana coronaria demonstrated a minimum inhibitory concentration (MIC) of 800 μg/ml. This result is part of a study that screened 78 plant extracts from 70 Malaysian plant species. Overall, 38 plant extracts from 36 species showed antituberculosis activity with MICs ranging from 1600-400 μg/ml.
The parts of this plant that are ued medicinally are shown in the list below.
- leaf
What traditional systems uses this plant?
This plant, known as Tabernaemontana coronaaria, has been utilized in various traditional medicine systems across tropical regions to treat ailments such as skin infections, inflammation, and digestive issues.
Practitioners often prepare decoctions or poultices from the leaves and stems to apply directly to wounds or sore muscles. In certain cultural practices, the plant is also employed in ritualistic ceremonies or as a component in spiritual healing traditions. The latex or juices extracted from the plant are sometimes used topically to manage localized swelling or parasitic infestations.
These historical applications reflect a deep ethnobotanical knowledge passed down through generations of indigenous healers.
What are the pharmacological activities of Tabernaemontana coronaria?
This plant has potent anticancer and antituberculosis pharmacological activities driven by its unique bioactive secondary metabolites. Research indicates that its chemical constituents can induce apoptosis in various malignant cell lines, effectively inhibiting tumor growth. Additionally, the plant exhibits significant antimicrobial properties that target Mycobacterium tuberculosis, offering potential for new drug development. These therapeutic effects are primarily attributed to the presence of indole alkaloids and other phytochemicals found within the species. Further investigation into these compounds remains essential for clinical application in treating these serious diseases.
According to a study published by "Journal of complementary & integrative medicine", Tabernaemontana coronaaria contains the bioactive alkaloid Jerantinine A which shows potential as an anti-cancer agent. This substance was isolated using column chromatography and characterized through UV-visible spectroscopy, FTIR, and NMR. Molecular docking studies were utilized to evaluate its binding affinities with 6 critical protein targets. These targets include PTEN and androgen receptor for prostate cancer, CXCR4 and HER2 for ovarian cancer, and CDK1 and NEK2 for breast cancer. The analysis revealed that Jerantinine A exhibits strong binding affinities with all 6 protein targets to potentially inhibit cancer cell proliferation.
The primary pharmacological activities of this plant are shown in the list below.
- anticancer
- antituberculosis
What medicinal compounds this plant contains?
This plant contains several bioactive indole alkaloids including 10-methoxy coronaridine, coronaridine, tabernaelegantine B, tabernaemontanine, and voacamine. These specific medicinal compounds are primarily concentrated within the plant's latex and various tissues. Research suggests that these alkaloids possess significant pharmacological potential for diverse therapeutic applications. Scientists continue to investigate how these chemical constituents interact with biological systems to develop new drugs. The presence of such a complex mixture of alkaloids makes the species a subject of interest in phytochemical studies.
According to a study published by "Natural product research", chemical investigation of the stem bark of Tabernaemontana coronaoria led to the isolation of 10 specific compounds. These include 3 carbazole alkaloids, 1 acridone alkaloid, 3 monomeric indole alkaloids, and 2 dimeric indole alkaloids. The monomeric indole alkaloids identified are coronaridine, 10-methoxy coronaridine, and tabernaemontanine. The dimeric indole alkaloids are voacamine and tabernaelegantine B. The methanol extract of this plant exhibited significant antimutagenic activity against NPD and sodium azide for Salmonella typhimurium TA98 and TA100 strains.
The primary medicinal compounds of this plant are shown in the list below.
- 10-methoxy coronaridine
- coronaridine
- dictamine
- tabernaelegantine B
- voacamine
What health conditions is this plant used for?
This plant is used for treating skin diseases, fever, inflammation, and various digestive issues. Local communities often employ its leaves or bark in traditional medicinal preparations to address these specific ailments. The plant contains various bioactive compounds that are believed to contribute to its therapeutic properties. Researchers continue to study these chemical constituents to better understand their medicinal potential. Such applications highlight the importance of the species in traditional ethnobotanical practices.
As discussed in a study, Tabernaemontana coronaaria contains the bioactive alkaloid Jerantinine A which shows potential for treating prostate, breast, and ovarian cancers. The research assessed its interactions with 6 critical protein targets to evaluate its anti-cancer potential. These targets include PTEN and androgen receptor for prostate cancer, CXCR4 and HER2 for ovarian cancer, and CDK1 and NEK2 for breast cancer. Molecular docking analyses demonstrated that Jerantinine A exhibits strong binding affinities with all 6 protein targets. This suggests the plant could inhibit cancer cell proliferation by interfering with key signaling pathways.
The main health conditions this plant is used for are shown in the list below.
- breast cancer
- ovarian cancer
- prostate cancer
- tuberculosis
What are the herbal preparations of this plant?
This plant is used to create medicinal preparations such as decoctions, poultices, and infusions to treat ailments including skin infections, inflammation, and gastrointestinal distress.
The latex extracted from the leaves or stems is often applied topically to soothe wounds and reduce swelling. In some traditional practices, crushed leaves are infused in water to serve as a remedy for fever or digestive issues. These preparations rely on the plant's bioactive compounds to provide therapeutic effects for various localized and systemic conditions.
Careful dosage is essential when utilizing these herbal extracts due to their potent chemical constituents.
What side effects this plant can have?
This plant can cause severe physiological distress including nausea, vomiting, dizziness, convulsions, and hallucinations due to its toxic chemical compounds. Ingesting any part of the plant may trigger intense gastrointestinal upset like nausea and vomiting. The presence of alkaloids within the species can lead to neurological disruptions such as dizziness or more extreme symptoms like convulsions. Furthermore, certain individuals may experience profound sensory distortions and hallucinations after exposure. These varied side effects underscore the dangerous nature of the plant to human health.
The main side effects this plant can have are shown in the list below.
- Nausea
- Vomiting
- Dizziness
- Convulsions
- Hallucinations
What herbs are paired with Tabernaemontana coronaria?
This plant, Tabernaemontana coronaria, pairs most effectively with aromatic herbs like basil, mint, and lemon balm to complement its delicate white blooms and subtle scent.
These herbal companions share similar moisture requirements, ensuring that the root systems of both the crown flower and the herbs thrive in the same soil conditions. Planting mint or basil at the base of the shrub can also serve as a functional groundcover that helps retain soil moisture. The contrasting foliage textures of these herbs provide a lush backdrop that enhances the visual appeal of the plant.
Together, these pairings create a cohesive garden bed that balances aesthetic beauty with practical horticultural needs.