Alstonia macrophylla
What's the taxonomical classification of Alstonia macrophylla?
Alstonia macrophylla belongs to the kingdom Plantae and is categorized under the phylum Streptophyta. Within this lineage, it is classified in the class Equisetopsida and the subclass Magnoliidae. Moving down the taxonomic hierarchy, the plant is placed in the order Gentianaales and falls under the family Apocynaceae. Finally, it is identified by the genus Alstonia, with its specific designation being the species macrophylla.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Gentianales |
| Family | Apocynaceae |
| Genus | Alstonia |
| Species | macrophylla |
What are the morphological characteristics of this plant?
Alstonia macrophylla has large, simple, elliptical to oblong leaves that typically measure between 15 and 30 centimeters in length and are arranged oppositely on its woody stems. The leaf margins are usually entire or slightly wavy, while the surfaces can exhibit a smooth or slightly textured feel depending on the specimen. Its stems are characterized by a woody structure that supports a shrubby or small tree-like growth habit. The plant produces small, inconspicuous flowers that are often clustered in the leaf axils. These morphological features collectively distinguish the species within its specific botanical family and environment.
What is the geographical distribution of this plant?
This plant is native to the tropical rainforest regions of Southeast Asia, specifically occurring in parts of Malaysia, Indonesia, and Thailand. It thrives in humid, low-lying areas where dense canopy cover provides necessary shade. Its presence is typically restricted to moist forest floors within these equatorial climates. The species follows a fragmented distribution pattern dictated by the availability of specific microclimates and high rainfall levels. Localized populations are often found in undisturbed primary forests where soil moisture remains consistent year-round.
How is this plant cultivated?
This plant requires a tropical environment with consistent humidity, bright indirect sunlight, and well-draining organic soil to thrive.
You should maintain a warm temperature range between 65 and 80 degrees Fahrenheit to prevent leaf drop. Watering should be frequent enough to keep the substrate moist but never waterlogged, as stagnant water can lead to root rot. Providing supplemental misting or a pebble tray helps mimic its natural rainforest habitat.
Monitoring for pests like spider mites is essential during the growing season to ensure healthy foliage development.
What parts of this plant are used medicinally?
This plant Alstoniia macrophylla utilizes its leaves, roots, bark, and stems for various medicinal applications in traditional healing practices. The leaves are frequently prepared as infusions or poultices to treat inflammatory conditions and skin ailments. Extracts from the roots and bark are often decocted to address digestive issues or to act as a tonic for the body. Additionally, the stems can be processed to create topical treatments for localized pain. Each of these distinct parts provides specific bioactive compounds necessary for these therapeutic uses.
According to a study published by "Contraception", the leaf extract of Alstonia macrophylla Wall ex A. DC is used medicinally for its potential as a topical vaginal contraceptive. The methanol extract at 600 microg mL-1 and fraction B at 100 microg mL-1 concentrations showed marked inhibition of sperm forward motility in goat and human species. Approximately 60-80% of goat spermatozoa lost their forward motility when treated with 600 microg mL-1 of the methanol extract or 100 microg mL-1 of fraction B. At a 100 microg mL-1 concentration, fraction B showed a 90% loss of forward motility in human spermatozoa. Furthermore, fraction B at a 400 microg mL-1 concentration showed complete inhibition of sperm forward motility at 0 min.
The parts of this plant that are ued medicinally are shown in the list below.
- leaf
- root bark
- stems
What traditional systems uses this plant?
This plant, Alsoniatonia macrophylla, is traditionally utilized by indigenous communities in tropical regions to treat various ailments such as skin infections, stomach aches, and inflammatory conditions.
Practitioners often prepare decoctions from the bark or leaves to serve as medicinal tonics or topical washes. The large, broad leaves are sometimes used in poultices to soothe localized swelling or pain. Historical records suggest that these botanical applications are deeply rooted in the ethnobotanical knowledge passed down through generations.
These customary practices highlight the plant's significance within local folk medicine frameworks.
What are the pharmacological activities of Alstonia macrophylla?
This plant has demonstrated significant pharmacological potential through its anticancer, antimalarial, antimicrobial, antipyrretic, and cytotoxic activities. Researchers have identified specific bioactive compounds within the leaves and extracts that inhibit the growth of various pathogens. Its cytotoxic properties allow it to target and destroy malignant cell lines, which contributes to its promising anticancer profile. Furthermore, the plant's ability to reduce fever makes it a useful subject for studying antipyrretic effects. These diverse biological actions suggest that Alstona macrophylla could serve as a valuable source for developing new therapeutic drugs.
According to a study published by "Journal of ethnopharmacology", Alstonia macrophylla is utilized in conventional medicines across Thailand, Malaysia and Philippines. This plant species acts as a general tonic, aphrodisiac, anticholeric, antidysentery, antipyretic, emmenagogue, and vulnerary agent. In India, Alstonia macrophylla is employed as a substitute for Alstonia scholaris in various herbal pharmaceutical preparations. Both species are rich in different types of bioactive alkaloids and have reported broad spectrum in vitro and in vivo biological and pharmacological activities. Among these activities, the antimicrobial and anticancer activities were reported as promising.
The primary pharmacological activities of this plant are shown in the list below.
- anticancer
- antimalarial
- antimicrobial
- antiplasmodial
- antipyretic
What medicinal compounds this plant contains?
This plant contains the specific medicinal compounds 16-hydroxyalstonal, 16-hydroxyalstonisine, macralstonine, alstomaline, and alstophyllal. These bioactive molecules are categorized as unique secondary metabolites within the species. Researchers study these specific chemical structures to understand their potential pharmacological activities. Each compound contributes to the overall complex chemical profile that defines the plant's therapeutic properties. Identifying these elements is essential for developing new treatments derived from botanical sources.
According to a study published by "Fitoterapia", the ethanolic extract from the stems of Alstonia macrophylla Wall. ex G. Don showed a significant inhibitory effect on acetylcholinesterase. Four specific compounds were isolated from the plant, including the bisindole alkaloid macralstoniine (1), the new bisindole alkaloid thungfaine (2), the secoiridoiid glycoside swerosiide (3), and the new secoiridoiid glycoside naresuanoside (4). Compound 4 demonstrated moderate inhibitory effects on both acetylcholinesterase and butyrylcholinesterase. Furthermore, compound 4 inhibited cell growth on the human androgen-sensitive prostate cancer cell line LNCaP. This effect on the LNCaP cell line occurred without any effect on the viability of human foreskin fibroblast cells HF.
The primary medicinal compounds of this plant are shown in the list below.
- 16-hydroxyalstonal
- 16-hydroxyalstonisine
- macralstonine
- alstomaline
- alstophyllal
What health conditions is this plant used for?
This plant is used for treating anticancer, antimicrobial, antipyretic, aphrodisiac, and emmenagogue conditions. Its medicinal properties allow it to combat infections by inhibiting the growth of harmful microorganisms. The plant also functions as a fever reducer to help stabilize body temperature during illness. It is utilized to stimulate menstrual flow and regulate reproductive cycles in various traditional practices. Furthermore, it is believed to act as a substance that increases sexual desire and libido.
According to a study published by "Journal of ethnopharmacology", Alstonia macrophylla is used in conventional medicines in 3 countries, which are Thailand, Malaysia and Philippines. The plant serves as a general tonic, aphrodisiac, anticholeric, antidysentery, antipyretic, emmenaogogue, and vulnerary agent. In India, this species is used as a substitute for Alstonia scholaris in various herbal pharmaceutical preparations. Both species are rich in different types of bioactive alkaloids and have reported antimicrobial and anticancer activities.
The main health conditions this plant is used for are shown in the list below.
- anticancer
- antiholeic
- antidysentery
- antimicrobial
- antipyretic
What are the herbal preparations of this plant?
This plant is Alstona macrophyllia, which is utilized in medicinal herbal preparations through the use of methanol extracts, methanol-aqueous extracts, and n-butanol fractions. Researchers employ these different solvent systems to isolate specific bioactive compounds responsible for its therapeutic properties. The methanol extracts are commonly used to capture a broad range of lipophilic constituents from the plant material. By adding water to the process, methanol-aqueous extracts can target a wider polarity spectrum of phytochemicals. Finally, n-butanol fractions are specifically applied to separate more polar components during the purification process.
According to a study published by "Planta medica", methanol extracts of the root bark of Alstonia macrophylla collected from Thailand exhibited significant cytotoxic activity against two human lung cancer cell lines, MOR-P and COR-L23. Activity-directed fractionation of the plant led to the isolation of a novel indole alkaloid, O-methylmacralstonine, alongside four known alkaloids: talcarpine, villalstonine, pleiocarpamine, and macralstonine. The bisindole villalstonine was found to possess pronounced activity on both cell lines with an IC50 value of less than 5 muM. However, villalstonine was approximately 10(3) times less potent than vinblastine sulphate. In contrast, the monomeric alkaloid talcarpine was found to be inactive, while pleiocarpamine, O-methylmacralstonine, and macralstonine were all considerably less active than villalstonine.
The main herbal preparations of this plant are shown in the list below.
- Methanol extracts
- methanol-aqueous extract
- n-butanol fractions
What side effects this plant can have?
This plant can cause reproductive toxicity in males through the specific inhibition of sperm motility. Research indicates that bioactive compounds within the leaves may impair the movement and swimming ability of sperm cells. This reduction in motility can lead to decreased fertility and potential complications in reproductive health. Other potential side effects may involve general physiological disruptions if the plant is consumed in large quantities. Monitoring the toxicological profile of this species is essential for understanding its impact on human biological systems.
According to a study published by "Contraception", the methanol extract (ME) and n-butanol fractions of Alstonia macrophylla Wall ex A. DC leaves demonstrate potent sperm motility-inhibiting activity. When treated with 600 microg mL-1 of ME or 100 microg mL-1 of fraction B, approximately 60-80% of goat spermatozoa lost their forward motility. In human spermatozoa, fraction B caused a 90% loss of forward motility at a 100 microg mL-1 concentration. Furthermore, fraction B at a 400 microg mL-1 concentration resulted in complete inhibition of sperm forward motility at 0 min. These results suggest that fraction B, which contains ursolic acid, has the potential to serve as a topical vaginal contraceptive.
The main side effects this plant can have are shown in the list below.
- sperm motility inhibition
What herbs are paired with Alstonia macrophylla?
This plant, Alstonia macrophylla, pairs most effectively with aromatic herbs such as rosemary, thyme, and sage to enhance its earthy profile.
These pairings work because the woody notes of the herbs complement the plant's large, textured leaves. When used in culinary or medicinal infusions, adding mint can also provide a refreshing contrast to its dense flavor. The combination of these specific herbs helps to balance the subtle bitterness often found in the foliage.
Such blends are frequently utilized in traditional preparations to create a more complex sensory experience.