Annona glabra
Annona glabra · Accepted scientific name
Scientific literature: Very Sparse (2 studies) · ★☆☆☆☆
Annona glabra is a versatile plant species utilized for its significant medicinal and biological properties. Various parts of the plant, including the leaf, fruit, seed, and stem, are processed into preparations such as ethanolic extracts, fractionated ethanolic extracts, and essential oils. Research highlights its diverse activities, specifically its potential as an anticancer, antiviral, acidulant, and aldose-reductase inhibitor. These therapeutic benefits are driven by specialized chemicals like 27-hydroxybullatacin, annoglabayin, annomontacin, and bullatanocin. Consequently, the plant shows great promise in treating various conditions, ranging from cancer and diabetes to malaria and larvae-related issues.
- Synonyms
- Annona Laurifolia · Annona Palustris · 8 more
- Common names
- Not available
- Family
- Annonaceae
- Distribution
- Not available
- Plant Parts
- Leaf · Fruit
Classification
Common Names
Annona glabra is a versatile species known by a diverse array of regional monikers. Most frequently, it is referred to by its widely recognized English common name, the Alligator Apple. In different linguistic contexts, it has also been called the Alligatorapfel or the Bunya. Some local variations even include names such as the Bunta dog apple. These various identities highlight the plant's widespread presence across different cultures and territories.
Sources: Catalogue of Life (COL)
Synonyms
Annona glabra is a taxonomically complex species that shares close botanical relationships with several other recognized names. It is frequently identified by its synonyms, including the names Annona australis and Annona chrysocarpa. Furthermore, researchers often link it to Annona klainei, as well as the specific variety Annona klainei var. moandensis. The plant's botanical history also encompasses connections to Annona laurifolia. Understanding these overlapping classifications is essential for accurate scientific identification within the genus.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Annona glabra is a fascinating botanical specimen that belongs to the kingdom Plantae. Within this vast biological realm, the plant is classified under the class Equisetopsida. It further falls into the order Magnoliales, reflecting its evolutionary lineage. As a member of the genus Annona, it shares close ties with many other tropical species. Ultimately, its specific placement within the family Annonaceae highlights its unique place in the natural world.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Magnoliales |
| Family | Annonaceae |
| Genus | Annona |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Annona glabra is widely distributed across the diverse landscapes of West Tropical Africa. This plant can be found growing throughout the region, specifically spanning from the Gambia to Guinea. Its presence extends further into Guinea-Bissau, establishing a strong foothold in the local ecosystems. The species is also commonly documented within the borders of the Ivory Coast. Finally, its natural range reaches into Liberia, completing a significant stretch of its African distribution.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Annona glabra is a self-supporting plant that takes the form of a sturdy tree. This species typically reaches a maximum height of approximately 10.54 meters in its natural habitat. However, under certain conditions, it can grow even taller, reaching a peak height of up to 15 meters. These growth characteristics make it a prominent feature within its ecological landscape.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Annona glabra has long been utilized in conventional medicine to treat various human disorders, particularly those involving viruses and cancer. Recent scientific investigations into its hexane extract have confirmed significant cytotoxic activity against multiple human cancer cell lines, including lung and colon cells. Furthermore, the plant demonstrates promising antiviral properties, showing effectiveness against the Herpes simplex 1 virus and Hepatitis A virus. In silico studies suggest that key phytochemical components like limonene may play a crucial role in these antiviral effects. Ultimately, these findings validate the medicinal potential of Annona glabra as a valuable source of anticancer and antiviral substances for pharmaceutical development.
Compounds
Annona glabra serves as a rich source of diverse bioactive compounds that demonstrate significant therapeutic potential. Research has identified several key acetogenins within the plant, including 27-hydroxybullatacin, javoricin, and bullatanocin. Additionally, the plant contains the novel dimeric kaurane diterpenoid known as annoglabayin. Phytochemical analysis of hexane extracts also reveals the presence of limonene, a compound noted for its strong antiviral properties. Together, these various chemical constituents support the traditional medicinal use of the species in treating cancer and viral infections.
Conditions
Annona glabra exhibits high activity in 5-HT(1A) receptor binding studies. The plant's hexane extract demonstrates significant cytotoxic activity against the A-549 lung cancer cell line. It also shows significant cytotoxicity against CACO-2 colon cancer cells. Furthermore, the extract provides promising protective and virucidal activity against HSV1. Finally, Annona glabra exhibits mild protective antiviral activity against HAV.
Preparations
Annona glabra is prepared as fractionated ethanolic extracts of its leaves to isolate bioactive acetogenins like annoglaxin and annoglacins. The plant is also prepared as an essential oil, which has demonstrated bacteriostatic effects against methicillin-resistant Staphylococcus aureus. Researchers have utilized Annona glabra prepared as an ethanolic extract from the stem to show potent larvicidal activity against Aedes aegypti mosquitoes. Additionally, the plant is prepared as fruits to facilitate the phytochemical analysis and discovery of novel kaurane diterpenoids. Finally, Annona glabra is prepared as a hexane extract, which has been studied for its significant cytotoxic and antiviral properties against various cancer cell lines and viruses.
Parts used
Annona glabra is a versatile medicinal plant that contains various bioactive components distributed throughout its different structures. Research has demonstrated that its leaves serve as a rich source of acetogenins, such as annoglaxin, which exhibit significant potential against human cancer cell lines. The fruits of the plant are also highly productive, yielding unique kaurane diterpenoids like annoglabasin and annoglabayin. Furthermore, the seeds have proven to be exceptionally potent in larvicidal studies against Aedes aegypti mosquitoes. Finally, the stem of the plant has shown significant insecticidal activity, highlighting the therapeutic importance of nearly every part of this species.