Asimina triloba
Asimina triloba · Accepted scientific name
Scientific literature: Very Sparse (2 studies) · ★☆☆☆☆
Asimina triloba, commonly known as pawpaw, is a remarkable plant species that contains potent bioactive compounds such as acetogenins, annonacin, and (+)-syringaresinol. Research into its chemical profile reveals significant medicinal potential, particularly through its cytotoxic and antitumor activities against various cancer cells. Derived from preparations like EtOH extracts of the bark and stem, these components can act as 11B-HSD and 5-alpha-reductase inhibitors. The plant's diverse therapeutic applications also include analgesic and antitussive effects, making it a subject of intense pharmacological interest. Beyond its systemic benefits, studies have even explored its utility in addressing conditions involving fleas.
- Synonyms
- Orchidocarpum Arietinum · Porcelia Triloba · 7 more
- Common names
- Not available
- Family
- Annonaceae
- Distribution
- Not available
- Plant Parts
- Seed · Stem
Classification
Common Names
Asimina triloba is a unique species known by a variety of distinct common names across different regions. In many parts of North America, it is most frequently referred to as the American pawpaw. However, its tropical-looking fruit has also led to it being called the Indian-banana or the Indiana banana. Some international or regional variations even use names like Banano del nord or the German Dreilappige Papau. These diverse nicknames all point to the same fascinating plant that bridges the gap between temperate and tropical characteristics.
Sources: Catalogue of Life (COL)
Synonyms
Asimina triloba is a plant species that has been identified through various botanical classifications over time. Due to its complex taxonomic history, it is recognized by several synonyms including Annona pendula and Annona triloba. Researchers have also documented the plant under names such as Asimina campaniflora and Asimina conoidea. Furthermore, the name Asimina glabra has been used in different scientific contexts to describe this same organism. Understanding these various nomenclatural relationships is essential for accurate botanical identification and study.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Asimina triloba is a fascinating specimen that belongs to the vast kingdom Plantae. Within this biological realm, the plant is classified under the class Equisetopsida. It further belongs to the order Magnoliales, showcasing its evolutionary connections to ancient lineages. The species is nested within the specific genus Asimina, which highlights its unique botanical characteristics. Finally, it is a proud member of the Annonaceae family, grouping it with other diverse tropical and subtropical relatives.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Magnoliales |
| Family | Annonaceae |
| Genus | Asimina |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Asimina triloba is widely distributed across the diverse landscapes of Northern America. Its presence extends northward into Eastern Canada, specifically within the province of Ontario. The species also thrives throughout much of the North-Central United States, establishing itself in states like Illinois and Iowa. Furthermore, its range reaches southward into the central plains, covering regions such as Kansas and Missouri. This broad geographic spread highlights the plant's ability to adapt to various environmental conditions across the continent.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Asimina triloba grows in a tree-like form, providing a sturdy presence in any landscape. This self-supporting species is capable of reaching a maximum height of approximately 8.83 meters. Such impressive stature makes it a notable feature for those looking to incorporate larger woody plants into their gardens.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Asimina triloba contains several bioactive compounds that demonstrate significant therapeutic potential against cancer cells. Research has identified novel acetogenins, such as asitrocin and its derivatives, which exhibit potent antitumor activity. These compounds have shown remarkable selectivity when tested against human solid tumor cell lines, particularly those related to the prostate and pancreas. Furthermore, the bark of the plant yields trilobacin, a novel acetogenin recognized for its highly cytotoxic properties. Collectively, these findings highlight the plant's ability to produce substances capable of targeting and inhibiting various human tumor cell lines.
Compounds
Asimina triloba serves as a rich biological source for a variety of bioactive Annonaceous acetogenins. Scientific investigations have confirmed that this species contains several specific compounds, including the potent asimicin and bullatacin. Furthermore, researchers have successfully isolated the notable acetogenins known as annonacin and annonacin A from the plant. These diverse chemical constituents are often extracted from different parts of the tree, such as the twigs, seeds, and bark. Ultimately, the presence of these complex molecules highlights the significant pharmaceutical and pesticidal potential of the paw paw tree.
Conditions
Asimina triloba exhibits significant medicinal potential through its ability to treat various health conditions. Research indicates that its bioactive compounds, such as acetogenins, effectively treat the NCI human tumor cell line by demonstrating potent cytotoxicity. The plant also serves to treat the angiogenesis-stimulating activity of hypoxic T47D cells by inhibiting the HIF-1/VEGF signaling pathway. According to local medicinal surveys, the species is utilized to treat ailments as an analgesic, antiarthritic, and anti-infective agent. These diverse pharmacological activities highlight the plant's complex therapeutic profile.
Preparations
Asimina triloba is utilized as bark to isolate various bioactive compounds and cytotoxic acetogenins. This plant is also prepared as stem bark to facilitate the discovery of new adjacent bis-tetrahydrofuran ring acetogenins. Furthermore, Asimina triloba is prepared as an EtOH extract of the bark for fractionation and structural elucidation. These specific preparations allow for the identification of novel substances like trilobacin and bullatetrocin. Through these different forms, researchers can effectively study the chemical properties and biological activities of the species.
Parts used
Asimina triloba serves as a significant source of bioactive acetogenins found within various parts of its anatomy. Researchers have successfully isolated novel mono-tetrahydrofuran compounds, such as asitrocin, specifically from the seeds of this species. Furthermore, the stem bark of the plant has yielded new adjacent bis-tetrahydrofuran acetogenins through activity-directed fractionation. These chemical constituents, including bullatetrocin and 10-hydroxyasimicin, demonstrate potent bioactivity against several human solid tumor cell lines. Ultimately, the diverse chemical profiles found in both the seeds and stems highlight the medicinal potential of Asimina triloba.