Hyoscyamus niger
Hyoscyamus niger · Accepted scientific name
Scientific literature: Very Sparse (2 studies) · ★☆☆☆☆
Hyoscyamus niger, commonly known as black nightshade, is a versatile plant whose therapeutic potential is derived from its seeds, roots, flowers, and leaves. It contains key bioactive chemicals such as hyoscyamine and scopolamine, alongside essential elements like carbon and calcium. Through various preparations like extracts and hairy root treatments, the plant acts as a potent pharmacological agent with activities including 5-HT, 5-lipoxygenase, ACE, and 5-alpha-reductase inhibition. These properties allow it to be utilized in managing diverse conditions ranging from gastrointestinal disorders and depression to acting as an anxiolytic agent. Furthermore, ongoing research explores its relevance in modern medical contexts, including its potential role during COVID-19.
- Synonyms
- Hyoscyamus Niger Subsp. Auriculatus · Hyoscyamus Verviensis · 26 more
- Common names
- Not available
- Family
- Solanaceae
- Distribution
- Africa
- Plant Parts
- Seed · Root
Classification
Common Names
Hyoscyamus niger is a plant known by a diverse array of regional and cultural names across different languages. In Danish contexts, it is frequently referred to as Almindelig bulmeurt. Moving into other linguistic traditions, it carries the names Ban otu and Bela. It is also recognized under the identifiers Bele Du and Bilzekruid in various botanical discussions. These multiple common names reflect the widespread presence and historical significance of the species.
Sources: Catalogue of Life (COL)
Synonyms
Hyoscyamus niger is a botanical subject characterized by several complex taxonomic synonyms. Within scientific literature, this plant is occasionally identified by the alternative name Hyoscarpus niger. It is also closely associated with the synonym Hyoscyamus agrestis, which encompasses various distinct forms. Specifically, this includes the recognized variations Hyoscyamus agrestis var. integrifolius and Hyoscyamus agrestis var. pallidus. Furthermore, the name Hyoscyamus auriculatus serves as another synonym within its diverse botanical classification.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Hyoscyamus niger is a distinct botanical species belonging to the vast kingdom Plantae. Within this kingdom, it is classified under the class Equisetopsida, representing its evolutionary lineage. The plant is further organized into the order Solanales, which helps define its biological characteristics. It is a prominent member of the genus Hyoscyamus, a group known for its specific morphological traits. Ultimately, this plant is recognized as a specialized part of the Solanaceae family.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Solanales |
| Family | Solanaceae |
| Genus | Hyoscyamus |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Hyoscyamus niger exhibits a diverse geographical range that spans across several key regions of the African and Asian continents. In Africa, the species is primarily distributed throughout Northern Africa, with specific populations established in Algeria, Morocco, and Tunisia. Moving toward the Asian continent, its presence extends into the Asia-Temperate zone. Within this region, the plant can be found thriving in the Caucasus, particularly across the North Caucasus and Transcaucasus areas. This wide distribution highlights the plant's ability to adapt to the varied climates found across these distinct territories.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Hyoscyamus niger is a self-supporting herb that exhibits a versatile range of physical dimensions. Depending on its environment, this plant typically grows to a maximum height of approximately 1.15 meters. While it can reach these significant heights, it is also known to maintain a much more modest stature. In some instances, the plant may only reach a minimum height of 0.14 meters. Most observed specimens tend to settle into a more common minimum height of around 0.68 meters.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Hyoscyamus niger demonstrates significant pharmacological potential through its diverse therapeutic activities. Research indicates that the plant possesses potent spasmolytic properties, which allow it to relax smooth muscle in the gastrointestinal tract, airways, and urinary bladder. Furthermore, the crude extract of its seeds exhibits clear antisecretory effects, helping to prevent intestinal fluid accumulation. These biological actions are largely driven by a dual mechanism involving the blockade of muscarinic receptors and calcium channels. Ultimately, these combined properties provide a scientific basis for using the plant to treat respiratory disorders, bladder hyperactivity, and gastrointestinal distress.
Compounds
Hyoscyamus niger is a significant medicinal plant recognized for its complex chemical profile. Research into its roots has confirmed that the species contains the important tropane alkaloid scopolamine. Beyond these alkaloids, the seeds of the plant serve as a rich source of various nonalkaloidal components. Specifically, chemical analysis has identified the presence of beta-sitosterol and daucosterol within these seed structures. Furthermore, the plant contains cannabisin D and cannabisin G, compounds that have demonstrated moderate cytotoxicity in certain cancer cell studies.
Conditions
Hyoscyamus niger demonstrates significant antimicrobial properties by inhibiting Gram-positive bacteria, Gram-negative bacteria, and a fungus. Research also evaluates the potential of this plant as a remedy for forestalling the progression of Parkinson's disease. While some studies investigate herbal combinations for COVID-19, Hyoscyamus niger is specifically noted for its bioactive potential in treating neurodegenerative conditions. Its non-alkaloidal constituents from seeds have shown marked inhibitory activity against various microorganisms. These diverse biological activities highlight the plant's complex role in both antimicrobial and neurological medicinal studies.
Preparations
Hyoscyamus niger is prepared as extracts to test for various biological activities, such as cytotoxicity and effects on the central nervous system. This plant is also prepared as Sarpagandha Ghanvati, a classical Ayurvedic polyherbal formulation used to treat conditions like insomnia and anxiety. Different morphological parts of the species are utilized, as Hyoscyamus niger is prepared as flowers, leaves, or seeds for medicinal purposes. Additionally, Hyoscyamus niger is prepared as hairy roots to study the targeted expression of hemoglobin for increasing tropane alkaloid production. These diverse preparations highlight the plant's versatility in both traditional medicine and modern biotechnological research.
Parts used
Hyoscyamus niger is a versatile medicinal plant whose various components are utilized for their therapeutic properties. Researchers have identified significant chemical profiles within the seeds, which contain lignanamides and other nonalkaloidal constituents. The roots of the plant serve as a critical source for extracting valuable tropane alkaloids like hyoscyamine and scopolamine. Additionally, the flowers and leaves are integral parts used by local populations to treat a diverse range of diseases. Scientific analysis of these different plant parts, including their elemental compositions, continues to enhance our understanding of the species' medicinal potential.