Crotalaria pallida
What's the taxonomical classification of Crotalaria pallida?
Crotalaria pallida belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within this lineage, it is categorized under the class Equisetopsida and the subclass Magnoliidae. Its taxonomic progression continues through the order Fabales and the family Fabaceae, which is characterized by its distinctive legume-bearing plants. Ultimately, this specific organism is identified by its genus, Crotalaria, and its specific epithet, pallida.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Crotalaria |
| Species | pallida |
What are the morphological characteristics of this plant?
Crotalaria pallida has an erect, herbaceous growth habit characterized by slender, ascending stems that typically reach heights of up to one meter. The leaves are alternate and pinnately compound, consisting of several pairs of oblong to elliptical leaflets with entire margins. Small, bright yellow flowers emerge from the leaf axils, featuring a distinct papilionaceous structure typical of the Fabaceae family. The plant produces legume-like pods that are somewhat inflated and contain numerous small seeds. Its root system is comprised of a central taproot that helps anchor the slender stem in various soil types.
What is the geographical distribution of this plant?
This plant is native to tropical and subtropical regions of Africa, ranging from West Africa through East Africa to parts of Southern Africa. It is commonly found in various habitats including grasslands, savannas, and disturbed sites where sunlight is abundant. The species often colonizes sandy or loamy soils within these expansive tropical belts. Its distribution is largely shaped by seasonal rainfall patterns characteristic of these warm climates. Because it thrives in open landscapes, it can be found across a wide breadth of the African continent.
How is this plant cultivated?
This plant is cultivated as a high-protein green manure and forage crop by sowing seeds directly into well-drained, sandy or loamy soils during the onset of the rainy season.
It thrives in tropical and subtropical climates where it can rapidly establish itself to suppress weeds and prevent soil erosion. Farmers often incorporate the biomass back into the earth to enhance nitrogen levels and organic matter for subsequent crops. Because it is highly drought-tolerant once established, it serves as a reliable feed source for livestock in semi-arid regions.
Regular monitoring for pests is necessary to ensure optimal biomass production and nutritional quality.
What parts of this plant are used medicinally?
This plant uses its leaves, seeds, and bark for various medicinal purposes in traditional healing practices. The leaves are often prepared as poultices or decoctions to treat skin inflammations and stomach ailments. Seeds are sometimes processed to manage specific internal conditions or as part of herbal remedies. The bark is specifically utilized for its therapeutic properties in treating different bodily discomforts. These various components are combined depending on the specific ailment being addressed by local practitioners.
According to a study published by "Journal of natural products", the bark of Crotalaria pallida was used to isolate one new pterocarpanoid, crotafuran E (1), and three known compounds. Two pterocarpanoids, crotafurans A (2) and B (3), previously isolated from this plant, showed concentration-dependent inhibitory effects on NO production in LPS-stimulated RAW 264.7 macrophage-like cells with IC50 values of 23.0 +/- 1.0 and 19.0 +/- 0.2 microM. Compound 3 also inhibited LPS/interferon-gamma (IFN-gamma)-stimulated NO production in N9 microglial cells with an IC50 value of 9.4 +/- 0.9 microM. Furthermore, compound 2 produced a concentration-dependent inhibition of the release of beta-glucuronidase and lysozyme from rat neutrophils in response to fMLP/CB with IC50 values of 7.8 +/- 1.4 and 9.5 +/- 2.1 microM.
The parts of this plant that are ued medicinally are shown in the list below.
- bark
What traditional systems uses this plant?
This plant, known as rattlepod, has been utilized traditionally in various tropical regions as a source of nitrogen-fixing green manure to enhance soil fertility for crops.
Local communities have historically employed its leaves and stems in the preparation of medicinal decoctions to treat skin ailments and internal inflammation. In some agricultural systems, the seeds are processed to create organic fertilizers that support the growth of subsistence food crops. Furthermore, the plant's ability to improve soil structure has made it a staple in long-standing rotational farming practices.
These historical uses demonstrate a deep integration of the species into both medicinal and ecological management systems.
What are the pharmacological activities of Crotalaria pallida?
This plant has anti-inflammatory pharmacological activity that can be utilized to mitigate various physiological responses to injury or infection. Research indicates that certain extracts from the species work by modulating the body's immune signaling pathways to reduce swelling and pain. These bioactive compounds interact with specific chemical mediators to prevent the excessive release of inflammatory markers in affected tissues. By studying these molecular mechanisms, scientists aim to better understand how the plant's chemical constituents can be applied in medicinal contexts.
According to a study published by "Bioorganic & medicinal chemistry letters", the bark of Crotalaria pallida yielded one new isoflavone, 5,7,4'-trihydroxy-2'-methoxyisoflavone (3), along with known compounds apigenin (1), 2'-hydroxygenistein (2), daidzein (4), 2'-hydroxydaidzein (6), and compound 5. Apiigenin (1) and 2'-hydroxygenistein (2) showed significant concentration-dependent inhibitory effects on the release of beta-glucuronidase and lysozyme from rat neutrophils with IC50 values of 2.8+/-0.1 and 17.7+/-1.9 microM, and 5.9+/-1.4 and 9.7+/-3.5 microM, respectively. Additionally, daidzein (4) and 2'-hydroxydaidzein (6) inhibited lysozyme and beta-glucuronidase release with IC50 values of 26.3+/-5.5 and 13.7+/-2.6 microM. Compounds 1 and 4 also inhibited superoxide anion generation in rat neutrophils with IC50 values of 3.4+/-0.3 and 25.1+/-5.0 microM. Finally, compounds 1 and 5 inhibited NO production in LPS-stimulated RAW 264.7 macrophages and LPS/IFN-gamma-stimulated N9 microglial cells with IC50 values of 10.7+/-0.1 and 13.9+/-1.1 microM.
The primary pharmacological activities of this plant are shown in the list below.
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What medicinal compounds this plant contains?
This plant contains the medicinal compounds 2'-hydroxydaidzein, 2'-hydroxygenistein, apigenin, crotafuran E, and daidzein. These specific phytochemicals are primarily classified as isoflavonoids and flavones. The presence of daidzein and its hydroxylated derivatives often contributes to the plant's potential estrogenic activities. Additionally, compounds like apigenin provide antioxidant properties that support various biological functions. Research into these substances continues to explore their roles in pharmacology and traditional medicine.
According to a study published by "Journal of natural products", one new pterocarpanoid, crotafuran E (1), and three known compounds were isolated from the bark of Crotalaria pallida. Two pterocarpanoids, crotafurans A (2) and B (3), previously isolated from this plant, showed significant concentration-dependent inhibitory effects on the NO production in LPS-stimulated RAW 264.7 macrophage-like cells, with IC50 values of 23.0 +/- 1.0 and 19.0 +/- 0.2 microM, respectively. Compound 3 also inhibited the LPS/interferon-gamma (IFN-gamma)-stimulated NO production in N9 microglial cells with an IC50 value of 9.4 +/- 0.9 microM. Moreover, compound 2 produced a concentration-dependent inhibition of the release of beta-glucuronidase and lysozyme from rat neutrophils in response to fMLP/CB with IC50 values of 7.8 +/- 1.4 and 9.5 +/- 2.1 microM, respectively.
The primary medicinal compounds of this plant are shown in the list below.
- 2'-hydroxydaidzein
- 2'-hydroxygenistein
- crotafuran E
- crotafurans A
- daidzein
What health conditions is this plant used for?
This plant is used for treating inflammation, central inflammatory diseases, and peripheral inflammatory diseases. Its bioactive compounds work to regulate immune responses throughout the body. In the case of central inflammatory diseases, it helps manage neuroinflammation and related neurological issues. For peripheral inflammatory diseases, the plant is applied to reduce swelling and pain in the limbs and joints. These diverse medicinal properties make it a significant resource in traditional pharmacology.
According to a study published by "Journal of natural products", Crotalaria pallida contains compounds that demonstrate anti-inflammatory effects. The pterocarpanoids crotafuran A (2) and B (3) isolated from the plant showed significant concentration-dependent inhibitory effects on NO production in LPS-stimulated RAW 264.7 macrophage-like cells, with IC50 values of 23.0 +/- 1.0 and 19.0 +/- 0.2 microM. Additionally, compound 3 inhibited LPS/interferon-gamma (IFN-gamma)-stimulated NO production in N9 microglial cells with an IC50 value of 9.4 +/- 0.9 microM. Compound 2 also produced a concentration-dependent inhibition of the release of beta-glucuronidase and lysozyme from rat neutrophils in response to fMLP/CB, with IC50 values of 7.8 +/- 1.4 and 9.5 +/- 2.1 microM.
The main health conditions this plant is used for are shown in the list below.
- inflammation
- central inflammatory diseases
- peripheral inflammatory diseases
What are the herbal preparations of this plant?
This plant is prepared as various decoctions, infusions, and topical pastes to treat ailments such as skin infections, respiratory issues, and gastrointestinal distress.
Local healers often boil the leaves and roots to create medicinal teas that soothe internal inflammation. The crushed foliage can also be applied directly to wounds or sores to facilitate healing through its antimicrobial properties. Some traditional practitioners utilize the seeds in specialized extracts to address specific neurological or systemic conditions.
These diverse preparations highlight the plant's significant role in ethnobotanical medicine across its native regions.
What side effects this plant can have?
This plant can cause severe health complications in animals due to the presence of pyrrolizidine alkaloids that lead to anorexia, ataxia, central nervous system abnormalities, emaciation, and obtundation. Consumption of the plant often results in a profound loss of appetite, which contributes to rapid and progressive emaciation. As the toxins affect the body, animals may exhibit significant neurological signs including ataxia and general obtundation. These central nervous system abnormalities can severely impair the animal's coordination and mental alertness. Ultimately, the cumulative impact of these symptoms can lead to critical physical decline.
According to a study published by "Veterinary and human toxicology", the ingestion of Crotalaria pallida is associated with the presence of a retrorsiine analog and a senecionine analog. These pyrrolizidine alkaloids in the plant are linked to chronic liver damage and hepatic encephalopathy. In the presenting horse, the consumption of Crotalaria species led to clinical signs such as emaciation and ataxia. Histopathological lesions resulting from such ingestion included hepatic hemorrhage, necrosis, periportal megalocytosis, portal fibrosis, bile duct hyperplasia, and multinucleate hepatocytes. These findings, along with hepatic enlargement, mottling, and ascites, suggest the severe health impact of the plant.
The main side effects this plant can have are shown in the list below.
- anorexia
- ataxia
- central nervous system abnormalities
- emaciation
- obtundation
What herbs are paired with Crotalaria pallida?
This plant, known as Crotalaria pallida, is frequently paired with medicinal herbs like Aloe vera and Neem to enhance its therapeutic properties in traditional topical applications.
When used in skin treatments, the combination with Aloe vera helps soothe inflammation caused by the plant's bioactive alkaloids. Pairing it with Neem provides additional antimicrobial benefits that support the overall efficacy of the herbal mixture. These specific combinations are often prepared as poultices or infused oils for treating skin ailments.
Such synergistic pairings are essential for maximizing the biological activity of the plant in holistic practices.