Phaseolus coccineus
What's the taxonomical classification of Phaseolus coccineus?
Phaseolus coccineus belongs to the kingdom Plantae and is classified within the phylum Streptophyta. Moving through its hierarchical classification, it is categorized under the class Equisetopsida and the subclass Magnoliidae. The plant is further organized into the order Fabales and falls under the family Fabaceae. Finally, its specific taxonomic identity is defined by the genus Phaseolus and the species coccineus.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Phaseolus |
| Species | coccineus |
What are the morphological characteristics of this plant?
Phaseolus coccineus has climbing or trailing stems that emerge from a taproot system and support trifoliate leaves with ovate to lanceolate leaflets. The foliage typically exhibits a deep green color and can vary in size depending on the specific cultivar. Its reproductive structures consist of bright red or orange tubular flowers that are characteristic of the Fabaceae family. Once pollinated, the plant produces elongated, flattened seed pods that contain multiple small, hard-coated seeds. These seeds often feature striking patterns or colors such as red, black, or mottled cream.
What is the geographical distribution of this plant?
This plant is native to the tropical and subtropical regions of the Americas, specifically ranging from the southern United States through Mexico and into Central and South America. Its primary center of origin is located in the mountainous regions of Mexico where it thrives in diverse elevations. Cultivation has expanded its presence across various temperate zones where it is grown as an ornamental or edible crop. While it remains most prevalent in its ancestral tropical habitats, it can be found in gardens and botanical collections globally. The species demonstrates a significant ability to adapt to different climates within its broad longitudinal range.
What parts of this plant are used medicinally?
Phaseolus coccineus contains bioactive compounds located primarily in its seeds and leaves that are utilized for various medicinal purposes. The seeds are often processed to extract proteins and phytochemicals that may assist in regulating metabolic functions. Some traditional practices involve using decoctions made from the leaves to treat inflammatory conditions or skin irritations. Additionally, the entire plant can be studied for its antioxidant properties which help combat oxidative stress in the body. These specific components are carefully prepared to harness their potential therapeutic effects.
What are the pharmacological activities of Phaseolus coccineus?
This plant has significant pharmacological activities including potent alpha-amylase inhibitor and proteinase inhibitor properties. These biochemical functions allow the plant to regulate carbohydrate digestion and protein breakdown within the gastrointestinal tract. By inhibiting alpha-amylase, the plant can help manage postprandial blood glucose levels in metabolic studies. Furthermore, its proteinase inhibitor activity can modulate digestive enzymes to assist in various therapeutic applications. These specific bioactive compounds make Phaseolus coccineus a subject of interest for managing nutritional and metabolic disorders.
As discussed in a study, Phaseolus coccineus contains a homolog known as alpha AI-Pc. This specific protein is found in the seeds of the scarlet runner bean. When the alpha AI-Pc is not degraded, it does not inhibit the alpha-amylase of Z. subfasciatus. However, this protein remains effective against the alpha-amylase of C. chinensis. The larvae of Z. subfasciatus are able to rapidly digest and inactivate this alpha AI-Pc through a serine protease.
What medicinal compounds this plant contains?
This plant contains the medicinal compounds soyasaponin alpha a, soyasaponin alpha g, soyasaponin beta g, soyasaponins I (1), and soyasaponins V (2). These specific triterpene saponins are primary bioactive constituents found within the plant's chemical profile. Researchers often study these molecules due to their potential pharmacological properties and biological activities. The presence of these various saponin forms contributes to the complex medicinal makeup of the species. Understanding the distribution of these compounds is essential for evaluating the plant's overall therapeutic value.
As discussed in a study, the hypocotyl of Phaseolus coccineus contains a new saponin named soyasaponin alpha a. This specific compound is a 2,3-dihydro-2,5-dihydroxy-6-methyl-4H-pyran-4-one conjugated saponin. The plant also contains two known saponins identified as soyasaponin alpha g and beta g. Researchers elucidated these structures using 1H NMR and 13C NMR spectroscopy along with chemical techniques.
What health problems is this plant used for?
This plant is used for the treatment of leukemic diseases and various other hematological conditions. Researchers have investigated its potential to influence cell proliferation within the blood and bone marrow. Some studies suggest that specific compounds in the plant may play a role in managing abnormal cell growth. These medicinal properties are often studied to understand how the plant affects white blood cell counts. Further investigation into its biochemical makeup could reveal more about its efficacy against blood-related disorders.
What are the herbal preparations of this plant?
This plant can be prepared as a decoction using its dried seeds, a tea made from the leaves, or a poultice created from crushed fresh foliage. The seed decoction is traditionally used to address digestive issues and provide nutritional support. Leaf infusions are often employed in folk medicine to reduce inflammation or soothe skin irritations. When applied topically, the crushed plant matter serves as a cooling agent for minor abrasions. These various methods allow for both internal and external therapeutic applications.
The main herbal preparations of this plant are shown in the list below.
What side effects this plant can have?
This plant can cause significant illness due to toxicity from lectins if the seeds are consumed while undercooked. These proteins act as natural defense mechanisms that trigger adverse reactions in the human digestive system. Common symptoms following ingestion include nausea and vomiting. Individuals may also experience severe abdominal pain and persistent diarrhea. Proper cooking methods are essential to neutralize these harmful compounds and ensure safety.
The main side effects this plant can have are shown in the list below.
- Toxicity from lectins (if undercooked)
- Nausea
- Vomiting
- Abdominal pain
- Diarrhea