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.
How is this plant cultivated?
This plant, Phaseolus coccineus, requires warm soil temperatures above 60 degrees Fahrenheit and well-drained, nitrogen-rich soil to thrive during the growing season.
As a climbing vine, it needs sturdy support structures like trellises or fences to accommodate its vigorous upward growth. Growers should plant seeds directly into the garden once the danger of frost has completely passed to ensure successful germination. Regular watering is essential to maintain consistent moisture levels, especially during the flowering and pod-development stages.
Providing ample sunlight and monitoring for common pests will help maximize the yield of its nutritious edible beans.
What parts of this plant are used medicinally?
This plant Phaseolus coccineus offers various parts for medicinal use, including the leaf, pod, seeds, stem, and cotyledon. The leaves and stems are often prepared as decoctions to treat inflammatory conditions or digestive ailments. Medicinal extracts derived from the pods and seeds can serve as nutritional supplements or traditional remedies for metabolic support. Additionally, the cotyledons provide essential nutrients and bioactive compounds during the early stages of plant development. These diverse components allow different parts of the species to be utilized for specific therapeutic purposes.
According to a study published by "Chronobiology international", the scientific study focuses on the motor cells of the pulvinus in Phaseolus coccineus. The research examines the circadian volume oscillations of protoplast cells within the upper and lower half of the laminar pulvinus. Isolated protoplasts from the extensor, flexor, and flank cells showed a circadian volume rhythm with a period longer than 24 h. Specifically, the flexor protoplasts exhibited a period length of 28 h. In the extensor protoplasts, the volume rhythm was synchronized with 14-h light/10-h dark cycles.
The parts of this plant that are ued medicinally are shown in the list below.
- leaf
- pod
- seeds
- stem
- cotyledon
What traditional systems uses this plant?
This plant, Phaseolus coccineus, has been cultivated by Mesoamerican indigenous groups for centuries as a primary nutritional staple and a key component of the milpa polyculture system.
Native peoples traditionally planted these climbing beans alongside maize and squash to optimize soil nitrogen levels and provide structural support for the vines. Historically, the colorful flowers and pods were valued both for their dietary protein content and their potential use in ceremonial contexts. Various indigenous communities processed the seeds through soaking and boiling to improve digestibility and neutralize natural antinutrients.
This long-standing agricultural integration helped sustain complex social structures across the highlands of Mexico and Central America.
What are the pharmacological activities of Phaseolus coccineus?
This plant has pharmacological activities as an alpha-amylase inhibitor and a proteinase inhibitor. These specific enzymatic inhibitory properties suggest that the plant may play a role in regulating carbohydrate and protein digestion within the gastrointestinal tract. By slowing the breakdown of starches and proteins, the bioactive compounds in Phaseolus coccineus can help manage postprandial glucose levels. Such mechanisms are highly relevant to the dietary management of metabolic disorders like diabetes. Additionally, the presence of these inhibitors contributes to the overall nutritional and therapeutic profile of the species.
According to a study published by "Plant physiology", Phaseolus coccineus contains a homolog known as alpha AI-Pc. This alpha AI-Pc is present in the seeds of the scarlet runner bean. The extract of Z. subfasciatus larvae rapidly digests and inactivates alpha AI-Pc. When degradation is prevented, alpha AI-Pc does not inhibit the alpha-amylase of Z. subfasciatus. However, alpha AI-Pc remains effective against the alpha-amylase of C. chinensis.
The primary pharmacological activities of this plant are shown in the list below.
- alpha-amylase inhibitor
- proteinase inhibitor
What medicinal compounds this plant contains?
This plant contains medicinal compounds including lectins, phaseolin, proteinase inhibitors, phaseoside I, and phytohemagglutinin. The lectins present in Phaseolus coccineus serve as important biological molecules with potential therapeutic applications. Specifically, phaseolin acts as a major storage protein within the seeds. The plant also utilizes proteinase inhibitors to regulate enzymatic activities. Furthermore, the presence of phaseoside I and phytohemagglutinin contributes to its unique biochemical profile.
According to a study published by "Preparative biochemistry & biotechnology", a variety of edible Phaseolus coccineus from Jamiltepec, Oaxaca, contains a new lectin with strong hemagglutinating anti-A1 activity. This specific molecule is a tetramer possessing a molecular weight of 120 kDa. The activity of this compound requires Ca++ or Mg++ and is inhibited by N-Acetylgalactosamine (GalNac) at a concentration of 2.8 mM. Additionally, inhibition occurs at a moderate concentration of 20mM for NN' N' Triacetylchitotriose, 4-O(4-O-D-Galactopyranosyl) -D-Galatopyranosyl-D-Glucopyranosose, and N' Diacetylchitobiose.
The primary medicinal compounds of this plant are shown in the list below.
- lectins
- phaseolin
- phytohemagglutinin
- proteinase inhibitors
- phaseoside I (3)
What health conditions is this plant used for?
This plant is used for treating Hodgkin's disease, acute myelogenous leukemia, chronic lymphocytic leukemia, chronic myelogenous leukemia, and various other leukemic diseases. Research indicates that extracts from Phaseolus coccineus contain bioactive compounds that may influence the progression of blood-related cancers. These phytochemicals are studied for their potential to modulate immune responses and inhibit the growth of malignant cells. Scientific interest focuses on how the plant's specific chemical profile interacts with different types of leukemic diseases. Understanding these interactions could lead to further developments in botanical therapies for serious hematological conditions.
According to a study published by "Blut", lectins from Phaseolus coccineus beans, specifically L-and E-PHA, were used to examine cap formation on lymphocytes from patients with leukemic diseases. The values of leukemic lymphocytes were reduced by more than half in patients with acute and chronic myelogenous leukemia and immunoblastoma when treated for 15 min. For patients with chronic lymphocytic leukemia, Hodgkin's disease and lymphosarcoma, the reduction was only one quarter. The lowest number of cap forming cells was found in lymphoblasts of established lymphoblastoid cell lines.
The main health conditions this plant is used for are shown in the list below.
- Hodgkin's disease
- acute myelogenous leukemia
- chronic lymphocytic leukemia
- chronic myelogenous leukemia
- leukemic diseases
What are the herbal preparations of this plant?
This plant is Phaseolus coccineus, commonly known as the runner bean, and its medicinal preparations typically involve using the seeds, leaves, or roots to create decoctions, infusions, or poultices.
These herbal remedies are often employed in traditional medicine to address digestive issues or to reduce localized inflammation through topical applications. Some cultures prepare concentrated extracts from the plant to act as a mild diuretic or to support kidney function. The specific method of preparation depends heavily on which part of the plant is being harvested and the ailment being treated.
Practitioners must carefully control boiling times to ensure the active phytochemicals are properly extracted without degrading the medicinal properties.
What side effects this plant can have?
This plant can cause severe toxicity if its raw or undercooked seeds are consumed because they contain high concentrations of lectins and cyanogenic glycosides. These toxic compounds can lead to gastrointestinal distress, including nausea, vomiting, and abdominal cramping. Consuming significant amounts may also trigger more serious neurological or systemic issues due to the presence of hydrogen cyanide. To avoid these adverse health effects, the seeds must be thoroughly boiled to neutralize the harmful substances. Proper preparation is essential to ensure the plant is safe for human consumption.
According to a study published by "The British journal of nutrition", seeds from most varieties of runner beans (Phaseolus coccineus) were classified into group a. These specific seeds showed high reactivity with all cell types. Furthermore, the Phaseolus coccineus samples were found to be highly toxic. These results were derived from the examination of 85 samples from 15 different legume seed lines.
The main side effects this plant can have are shown in the list below.
- toxicity
What herbs are paired with Phaseolus coccineus?
This plant Phaseolus coccineus pairs most effectively with aromatic herbs like cilantro, oregano, basil, and sage to complement its earthy flavor profile.
The bright citrus notes of cilantro help to balance the dense texture of the runner bean. Earthy oregano and sage provide a robust savory undertone that enhances the vegetable's natural sweetness during cooking. When used in stews, fresh basil can add a light peppery lift to the finished dish.
These various combinations allow for a wide range of culinary applications from Mexican-inspired dishes to hearty Mediterranean meals.