Isodon rubescens
What's the taxonomical classification of Isodon rubescens?
Isodon rubescens belongs to the kingdom Plantae and is classified within the phylum Streptophyta. As a member of the class Equisetopsida and the subclass Magnoliidae, this plant is further organized under the order Lamiales. It falls within the family Lamiaceae, specifically categorized under the genus Isodon, with its unique identification completed by the specific epithet rubescens.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Lamiales |
| Family | Lamiaceae |
| Genus | Isodon |
| Species | rubescens |
What are the morphological characteristics of this plant?
Isodon rubescens has pinnately compound leaves typically featuring 7 to 13 lanceolate leaflets with serrated margins and a distinctively asymmetrical base. The tree reaches heights of up to 30 meters and is characterized by a straight trunk with grayish-brown bark that develops shallow longitudinal furrows as it matures. Its flowers are small, greenish, and arranged in drooping panicles that emerge during the spring season. The fruit consists of small, dry, winged samaras that facilitate wind dispersal from the tree canopy. The wood is exceptionally dense and heavy, often displaying a fine grain and a reddish-brown hue.
What is the geographical distribution of this plant?
This plant is native to a specific range of eastern North America, spanning from southeastern Canada through the eastern United States. Its distribution primarily follows the well-watered lowlands and river valleys of the Appalachian Mountains and the Mississippi River basin. You can find populations stretching from southern Ontario and Quebec down to the Gulf Coast states. It also occupies much of the Midwest, extending from the Great Lakes region toward the Atlantic coast. This species thrives in moist, bottomland habitats within these various regional territories.
How is this plant cultivated?
This plant, known as canarywood, thrives in moist, well-drained soils within warm temperate to subtropical climates where it receives partial to full sunlight.
Growers should ensure the soil maintains consistent moisture levels to mimic its natural riverbank habitat. Providing organic mulch around the base of the sapling helps regulate soil temperature and retain necessary humidity. While the species is relatively hardy once established, protecting young plants from extreme frost is crucial for survival.
Periodic pruning can encourage a more robust structure and healthier foliage development.
What parts of this plant are used medicinally?
This plant, Isodon rubescens, utilizes its aerial parts, including the flowers, leaves, and stems, as well as its roots for various medicinal applications. The bark from the stems and the root system are traditionally harvested to prepare decoctions used for their physiological effects. Within the aerial parts, the leaves and flowers contribute to the overall chemical profile of the plant used in herbal remedies. These various components are often processed together to capture the full spectrum of the species' potential properties. Practitioners focus on these specific elements to extract the active constituents necessary for traditional healing practices.
According to a study published by "Phytochemistry", seven previously undescribed 7,20-epoxy-ent-kaurane diterpenoids named isojiangrubesin A-G and seventeen known ones were isolated from the aerial parts of Isodon rubescens. These compounds were evaluated for in vitro cytotoxicity against 5 human tumor cell lines, specifically HL-60, SMMC-7721, A-549, MCF-7, and SW480. Four isolates demonstrated significant inhibitory ability against all 5 cell lines with IC50 values ranging from 0.5 to 6.5 μM. Furthermore, these isolates strongly inhibited NO production in LPS-stimulated RAW264.7 cells.
The parts of this plant that are ued medicinally are shown in the list below.
- aerial parts
- flowers
- leaf
- roots
- stems
What traditional systems uses this plant?
This plant, known as Osage orange, has been utilized in various traditional systems for its chemical properties, although it is not a primary component in Traditional Chinese Medicine. Historically, various indigenous cultures in North America used the wood for crafting durable tools and the fruit for making natural dyes. The presence of acetogenins in the tree makes it a subject of interest for its potential bioactive effects in ethnobotanical research. While it lacks a deep history in ancient Asian herbalism, its local utility in Western folk practices remains significant.
According to a study published by "Journal of ethnopharmacology", Isodon rubescens (Hemsl.) Hara is a traditional Chinese medicinal herb. This plant demonstrates tumor inhibiting properties and therapeutic efficacy in treating esophageal squamous cell carcinoma (ESCC). The research utilized a targeted metabolomics method analyzing 74 core metabolites in pathways such as central carbon, pyruvate, choline, and retinol metabolism. The study confirmed that I. rubescens has heterogeneous effects on the well-differentiated KYSE-30 and poorly differentiated KYSE-150 cell lines. Molecular docking identified strong binding affinity between the enzyme citrate synthase and 4 specific compounds: oridonin, quercetin, isorhamnetin, and ponicidin.
The hystorical systems that uses this plant are shown in the list below.
- Traditional Chinese Medicine
What are the pharmacological activities of Isodon rubescens?
This plant has demonstrated significant pharmacological potential through its anti-cancer, anti-inflammatory, anti-tumor, antimicrobial, and cytotoxic activities. Researchers have identified specific bioactive compounds within Isodon rubescens that exhibit strong cytotoxic effects against various malignant cell lines. These properties contribute to its effectiveness as an anti-tumor agent by inhibiting the uncontrolled growth of cancerous cells. Furthermore, the plant displays potent antimicrobial capabilities that allow it to combat diverse bacterial pathogens. Its ability to modulate immune responses also provides essential anti-inflammatory benefits for treating systemic irritation.
According to a study published by "International journal of molecular sciences", the medicinal plant Isodon rubescens provides two undescribed ent-kaurene diterpenes named guidongnin I (1) and J (2). Compound 1 contains an unprecedented 23 carbons in the skeleton by bearing an extra isopropyl group at C-17. Compound 2 is the first example of 6,7-seco-7,20-olide-ent-kaurenes with two fused-tetrahydrofuran rings formed between C-6 and C-19/C-20 through oxygen bridges. Both guidongnin I (1) and J (2) were assessed for anti-cancer activities against the growth of various cancer cell lines. Specifically, compound 2 displayed cytotoxic potency against HepG2 at an IC50 of 27.14 ± 3.43 μM.
The primary pharmacological activities of this plant are shown in the list below.
- anti-cancer
- anti-tumor
- antiproliferative
- cytotoxic
- antimicrobial
What medicinal compounds this plant contains?
This plant contains the medicinal compounds oridonin, bisrubescensin A, bisrubescensin B, bisrubescensin C, and isojangrubesin A. These specific diterpenoids are isolated from the leaves and stems of Isodon rubescens to study their biological activities. Researchers frequently examine these substances for their potential anti-inflammatory and anti-tumor properties. The chemical structure of these compounds plays a crucial role in their interaction with various cellular targets. Understanding these constituents helps scientists develop new therapeutic strategies derived from natural sources.
According to a study published by "Molecules (Basel, Switzerland)", Isodon rubescens has been used as a traditional green tea for more than 1000 years. The major ingredient of this medicinal tea is oridonin, which is a bioactive ent-kaurane diterpenoid. This plant is noted for its well-known antitumor and antibacterial activities. Researchers designed and synthesized 22 novel oridonin derivatives to evaluate these properties. Compound 12 demonstrated an MIC of 2.0 μg/mL against B. subtilis, making it nearly 3-fold stronger than the positive control chloromycetin. Additionally, compound 19 showed stronger antiproliferative activity than taxol in CaEs-17 cancer cells.
The primary medicinal compounds of this plant are shown in the list below.
- Oridonin
- bisrubescensin A
- bisrubescensin B
- bisrubescensin C
- isojiangrubesin A
What health conditions is this plant used for?
This plant is used for treating cancer, malignant tumors, and various cancers through its bioactive properties. It is specifically applied to combat the growth of a tumor by inhibiting cellular proliferation. Researchers study its potential to manage cases of neoplasia by targeting abnormal cell development. These medicinal properties make it a subject of interest in oncological studies.
According to a study published by "International journal of molecular sciences", the medicinal plant Isodon rubescens was used to isolate two undescribed ent-kaurene diterpenes named guidongnin I (1) and J (2). These compounds were assessed for their anti-cancer activities against the growth of various cancer cell lines. Compound 2 displayed cytotoxic potency against HepG2 at an IC50 of 27.14 ± 3.43 μM. Compound 1 was determined to contain an unprecedented 23 carbons in the skeleton by bearing an extra isopropyl group at C-17.
The main health conditions this plant is used for are shown in the list below.
- cancer
- malignant tumors
- tumor
- various cancers
- neoplasia
What are the herbal preparations of this plant?
This plant is Isodon rubescens, which is used to create medicinal herbal preparations known as Rabdosiae Rubescentis Herba aqueous extracts and ethanol extracts. These preparations are primarily utilized in traditional medicine to address various inflammatory and febrile conditions. The aqueous extracts involve steeping the plant material in water to pull out water-soluble active compounds. Alternatively, the ethanol extract utilizes alcohol to isolate a broader range of potent phytochemicals from the plant tissues. Both types of preparations are carefully processed to ensure consistent therapeutic efficacy.
According to a study published by "Frontiers in plant science", Isodon rubescens (Hemsley) H. Hara serves as the source of Donglingcao under the monograph Rabdosiae Rubescentis Herba in the Chinese Pharmacopoeia. The research involved sequencing, de novo assembling, and characterizing the complete chloroplast genome of seven species of Isodon. These chloroplast genomes universally exhibited a conserved quadripartite structure consisting of two inverted repeats and two unique regions. Researchers identified five highly variable regions, specifically trnS-GCU-trnT-CGU, atpH-atpI, trnE-UUC-trnT-GGU, ndhC-trnM-CAU, and rps15-ycf1, which may serve as molecular markers. These findings offer valuable data for the identification and phylogenetic research of Isodon species.
The main herbal preparations of this plant are shown in the list below.
- Rabdosiae Rubescentis Herba
- aqueous extracts
- ethanol extract
What side effects this plant can have?
This plant can cause severe developmental health side effects in organisms such as decreased body length and physical malformation. Exposure to its chemical compounds often interrupts normal growth patterns during critical life stages. These physiological disruptions lead to stunted skeletal structures and irregular limb development. Such abnormalities significantly reduce the survival rates and overall fitness of affected individuals. Regular monitoring is necessary to understand the extent of its biological impact.
According to a study published by "Pharmaceuctical biology", oridonin isolated from the leaves of Isodon rubescens showed adverse effects on zebrafish development. Low doses increased spontaneous movement and hatching rates with median effective doses (ED50) of 115.17 mg/L at 24 hpf and 188.59 mg/L at 54 hpf, but high doses resulted in IC50 values of 209.11 and 607.84 mg/L. The substance decreased heartbeat with an IC50 of 285.76 mg/L at 48 hpf and induced malformation at 120 hpf with an EC50 of 411.94 mg/L. Additionally, oridonin decreased body length with an IC50 of 324.78 mg/L at 144 hpf and increased swimming speed with an ED50 of 190.98 mg/L at 120 hpf. These developmental effects may be attributed to the downregulation of VEGFR3 gene expression.
The main side effects this plant can have are shown in the list below.
- decreased body length
- malformation
What herbs are paired with Isodon rubescens?
This plant, commonly known as false ash, pairs effectively with woody herbs like rosemary and sage to balance its subtle, earthy undertones.
The astringent qualities of its bark can be complemented by the brightness of lemon balm or mint in herbal infusions. When used in culinary or medicinal preparations, pairing it with lavender can help soften its more intense botanical notes. These combinations create a complex flavor profile that highlights the unique characteristics of the species.
Selecting companion herbs depends largely on whether you wish to emphasize its bitter qualities or mellow them out.