Ophiorrhiza pumila
Ophiorrhiza pumila · Accepted scientific name
Scientific literature: Very Sparse (3 studies) · ★☆☆☆☆
Ophiorrhiza pumila is a medicinal plant recognized for its significant potential in anticancer research. Various parts of the plant, including the roots, flowers, leaves, and seeds, serve as valuable sources for bioactive compounds. Scientists particularly focus on extracting potent chemicals such as camptothecin (CPT) and strictosamide to combat cancer cells. Research often utilizes methanol extracts and specialized hairy root cultures to enhance the yield of these therapeutic substances. Through these diverse preparations, the plant offers promising pathways for developing new strategies against various cancer conditions.
- Synonyms
- Ophiorrhiza Pumila Var. Inflata · Ophiorrhiza Inflata · 1 more
- Common names
- Not available
- Family
- Rubiaceae
- Distribution
- Not available
- Plant Parts
- Root · Flower
Classification
Common Names
Ophiorrhiza pumila is a distinctive plant known by several different names depending on the region and language. It is widely recognized by its common English name, the Dwarf Ophiorrhiza. In Japanese contexts, it is referred to as chabo-inamori or チャボイナモリ. The plant also holds significant cultural importance in China, where it is called duan xiao she gen cao or 白花蛇根草. These diverse monikers reflect the plant's widespread presence and varied linguistic identities across the globe.
Sources: Catalogue of Life (COL)
Synonyms
Ophiorrhiza pumila is a botanical species that is associated with several taxonomic synonyms. Within various scientific records, the plant has been identified under the name Ophiorrhiza humilis. It is also frequently documented as Ophiorrhiza inflata in historical literature. Furthermore, the specific variety Ophiorrhiza pumila var. inflata is recognized as a closely linked synonym. Understanding these various nomenclatural relationships is essential for accurate botanical identification.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Ophiorrhiza pumila is a unique botanical species that belongs to the vast kingdom Plantae. Within this diverse kingdom, it is classified under the class Equisetopsida. Its taxonomic journey continues through the order Gentianales, which helps define its evolutionary lineage. As a member of the genus Ophiorrhiza, it shares specific morphological traits with its close relatives. Finally, this plant is nested within the Rubiaceae family, marking its place among a well-known group of flowering plants.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Gentianales |
| Family | Rubiaceae |
| Genus | Ophiorrhiza |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Ophiorrhiza pumila is a plant species primarily distributed throughout the Asia-Temperate regions. Its presence is notably documented across various parts of China, including the South-Central and Southeast provinces as well as the island of Hainan. The species also extends its reach into Eastern Asia, specifically inhabiting the islands of Japan. Within the Japanese archipelago, it can be found localized in the Nansei-shoto chain. This wide geographical range highlights the plant's ability to thrive across diverse East Asian environments.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Ophiorrhiza pumila is characterized by its distinctive growth form as a delicate herb. This species functions as a self-supporting plant, maintaining its structure independently within its natural habitat.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Ophiorrhiza pumila serves as a critical biological model due to its ability to produce camptothecin, a potent alkaloid with significant anticancer activity. Recent research has focused on unraveling the complex biosynthetic pathways within this plant to better understand how these therapeutic compounds are synthesized. Scientists have identified key transcriptional regulators, such as OpWRKY2 and OpNAC1, which play vital roles in managing the production levels of these anticancer agents. By studying specific enzymes like OpLAMT1 and unique intermediates like 3α-(S)-strictosidine, researchers are gaining deeper insights into the plant's metabolic diversity. Ultimately, these discoveries provide a foundation for metabolic engineering and industrial-scale production of life-saving cancer treatments.
Compounds
Ophiorrhiza pumila is a medicinal plant of significant pharmacological interest due to its ability to produce various monoterpene indole alkaloids. Most notably, the species contains camptothecin, a valuable compound widely utilized in the treatment of cancer as an anti-tumor agent. The biosynthesis of this potent drug follows a complex network rather than a simple linear pathway, involving several specialized intermediates. Among these critical precursors, the plant also contains strictosamide, which serves as the first specialized intermediate in the production of camptothecin. Understanding these internal chemical relationships and the genetic regulators involved provides essential insights for improving the yield of these high-value medicinal compounds.
Conditions
Ophiorrhiza pumila produces camptothecin, a compound used to treat cancer and various anticancer conditions. Research into its cultivation shows that different nutrient solution concentrations impact its chemical profile. Specifically, the plant's development and camptothecin accumulation are influenced by 0.125 NSC, 0.25 NSC, and 0.5 NSC. Studies indicate that a 0.25 NSC environment is particularly effective for maximizing its medicinal content.
Preparations
Ophiorrhiza pumila is prepared as hairy roots and hairy root cultures to facilitate the study of camptothecin biosynthesis. Researchers utilize transgenic O. pumila hairy root lines to improve the accumulation of anti-cancer drugs through metabolic engineering. The plant is also prepared as methanol extracts to profile and identify various camptothecin-related alkaloids. These different preparations, including both hairy roots and extracts, serve as essential tools for investigating the enzymatic pathways of the species. Ultimately, these diverse methods of preparation allow for the enhancement of therapeutic compound yields.
Parts used
Ophiorrhiza pumila is a medicinal plant valued for its ability to produce the anti-cancer compound camptothecin across its various morphological structures. Research indicates that the concentration of this valuable alkaloid varies significantly between the stem, root, leaf, flower, and seed. Specifically, the stem and root tend to hold higher levels of the compound compared to the leaves and flowers. Scientists have also found that the total production of camptothecin reaches its peak during the seed-ripening stage. Understanding the distribution of these chemical components throughout the plant's different parts is essential for optimizing harvest times and maximizing medicinal yields.