Dianthera secunda
Dianthera secunda · Accepted scientific name
Scientific literature: Very Sparse (0 studies) · ★☆☆☆☆
Dianthera secunda is a botanical species that has gained significant attention for its diverse therapeutic potential in pharmacological research. Scientific investigations have focused on its ability to combat various ailments, including cancer and oxidative stress. Furthermore, the plant shows promise in managing sickle cell disease and providing relief from snakebites. Researchers primarily explore these medicinal properties through the use of methanol and acetone extracts. These specific preparations allow for the isolation of bioactive compounds essential for evaluating the plant's efficacy.
- Synonyms
- Justicia Lucida · Justicia Caripensis · 20 more
- Common names
- Not available
- Family
- Acanthaceae
- Distribution
- Not available
- Plant Parts
- Not available
Classification
Common Names
Dianthera secunda is a versatile plant known by a diverse array of regional and descriptive common names. It is frequently referred to as Insulina or Singamochila depending on the local context. In many areas, it is widely recognized by the name St. John bush or the slightly varied St. John's bush. Specifically, the variety found within the Lesser Antilles is often distinguished as St. John's bush (Lesser Antilles). This variety of nomenclature highlights the plant's widespread presence and cultural significance across different landscapes.
Sources: Catalogue of Life (COL)
Synonyms
Dianthera secunda is a taxonomically complex species that encompasses several botanical synonyms. Its classification includes the name Amphiscopia ciliata, reflecting historical shifts in scientific nomenclature. The plant is also identified by the synonym Dianthera lucida, which highlights its diverse descriptive history. Furthermore, the species is categorized through various botanical varieties, such as Dianthera secunda var. geniculata and Dianthera secunda var. holtonii. Finally, the designation Dianthera secunda var. lucida further illustrates the intricate layers of its taxonomic relationships.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Dianthera secunda is a distinctive botanical specimen belonging to the kingdom Plantae. Within this vast realm, the species is classified under the class Equisetopsida. It specifically falls into the order Lamiales, showcasing its complex evolutionary lineage. Further narrowing its identity, the plant is a member of the family Acanthaceae. Ultimately, it is defined by its unique placement within the genus Dianthera.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Lamiales |
| Family | Acanthaceae |
| Genus | Dianthera |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Dianthera secunda exhibits a remarkably wide geographical distribution that spans across multiple continents and diverse ecosystems. In Africa, this species can be found throughout West Tropical Africa, specifically within Benin, as well as in the West-Central Tropical regions of Gabon. Its reach extends across the Atlantic to Southern America, where it is established in northern Brazil. The plant also thrives within the Caribbean, occupying various island territories such as Bermuda and the Leeward Islands. This broad range highlights the species' ability to adapt to various tropical environments across the globe.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Dianthera secunda is characterized by its distinct growth form as a herbaceous plant. This species is entirely self-supporting, allowing it to maintain its structure without the need for external assistance.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Compounds
Dianthera secunda, also known as Justicia secunda, is a traditional medicinal plant widely utilized across tropical regions such as West Africa. Detailed chemical characterization of its various extracts has revealed a complex profile containing over 50 identified compounds. Notably, the plant contains significant amounts of flavonoids, which contribute to its diverse biological activities. These flavonoid components, alongside phenolic acids and alkaloids, help drive the plant's potent antioxidant and enzyme inhibitory properties. Consequently, the presence of these bioactive constituents positions the species as a multifunctional raw material for managing diseases linked to oxidative stress.
Conditions
Dianthera secunda, also referred to as Justicia secunda, shows potential for managing diseases related to oxidative stress such as Alzheimer's and cancer. Specifically, aqueous extracts of the plant have demonstrated selective anticancer properties against human pharyngeal cancer cell lines. Regarding its antimicrobial capabilities, the plant was tested against Staphylococcus aureus ATCC 25923, Pseudomonas aeruginosa ATCC 27853, and Enterococcus feacalis (clinical strain). However, the in vitro screening of methanol and acetone extracts yielded no activity against these three bacterial strains. Consequently, the study found no evidence to support the folklore claims that the plant treats these specific infections through antimicrobial mechanisms.
Preparations
Dianthera secunda, also known as Justicia secunda or Bloodroot, was processed to create specific chemical solutions for antimicrobial testing. These methanol and acetone extracts were prepared using the soxhlet extraction method to isolate potential medicinal compounds. The methanol extract achieved an extraction yield of 15.3%, while the acetone extract yielded 0.75%. During the study, these prepared extracts were tested against several bacterial strains commonly associated with diabetic wounds. Ultimately, neither the methanol nor the acetone extracts demonstrated antimicrobial activity against the tested bacteria.