Potamogeton nodosus
Potamogeton nodosus · Accepted scientific name
Scientific literature: Very Sparse (0 studies) · ★☆☆☆☆
Potamogeton nodosus, commonly known as knotweed pondweed, is an aquatic plant frequently studied for its diverse biochemical properties. Recent scientific investigations have focused on evaluating the biological efficacy of its ethanolic extract. This specific preparation is utilized to test the plant's ability to inhibit various microbial species. Research specifically targets the plant's impact on both Gram-negative and Gram-positive bacteria. Understanding these antimicrobial activities provides valuable insights into the potential therapeutic applications of this aquatic species.
- Synonyms
- Potamogeton Pensylvanicus Var. Portoricensis · Potamogeton Natans Var. Mexicanus · 46 more
- Common names
- Not available
- Family
- Potamogetonaceae
- Distribution
- Africa
- Plant Parts
- Not available
Classification
Common Names
Potamogeton nodosus is a versatile aquatic plant known by several distinct common names across different regions. In English-speaking areas, it is most frequently referred to as Broad-leaved Pondweed. Its diverse linguistic identity also includes the name Brasca nodosa and the Portuguese designation Colher-folha-de-louro. Furthermore, the species carries specific Welsh names such as Dyfrllys Loddon and Dyfrllys Rhwydog. These various titles highlight the widespread recognition of this plant in different botanical contexts.
Sources: Catalogue of Life (COL)
Synonyms
Potamogeton nodosus is a complex species characterized by several distinct taxonomic synonyms. Scientific literature identifies various forms of the plant, such as Potamogeton americanus subsp. mascarensis and the variety novaeboracensis. It is also closely linked to Potamogeton americanus var. thunbergii through historical classification. Furthermore, the species shares botanical relationships with Potamogeton canariensis and Potamogeton drucei. Understanding these overlapping names is essential for accurate identification within the genus.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Potamogeton nodosus is a distinct species that belongs to the vast kingdom Plantae. Within this botanical realm, it is classified under the class Equisetopsida. The plant is a member of the order Alismatales, which helps define its biological characteristics. It further resides within the specific family Potamogetonaceae. Ultimately, this species is a representative of the diverse genus Potamogeton.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Alismatales |
| Family | Potamogetonaceae |
| Genus | Potamogeton |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Potamogeton nodosus exhibits a wide-reaching distribution that spans several key regions across the African continent. In East Tropical Africa, the species is notably present within the waters of Tanzania. Its reach extends to Northeast Tropical Africa, where it can be found in Chad. Furthermore, the plant has successfully established itself in the Macaronesia islands, including Madeira, the Canary Islands, and the Azores. This diverse geographic range highlights the plant's ability to thrive in various aquatic environments across these distinct territories.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Potamogeton nodosus is a self-supporting herb that thrives in various aquatic environments. This plant exhibits a versatile growth form, allowing it to adapt to its surroundings effectively. Its physical dimensions vary significantly, with heights ranging from a minimum of 0.02 m to a maximum of 2 m. Depending on the specific conditions, it may also maintain a minimum height of 0.4 m. Such adaptability in size ensures its success within its ecological niche.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Compounds
Conditions
Potamogeton nodosus contains a specific furanoid labdane diterpene that functions as an antibacterial agent. This isolated compound demonstrates the ability to treat various types of Gram-negative bacteria. Furthermore, the plant extract shows effectiveness in treating Gram-positive bacteria as well. The inhibitory activity against both bacterial groups is characterized as moderate. These findings highlight the medicinal potential of the plant in combating diverse microbial threats.
Preparations
Potamogeton nodosus is prepared as an ethanolic extract to facilitate the isolation of specific chemical compounds. From this prepared extract, researchers successfully isolated a new furanoid diterpene known as 15,16-epoxy-12-oxo-8(17), 13(16), 14-labdatrien-20,19-olide. The structural elucidation of this compound was achieved through standard spectroscopic methods, including 2D NMR techniques. This specific substance derived from the ethanolic extract of the plant demonstrates moderate inhibitory activity against various bacteria. Consequently, the use of an ethanolic extract proves essential for studying the bioactive properties of Potamogeton nodosus.