gnetum

Names and Synonyms

Common Names

• Spanish joint-fir
• Belinjau
• Paddy Oats

Scientific Names

Accepted name

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta within the class Equisetopsida. It is further organized into the subclass Gnetidae and the order Gnetales, falling under the family Gnetaeae. Finally, it is identified by the genus Gnetum, specifically as the species Gnetum gnemon.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse range of habitats across several distinct Asian regions. Within China, its presence is documented in both the South-Central provinces and the high-altitude areas of Tibet. Moving toward the Indian Subcontinent, the species can be found specifically in the Assam region. Its distribution also extends into Indo-China, where it grows in the landscapes of Cambodia. Finally, the plant is also native to the forested territories of Myanmar.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Gnetum gnemon is characterized by its status as a perennial species, ensuring its long-term presence within its tropical ecosystem. As a phanerophyte, it maintains its photosynthetic structures well above the ground, often developing into a substantial woody form. Despite its large stature, it can also exhibit characteristics consistent with a nanophanerophyte in certain developmental stages or environmental contexts. Throughout its life cycle, the plant remains evergreen, retaining its foliage continuously to facilitate uninterrupted metabolic processes and growth.

Deciduousness :

evergreen

Life form :

nanophanerophyte

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Gnetum gnemon is characterized by its robust growth form as a woody tree, which can reach a maximum height of 20 m, with an average height of approximately 18 m. It is a terrestrial species, functioning as an independent organism without parasitic behavior. While its structural nature allows it to exhibit characteristics of a liana, it primarily maintains a self-supporting growth habit rather than being an obligatory climber. As a terrestrial plant, it does not exhibit epiphytic tendencies, such as being a hemi-epiphyte, nor is it aquatic or semiaquatic in its natural habitat.

Aquatic :

terrestrial

Climber :

liana

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

20 m

Plant height mean:

18 m

Woodiness :

woody

Physiology

The physiology of Gnetum gnemon is characterized by a unique evolutionary position as a gymnosperm that exhibits several advanced physiological traits typically associated with angiosperms, such as vessel elements in its xylem for more efficient water transport. A significant aspect of its metabolic profile involves its interaction with the soil environment; specifically, it functions as a nitrogen fixer, possessing the ability to facilitate the conversion of atmospheric nitrogen into bioavailable forms. This nitrogen fixation capability is a critical physiological mechanism that supports its growth and nutrient cycling within its native tropical habitats. Furthermore, its photosynthetic pathways and metabolic processes are adapted to optimize energy production under high-humidity conditions, allowing for efficient carbon assimilation and robust structural development.

Nitrogen fixer :

yes

Reproduction

The reproduction of Gnetum gnemon is characterized by a complex biotic pollination syndrome that relies on living organisms rather than abiotic factors. The process is driven by biotic agents, with specific evidence indicating that insects play a primary role in the transfer of pollen. Within this ecological interaction, moths have been identified as a key pollination syndrome component, facilitating the reproductive cycle. Furthermore, the plant exhibits a reproductive strategy where self-fertilization is absent, necessitating the involvement of these animal vectors to ensure genetic diversity and successful fertilization.

Pollination syndrome :

insect

Pollination syndrome :

moth

Pollination syndrome :

biotic

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Gnetum gnemon has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf.

Leaf

1. Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Chemicals

Gnetum gnemon has 2 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include polyphenols, trans-resveratrol.

polyphenols

1. Current diabetes reviews

trans-resveratrol

1. Current diabetes reviews

Activities

Gnetum gnemon has 1 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Antibacterial.

Antibacterial

1. Heliyon

Conditions

Gnetum gnemon has 2 reported investigations on conditions identified across 1 scientific publications and several other databases. The most consistently reported conditions include Type 2 Diabetes Mellitus, type 2 diabetes.

Type 2 diabetes mellitus

1. Current diabetes reviews

Type 2 diabetes

1. Current diabetes reviews

Preparations

Gnetum gnemon has 2 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include dried leaves, methanol leaf extracts.

Dried leaves

1. Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Methanol leaf extracts

1. Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine