Euphorbia poissonii

Euphorbia poissonii,[1] also known as Euphorbia poissoni [2] and, incorrectly as Euphorbia poisoni is a highly irritant and toxic succulent member of the large and varied spurge family of plants.[3] It is native to northern Nigeria, where local farmers extract its latex for use as a pesticide. Its powerfully irritant and pain-producing nature mandates use as a fencing plant.

Euphorbia poissonii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Euphorbiaceae
Genus: Euphorbia
Species:
E. poissonii
Binomial name
Euphorbia poissonii

It is named for French botanist Henri Louis Poisson, who formally described other Euphorbia species.

Toxic activity

In addition to a variety of irritant phorbol-type esters, the latex contains resiniferatoxin and tinyatoxin, two closely related highly irritant resiniferonol-type esters.[3] The most active toxin, resiniferatoxin, binds to pain receptors in the same way as capsaicin but much more powerfully. It stimulates the neurons to fire repeatedly, causing pain.

Due to its selective nature of binding and killing pain receptors while leaving other nerve cells intact, resiniferatoxin is currently being researched as a possible treatment for chronic pain.

References
  1. Euphorbia poissonii in Tropicos
  2. Euphorbia poissoni in CJB African Plant Database
  3. Euphorbia poissonii in BoDD – Botanical Dermatology Database
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.