Lessonia nigrescens
| Lessonia nigrescens | |
|---|---|
| |
| Lessonia nigrescens at El Quisco beach, Chile | |
| Scientific classification | |
| Kingdom: | |
| (unranked): | |
| Superphylum: | |
| Class: | |
| Order: | |
| Family: | |
| Genus: | |
| Species: | L. nigrescens
|
| Binomial name | |
| Lessonia nigrescens Bory de Saint-Vincent, 1826
| |
Lessonia nigrescens, the grey weed or giant grey weed, is a South American kelp species in the genus Lessonia.
There is at least two populations of the seaweed, marked by the difference in phenolic content. There is a subtidal population with higher phenol content and an intertidal population with a lighter phenol content. The difference in the phenolic content can be explained by the herbivory selection pressure due to the sea snail Tegula tridentata.[1]
UV treatment induces the production of phlorotannins that accumulate in physodes.[2]
This weed contains the phytosterol saringosterol that shows an inhibitory effect on Mycobacterium tuberculosis growth.[3]
References
- ^ Micropopulation differentiation in phenol content and susceptibility to herbivory in the Chilean kelp Lessonia nigrescenss (Phaeophyta, Laminariales). Enrique A. Martínez, Hydrobiologia, July 1996, Volume 326-327, Issue 1, pages 205-211, doi:10.1007/BF00047808
- ^ Induction of Phlorotannins During UV Exposure Mitigates Inhibition of Photosynthesis and DNA Damage in the Kelp Lessonia nigrescens. Ivan Gómez and Pirjo Huovinen, Photochemistry and Photobiology, September/October 2010, Volume 86, Issue 5, pages 1056–1063, doi:10.1111/j.1751-1097.2010.00786.x
- ^ Inhibition of Mycobacterium tuberculosis growth by saringosterol from Lessonia nigrescens. Wächter Gerald A, Franzblau Scott G, Montenegro Gloria, Hoffmann Joseph J, Maiese William M and Timmermann Barbara N, Journal of Natural Products, 2001, volume 64, number 11, pages 1463-1464, INIST 14134197
External links
Data related to Lessonia nigrescens at Wikispecies
Media related to Lessonia nigrescens at Wikimedia Commons- "Lessonia nigrescens". WoRMS. World Register of Marine Species.
- algaebase.org
 | This Phaeophyceae (or brown alga) article is a stub. You can help Wikipedia by expanding it. |