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. UV treatment induces the production of phlorotannins that accumulate in physodes.

Property Value
dbo:abstract
  • Lessonia nigrescens est une espèce d'algues brunes de la famille des Lessoniaceae, présente le long de la côte Pacifique sud-américaine depuis le Pérou jusqu'aux régions subantarctiques du Chili. C'est une grande algue, constitutive du kelp, exploitée pour l'extraction d'alginates . (fr)
  • 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. UV treatment induces the production of phlorotannins that accumulate in physodes. This weed contains the phytosterol saringosterol that shows an inhibitory effect on Mycobacterium tuberculosis growth. (en)
dbo:binomialAuthority
dbo:class
dbo:colourName
  • greenyellow (en)
dbo:division
dbo:family
dbo:genus
dbo:kingdom
dbo:order
dbo:thumbnail
dbo:wikiPageExternalLink
dbo:wikiPageID
  • 37998750 (xsd:integer)
dbo:wikiPageRevisionID
  • 695477425 (xsd:integer)
dbp:binomial
  • Lessonia nigrescens
dbp:imageCaption
  • Lessonia nigrescens at El Quisco beach, Chile
dbp:species
  • L. nigrescens
dbp:subdivisionRanks
  • Subspecies
dct:subject
http://purl.org/linguistics/gold/hypernym
rdf:type
rdfs:comment
  • Lessonia nigrescens est une espèce d'algues brunes de la famille des Lessoniaceae, présente le long de la côte Pacifique sud-américaine depuis le Pérou jusqu'aux régions subantarctiques du Chili. C'est une grande algue, constitutive du kelp, exploitée pour l'extraction d'alginates . (fr)
  • 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. UV treatment induces the production of phlorotannins that accumulate in physodes. (en)
rdfs:label
  • Lessonia nigrescens (fr)
  • Lessonia nigrescens (en)
owl:sameAs
prov:wasDerivedFrom
foaf:depiction
foaf:isPrimaryTopicOf
is dbo:wikiPageRedirects of
is foaf:depiction of
is foaf:primaryTopic of