Porphyra (algue)

Cet article est une ébauche concernant les algues.

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Page d’aide sur l’homonymie

Pour les articles homonymes, voir Porphyra.

Porphyra
Description de cette image, également commentée ci-après
Thalle de Porphyra umbilicalis
Classification AlgaeBase
Empire Eukaryota
Sous-règne Biliphyta
Embranchement Rhodophyta
Sous-embr. Eurhodophytina
Classe Bangiophyceae
Sous-classe Bangiophycidae
Ordre Bangiales
Famille Bangiaceae

Genre

Porphyra
C. Agardh, 1824

Porphyra (du grec porphyra, « pourpre ») est un genre d'algues rouges de la famille des Bangiaceae, comprenant environ 70 espèces[1]. Elle vit sur l'estran, typiquement entre la zone intertidale supérieure et l'étage supralittoral des mers froides et tempérées, notamment près des laisses de haute mer où elle est capable de supporter de longues émersions[2]. En Asie du Sud-Est, elle est utilisée comme varech pour produire le nori (au Japon) et le gim (en) (en Corée). Elle y est aussi cultivée et transformée pour être consommée directement pour l'alimentation humaine[3].

Le cycle de vie de l'algue comporte une alternance de deux générations : le gamétophyte macroscopique correspond à l'algue visible sur les rochers, et le sporophyte microscopique et filamenteux avait été décrit sous un autre nom : Conchocelis (Conchocelis rosea), qui est donc un synonyme de Porphyra.

Liste d'espèces

Selon AlgaeBase (20 mai 2012)[4] :

Selon Catalogue of Life (20 mai 2012)[5] :

Selon ITIS (20 mai 2012)[6] :

Selon NCBI (20 mai 2012)[7] :

Selon World Register of Marine Species (20 mai 2012)[8] :

Notes et références

  1. ↑ (en), J.A.Brodie et L.M. Irvine, Seaweeds of the British Isles, Volume 1, Partie 3b, The Natural History Museum, 2003
  2. ↑ René Pérez, Ces algues qui nous entourent, Editions Quae, (lire en ligne), p. 25
  3. ↑ « Saumon en cage, tomate sous plastique, algues sur cordes… Les coulisses de l’agriculture mondiale », sur lemonde.fr, Le Monde, (consulté le )
  4. ↑ Guiry, M.D. & Guiry, G.M. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org, consulté le 20 mai 2012
  5. ↑ Catalogue of Life Checklist, consulté le 20 mai 2012
  6. ↑ Integrated Taxonomic Information System (ITIS), www.itis.gov, CC0 https://doi.org/10.5066/F7KH0KBK, consulté le 20 mai 2012
  7. ↑ NCBI, consulté le 20 mai 2012
  8. ↑ World Register of Marine Species, consulté le 20 mai 2012
  • (en) Womersley H.B.S. & Conway E., 1975. Porphyra and Porphyropsis (Rhodophyta) in southern Australia. Transactions of the Royal Society of South Australia 99: 59–70, 7 figs.

Liens externes

Sur les autres projets Wikimedia :

Sous le nom Porphyra

Sous le nom Conchocelis

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