Pyropia tenera explained

Pyropia tenera, also known as gim or nori, is a red algal species in the genus Pyropia. The specific name, tenera, means "delicate" and alludes to its small size. It typically grows to lengths between 20 and 50 cm. It is most typically found in the western Pacific Ocean and the Indian Ocean.

Mariculture

In both Wales and Japan, P. tenera (and P. yezoensis) serve as a principal component of dried seaweed food, and has been actively cultivated since ancient times. In Japan, it is most often used in nori, (and in China as zicai, and Korea as gim), and as such is a prime ingredient in sushi. In Wales (and to some degree, England), it is used in the traditional food, laverbread.

Like many of the edible seaweed species, it is susceptible to infection by the parasitic oomycete Pythium porphyrae.^{[1] [2] [3] [4]}

Notes and References

1. Spencer. M. A.. Pythium porphyrae. (Descriptions of Fungi and Bacteria). IMI Descriptions of Fungi and Bacteria. 2004. 162. Sheet 1617. 10 October 2017. en. A description is provided for Pythium porphyrae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASES: Red-rot disease, red-wasting disease. HOSTS: Bangia atropurpurea, Callophyllis adhaerens, Polyopes affinis (syn.
2. Arasaki. Satoshi. アサクサノリの腐敗病に關する研究. Nippon Suisan Gakkaishi (Bulletin of the Japanese Society of Scientific Fisheries). 1947. 13. 3. 74–90. 10.2331/suisan.13.74. Studies on the Wasting Disease of the Cultured Lavers (Porphyra tenera). ja. 0021-5392. free.
3. Diehl. Nora. Kim. Gwang Hoon. Zuccarello. Giuseppe C.. A pathogen of New Zealand Pyropia plicata (Bangiales, Rhodophyta), Pythium porphyrae (Oomycota). Algae. March 2017. 32. 1. 29–39. 10.4490/algae.2017.32.2.25. free.
4. Takahashi . Minoru . Minoru Takahashi . Ichitani . Takio . Takio Ichitani . Sasaki . Minoru . 1977 . ノリ赤腐病を起因するPythium porphyrae . Pythium porphyrae sp. nov. causing red rot of marine algae Porphyra spp. . Transactions of the Mycological Society of Japan . 18 . 3 . 279–285 .