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http://dx.doi.org/10.5657/KFAS.2017.0219

Unidentified Mycosis of Kelp Saccharina japonica Gametophytes  

Jeong, Ha-Na (Department of Aqualife Medicine, Chonnam National University)
Oh, Myung-Joo (Department of Aqualife Medicine, Chonnam National University)
Choi, Sung-Je (Algae Research Institute, Jeollanamdo Fisheries Research and Development Institute)
Seo, Jung-Soo (Aquatic Life Disease Control Division, National Fisheries Research and Development Institute)
Park, Myoung-Ae (Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science)
Kim, Wi-Sik (Department of Aqualife Medicine, Chonnam National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.50, no.2, 2017 , pp. 219-221 More about this Journal
Abstract
In 2015, white cottony tufts were observed on gametophytes of the kelp Saccharina japonica. Wet mount and histopathology examination revealed numerous fungal hyphae and mycelium around the gametophytes. The gametophytes surrounded by fungal hyphae were generally round and empty. A specific 610-bp fragment of the internal transcribed spacer (ITS)-5.8S rDNA-ITS gene of fungi was amplified by polymerase chain reaction and the nucleotide sequence showed 100% identity with those of Acremonium sclerotigenum, Acremonium sp. and Ascomycota sp. When fungus-infected gametophytes were mixed with healthy gametophytes, a high transmission rate (100%) resulted. This is the first report of mycosis of gametophytes in Korea.
Keywords
Fungi; Gametophyte; Kelp; Saccharina japonica;
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