Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Unidentified Mycosis of Kelp Saccharina japonica Gametophytes

다시마(Saccharina japonica) 배우체의 미동정 진균증

  • 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)
  • 정하나 (전남대학교 수산생명의학과) ;
  • 오명주 (전남대학교 수산생명의학과) ;
  • 최성제 (전라남도 해양수산과학원) ;
  • 서정수 (국립수산과학원 수산방역과) ;
  • 박명애 (국립수산과학원 남동해수산연구소) ;
  • 김위식 (전남대학교 수산생명의학과)
  • Received : 2016.07.29
  • Accepted : 2017.03.23
  • Published : 2017.04.30
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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.

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References

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