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논문 기본 정보

자료유형
학술저널
저자정보
Jeon, Boo Seong (LOHABE, Department of Oceanography, Chonnam National University) Nam, Seung Won (LOHABE, Department of Oceanography, Chonnam National University) Kim, Sunju (Department of Oceanography, Pukyong National University) Park, Myung Gil (LOHABE, Department of Oceanography, Chonnam National University)
저널정보
한국조류학회(藻類) Algae Algae 제33권 제1호
발행연도
2018.1
수록면
1 - 19 (19page)

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초록· 키워드

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Members of the family Parviluciferaceae (Alveolata, Perkinsozoa) are the well-known dinoflagellate parasitoids along with Amoebophrya ceratii species complex and parasitic chytrid Dinomyces arenysensis and contain six species across three genera (i.e., Parvilucifera infectans, P. sinerae, P. rostrata, and P. corolla, Dinovorax pyriformis, and Snorkelia prorocentri) so far. Among Parvilucifera species, the two species, P. infectans and P. sinerae, are very similar or almost identical each other morphologically and genetically, thereby make it difficult to distinguish between the two. The only main difference between the two species known so far is the number of sporangium wall (i.e., 2 layers in P. infectans vs. 3 layers in P. sinerae). During sampling in Masan bay, Korea during the spring season of 2015, the dinoflagellate Akashiwo sanguinea cells infected by the parasite Parvilucifera were observed and this host-parasite system was established in culture. Using this culture, its morphological and ultrastructural features with special emphasis on the variation in the number of sporangium wall over developmental times, were investigated. In addition, the sequences of rDNA regions and ${\beta}-tubulin$ genes were determined. The result clearly demonstrated that the trophocyte at 36 h was covered with 4 layers, and then outer layer of the sporocyte gradually degraded over time, resulting in wall structure consisting of two layers, with even processes being detached from 7-day-old sporangium with smooth surface, indicating that the difference in the number of layers seems not to be an appropriate ultrastructural character for distinguishing P. infectans and P. sinerae. While pairwise comparison of the large subunit rDNA sequences showed 100% identity among P. infectans / P. sinerae species complex, genetic differences were found in the small subunit (SSU) rDNA sequences but the differences were relatively small (11-13 nucleotides) compared with those (190-272 nucleotides) found among the rest of Parvilucifera species (P. rostrata and P. corolla). Those small differences in SSU rDNA sequences of P. infectans / P. sinerae species complex may reflect the variations within inter- strains of the same species from different geographical areas. Taken together, all morphological, ultrastructural, and molecular data from the present study suggest that they are the same species.
#inter-strain variation #parasitism #parasitoid #sporangium #synonymy

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참고문헌 (32)

참고문헌 신청
Alacid, E. / 2015 / New insights into the parasitoid Parvilucifera sinerae life cycle: the development and kinetics of infection of a bloom-forming dinoflagellate host / Protist 166:677~699 Crossref Azevedo, C. / 1989 / Fine structure of Perkinsus atlanticus n. sp.(Apicomplexa, Perkinsea) parasite of the clam Ruditapes decussatus from Portugal / J. parasitol. 75:627~635 google schola Coats, D. W. / 1999 / Parasitic life styles of marine dinoflagellates / J. Eukaryot. Microbiol. 46:402~409 Crossref Coats, D. W. / 2012 / Revision of the family Duboscquellidae with description of Euduboscquella crenulata n. gen., n. sp. (Dinoflagellata, Syndinea), an intracellular parasite of the ciliate Favella panamensis Kofoid & Campbell, 1929 / J. Eukaryot. Microbiol. 59:1~11 Crossref Coats, D. W. / 1994 / Occurrence of the parasitic dinoflagellate Amoebophrya ceratii in Chesapeake Bay populations of Gymnodinium sanguineum / J. Eukaryot. Microbiol. 41:586~593 Crossref

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