DSpace About DSpace Software
 

Digital Library >
Bộ danh mục tài liệu thư viện - Viện Hải dương học - VNIO library catalogue >
Công bố khoa học ở tạp chí quốc tế - International research papers (Bibliographic record and/or full-text) >

Please use this identifier to cite or link to this item: http://tvhdh.vnio.org.vn:8080/xmlui/handle/123456789/20506

Title: Toxigenic strains of Azadinium poporum (Amphidomataceae, Dinophyceae) from Japan and Vietnam, with first reports of A. poporum (ribotype A) and A. trinitatum in Asian Pacific
Authors: Takahashi, Kazuya
Lum, Wai Mun
Benico, Garry
Uchida, Hajime
Ozawa, Mayu
Oikawa, Hiroshi
Suzuki, Toshiyuki
Nguyen, Van Nguyen
Dao, Viet Ha
Iwataki, Mitsunori
Keywords: Japan
Vietnam
Dinoflagellate
Azadinium poporum
Azadinium trinitatum
Azadinium zhuanum
Issue Date: 2021
Series/Report no.: Phycological Research, Vol. 69 (3) pp. 175-187, 2021; https://doi.org/10.1111/pre.12455;
Abstract: Morphology and phylogeny of small armored dinoflagellate Azadinium species isolated from Japanese and Vietnamese coasts were examined by light microscopy, scanning electron microscopy and molecular phylogeny inferred from ITS and LSU rDNA (D1–D3) sequences. Dominant azaspiracids (AZAs) were analyzed by using liquid chromatography/triple quadrupole mass spectrometer (LC/MS/MS). Sixteen and four culture strains were established from Japan and Vietnam, respectively. A phylogenetic tree confirmed our species identifications of Japanese cultures as Azadinium poporum (ribotypes A, B and C), A. trinitatum and A. zhuanum, and Vietnamese cultures as A. poporum (ribotype B). Typical cells of A. poporum had the thecal tabulation of Po, cp, X, 4′, 3a, 6″, 6C, 5S, 6″′, 2″″, A. trinitatum had Po, cp, X, 4–5′, 3a, 6–7″, 6C, 5S, 5–6″′, 2″″ and A. zhuanum had Po, cp, X, 3–4′, 2a, 6″, 6C, 5S, 6″′, 2″″. Cellular morphology of the three species were congruent with those in the original reports, in terms of the presence/absence of antapical spine and the position of the ventral pore, nucleus and pyrenoids, although small differences were also found in the nucleus position of A. trinitatum and A. zhuanum. AZA-2 was the dominant component in Japanese A. poporum (ribotypes A, B and C), and AZA-40 in Vietnamese A. poporum (ribotype B). AZA-2 and AZA-40 were not detected in Vietnamese and Japanese A. poporum, respectively. AZA analogs were not detected from A. trinitatum and A. zhuanum. This is the first report of the toxigenic A. poporum from Japan and Vietnam, with identifications of the major AZAs. The ribotype A of A. poporum and A. trinitatum were the first records in Asia.
URI: http://113.160.249.209:8080/xmlui/handle/123456789/20506
ISSN: ISSN: 1322-0829; eISSN: 1440-1835
Appears in Collections:Công bố khoa học ở tạp chí quốc tế - International research papers (Bibliographic record and/or full-text)

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2012  Duraspace - Feedback