Adenoides sinensis , a new sand-dwelling dinoflagellate species from China and reexamination of Adenoides eludens from an Atlantic strain

Type Article
Date 2018-03
Language English
Author(s) Gu Haifeng1, Li Xintian1, Chomerat NicolasORCID2, Luo Zhaohe1, Sarno Diana3, Gourvil Priscilla4, Balzano Sergio4, 6, 7, Siano Raffaele5
Affiliation(s) 1 : State Ocean Adm, Inst Oceanog 3, Xiamen 361005, Peoples R China.
2 : IFREMER, LER BO, Stn Biol Marine, Pl Croix,BP40537, F-29185 Concarneau, France.
3 : Staz Zool Anton Dohrn, Dept Integrat Marine Ecol, Villa Comunale, I-80121 Naples, Italy.
4 : CNRS, Stn Biol Roscoff, UMR7144, F-29680 Roscoff, France.
5 : IFREMER, Ctr Brest, DYNECO PELAGOS, F-29280 Plouzane, France.
6 : NIOZ Royal Netherlands Inst Sea Res, Dept Marine Microbiol & Biogeochem, POB 59, NL-1790 AB Den Burg, Netherlands.
7 : Univ Utrecht, POB 59, NL-1790 AB Den Burg, Netherlands.
Source Phycologia (0031-8884) (Int Phycological Soc), 2018-03 , Vol. 57 , N. 2 , P. 179-190
DOI 10.2216/17-76.1
WOS© Times Cited 1
Keyword(s) Amphidinium eludens, Amphidinium kofoidii, Benthic dinoflagellates, Molecular phylogeny, Pseudadenoides

The sand-dwelling dinoflagellate genera Adenoides and Pseudadenoides are morphologically very close but distinct in their molecular phylogeny. We established three cultures by isolating single cells from sand samples collected in intertidal zones of Qingdao (Yellow Sea), Dongshan (South China Sea) and Brittany (English Channel, North Atlantic, France). Strain morphology was examined with light and scanning electron microscopy, and both large subunit ribosomal DNA (LSU rDNA) and small subunit ribosomal DNA (SSU rDNA) sequences were amplified. Molecular phylogeny, corroborated by morphological examination showing the existence of a ventral pore, confirmed the identification of the French strain (RCC1982) as Adenoides eludens. The Chinese strains differed from Adenoides eludens in two additional posterior intercalary plates and differed from Pseudadenoides in one additional apical plate having the plate formula of Po, Cp, X, 5′, 6′′, 4S, 5′′′, 5p, 1′′′′ or alternatively Po, Cp, X, 5′, 6′′, 5S, 5′′′, 3p, 2′′′′. Maximum likelihood and Bayesian inference, carried out with concatenated LSU and SSU sequences, demonstrated that the Chinese strains were closely related but different from A. eludens and, in corroboration with morphological evidence, supported their classification as a distinct species, Adenoides sinensis sp. nov. Morphological and molecular results confirmed the close relationship between the two genera Adenoides and Pseudadenoides.

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Gu Haifeng, Li Xintian, Chomerat Nicolas, Luo Zhaohe, Sarno Diana, Gourvil Priscilla, Balzano Sergio, Siano Raffaele (2018). Adenoides sinensis , a new sand-dwelling dinoflagellate species from China and reexamination of Adenoides eludens from an Atlantic strain. Phycologia, 57(2), 179-190. Publisher's official version : , Open Access version :