Molecular and phylogenetic characterization of Ostreopsis (Dinophyceae) and the description of a new species, Ostreopsis rhodesae sp. nov., from a subtropical Australian lagoon

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• 作者：Arjun Verma^a ; ^{arjun.verma-1@student.uts.edu.au} ; Mona Hoppenrath^b ; Juan José ; Dorantes-Aranda^c ; D. Tim Harwood^d ; Shauna A. Murray^a
• 关键词：Cryptic species ; Benthic dinoflagellates ; Ostreopsis rhodesae ; Great barrier reef ; Palytoxin
• 刊名：Harmful Algae
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：60
• 期：Complete
• 页码：116-130
• 全文大小：4046 K
• 卷排序：60

文摘

A novel species of Ostreopsis, Ostreopsis rhodesae sp. nov., was described based on phylogenetic and morphological analyses. Ostreopsis cf. siamensis and Ostreopsis cf. ovata were also found in this habitat, with the latter producing palytoxin-like analogues. Ostreopsis rhodesae initially appeared to be a new cryptic sister clade to O. cf. siamensis, but closer examination showed that clear morphological markers were present. Ostreopsis rhodesae does not produce palytoxin or its analogues, but has a toxic effect on fish gill cell lines. Secondary structure of the ITS2 revealed the presence of CBCs and Hemi CBCs between and within Ostreopsis clades.