Proposal of Pseudochattonella verruculosa gen. nov., comb. nov. (Dictyochophyceae) for a formar raphidophycean alga Chattonella verruculosa, based on 18S rDNA phylogeny and ultrastructural characteristics |
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| Authors: | Shoko Hosoi-Tanabe Daiske Honda Sachiko Fukaya Isamu Otake Yuji Inagaki Yoshihiko Sako |
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| Institution: | Research Center for Inland Seas, Kobe University, Higashinada, Kobe, 658-0022, Hyogo, Japan;Department of Biology, Faculty of Science and Engineering, Konan University, Higashinada, Kobe, 658-8501, Hyogo, Japan,;Laboratory of Marine Microbiology, Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan and;Center for Computational Sciences, Institute of Biological Sciences, University of Tsukuba, Ibaraki, 305-8577, Japan |
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| Abstract: | Chattonella verruculosa Y. Hara et Chihara was re‐examined by molecular methods and microscopic examination. The 18S rDNA phylogenetic analysis clearly indicated that C. verruculosa is a member of the Dictyochophyceae, with a specific affinity to Florenciella parvula. The morphological features in C. verruculosa– namely the proximal helix with two gyres and many scattered DNA‐containing areas in the chloroplasts – display the evolutionary link to the Dictyochophyceae, instead of the Raphidophyceae. Similarly, unique pyrenoid morphologies are shared between C. verruculosa and the dictyochophycean algae. Combining the molecular data and morphological characteristics, C. verruculosa is transferred to Pseudochattonella gen. nov. of the class Dictyochophyceae as Pseudochattonella verruculosa (Y. Hara et Chihara) Hosoi‐Tanabe, Honda, Fukaya, Inagaki et Sako comb. nov. |
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| Keywords: | Chattonella verruculosa Dictyochophyceae flagellar apparatus harmful algal bloom phylogenetic analysis Pseudochattonella verruculosa Raphidophyceae |
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