Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/119943
Title: Molecular phylogeny of the spiny-surfaced species of the dinoflagellate Prorocentrum with the description of P. thermophilum sp. nov. and P. criophilum sp. nov. (Prorocentrales, Dinophyceae)
Authors: Gómez, Fernando
Gourvil, Priscillia
Li, Tangcheng
Huang, Yulin
Zhang, Huan
Courcot, Lucie
Artigas, Luis F.
Soler Onís, Emilio 
Gutiérrez-Rodríguez, Andrés
Lin, Senjie
UNESCO Clasification: 241720 Taxonomía vegetal
241707 Algología (ficología)
Keywords: Dinophyta
Habs
Harmful Algae Blooms
Molecular Phylogenetics
New Species, et al
Issue Date: 2022
Journal: Journal of Phycology 
Abstract: Spiny-surfaced species of Prorocentrum form harmful algal blooms, and its taxonomic identity is obscure due to the size and shape variability. Molecular phylogenies reveal two major clades: one for P. cordatum with sequences mainly retrieved as P. minimum, and the other for P. shikokuense with sequences also retrieved as P. dentatum and P. donghaiense. Several closely related clades still need to be characterized. Here, we provide nuclear SSU and LSU rRNA genes, and nuclear ITS region (ITS1-5.8S gene-ITS2) sequences of the strain CCMP3122 isolated from Florida (initially named P. donghaiense) and strains Prorocentrum sp. RCC6871–2 from the Ross Sea, Antarctica. We describe Prorocentrum thermophilum sp. nov. based on the strain CCMP3122, a species also distributed in the open waters of the Gulf of Mexico, New Zealand, and the Arabian Gulf; and Prorocentrum criophilum sp. nov. based on the strain RCC6872, which is distributed in the Antarctic Ocean and Arctic Sea. Prorocentrum thermophilum is roundish (~14 μm long, ~12 μm wide), with an inconspicuous anterior spine-like prolongation under light microscopy, valves with tiny, short knobs (5–7 per μm2), and several (<7) large trichocyst pores (~0.3 μm) in the right valve, as well as smaller pores (~0.15 μm). Prorocentrum criophilum is round in valve view (~11 μm long, 10 μm wide) and asymmetrically roundish in lateral view, the periflagellar area was not discernible under light microscopy, valves with very tiny, short knobs (6–10 per μm2), and at least 12 large pores in the right valve. Other potentially undescribed species of spiny-surfaced Prorocentrum are discussed.
URI: http://hdl.handle.net/10553/119943
ISSN: 0022-3646
DOI: 10.1111/jpy.13298
Source: Journal of Phycology [ISSN 0022-3646], (Enero 2022)
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