Species composition and toxicity of the genus Pseudo-nitzschia in Taiwan Strait, including P. chiniana sp. nov. and P. qiana sp. nov.

Huang, Chun Xiu; Huan, Dong; Lundholm, Nina; Teng, Sing Tung; Zheng, Guan Chao; Tan, Zhi Jun; Lim, Po Teen; Yang, Li

doi:10.1016/j.hal.2019.04.003

Cited by 41 publications

(21 citation statements)

References 57 publications

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“…LELONG et al (2012) reported 37 Pseudo-nitzschia species, of which, 14 were toxic. To date, this genus com-prises 60 described species, among which, 26 are confirmed toxic (BATES et al, 2018;HUANG et al, 2019;LUNDHOLM, 2019). Laboratory studies have shown that toxin production by Pseudo-nitzschia species is complex because species toxicity is influenced by abiotic (silicates or phosphates limitation, inorganic or organic nitrogen forms, temperature, salinity, irradiance) and biotic (bacteria, zooplankton) factors, as well as interactions between two or more factors (reviewed in LELONG et al, 2012;TRAINER et al, 2012;BATES et al, 2018).…”

Section: Introductionmentioning

confidence: 92%

Prvi nalaz proizvodnje domoične kiseline u kulturama vrste Pseudo-nitzschia calliantha iz srednjeg Jadrana

Arapov

Ujević

Straka

et al. 2020

Acta Adriat. (Online)

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In this study, three isolates of the potentially toxic diatom genus Pseudo-nitzschia were analysed for morphological and toxicological features. Cultures of Pseudo-nitzschia were established from seawater samples collected from the southern part of the Velebit Channel (central Adriatic Sea) during February 2019. All culture isolates were identified by scanning electron microscopy (SEM) as Pseudo-nitzschia calliantha. Domoic acid (DA) production was confirmed in all isolates analysed. The highest concentrations of cellular DA were found in early culture stages, with the lowest cell abundance, for all P. calliantha isolates. This study is the first to report DA production by P.calliantha isolated from the Adriatic Sea.

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Section: Introductionmentioning

confidence: 92%

Prvi nalaz proizvodnje domoične kiseline u kulturama vrste Pseudo-nitzschia calliantha iz srednjeg Jadrana

Arapov

Ujević

Straka

et al. 2020

Acta Adriat. (Online)

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“…To date, the genus of marine diatoms Pseudo-nitzschia H. Pergallo consists of 54 described species (Bates et al, 2018;Huang et al, 2019). Pseudo-nitzschia species are distributed worldwide, from tropical to polar areas (Lelong et al, 2012;Trainer et al, 2012;Bates et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

High proliferation of Pseudo-nitzschia cf. arenysensis in the Adriatic Sea: ecological and morphological characterisation

et al. 2020

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The aim of the present study isto characterise the diatom Pseudo-nitzschia community during a bloom period together with environmental conditions. High proliferation of Pseudo-nitzschia spp. was observed in September 2017 at the shellfish breeding area in the Krka River estuary (Central eastern Adriatic Sea). The peak of abundance (1.8 x 106 cells L-1) was recorded at 7 m depth, and the increased abundance persisted for four weeks.Morphological analyses of field samples based on scanning electron microscopy (SEM) revealed that Pseudo-nitzschia cf. arenysensis was prevailing (94%) in the Pseudo-nitzschia assemblage. Several strains were successfully isolated from net samples in order to better define morphological features and phylogenetic characterisation. The isolated Pseudo-nitzschia strains corresponded morphologically to the P. cf. arenysensis from the field samples, based on our SEM observations. Phylogenetic analysis demonstrated that the Croatian strains grouped with P. arenysensis using the ITS and LSU rDNA sequences. Spearman rank correlation showed that salinity was an important environmental factor affecting the vertical distribution of Pseudo-nitzschia spp. in this highly variable area. Availability of increased concentration of orthophosphates and ammonium and low Si: TIN ratio may have promoted the bloom of P. cf. arenysensis in the estuary.

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“…2017, Huang et al. 2017a,b,c, 2019), in field phytoplankton net samples (Jiang et al. 2017), and in different kinds of shellfish (e.g., clams, Meretrix meretix ; scallops, Chlamys farreri ; and mussels, Mytilus coruscus ; Li et al.…”

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confidence: 99%

Two New and Nontoxigenic Pseudo‐nitzschia species (Bacillariophyceae) from Chinese Southeast Coastal Waters

Chen

Pang

Huang

et al. 2020

Journal of Phycology

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To explore the species diversity and toxin profile of Pseudo‐nitzschia, monoclonal strains were established from Chinese southeast coastal waters. The morphology was examined under light and transmission electron microscopy. The internal transcribed spacer region of ribosomal DNA was sequenced for phylogenetic analyses, and the secondary structure of ITS2 was predicted and compared among allied taxa. A combination of morphological and molecular data showed the presence of two new species, Pseudo‐nitzschia hainanensis sp. nov. and Pseudo‐nitzschia taiwanensis sp. nov. Pseudo‐nitzschia hainanensis was characterized by a dumpy‐lanceolate valve with slightly blunt apices and a central nodule, as well as striae comprising two rows of poroids. Pseudo‐nitzschia taiwanensis was characterized by a slender‐lanceolate valve, and striae comprising one row of split poroids. The poroid structure mainly comprised two sectors. Both taxa constituted their own monophyletic lineage in the phylogenetic analyses inferred from ITS2 rDNA and were well differentiated from other Pseudo‐nitzschia species. Morphologically, P. hainanensis and P. taiwanensis could be assigned to the Pseudo‐nitzschia delicatissima and the Pseudo‐nitzschia pseudodelicatissima complex, respectively. Particulate domoic acid was measured using liquid chromatography coupled with tandem mass spectrometry (LC‐MS/MS), but no detectable pDA was found. With the description of the two new species, the species diversity of genus Pseudo‐nitzschia reaches 58 worldwide, among which 31 have been recorded from Chinese coastal waters.

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Species composition and toxicity of the genus Pseudo-nitzschia in Taiwan Strait, including P. chiniana sp. nov. and P. qiana sp. nov.

Cited by 41 publications

References 57 publications

Prvi nalaz proizvodnje domoične kiseline u kulturama vrste Pseudo-nitzschia calliantha iz srednjeg Jadrana

Prvi nalaz proizvodnje domoične kiseline u kulturama vrste Pseudo-nitzschia calliantha iz srednjeg Jadrana

High proliferation of Pseudo-nitzschia cf. arenysensis in the Adriatic Sea: ecological and morphological characterisation

Two New and Nontoxigenic Pseudo‐nitzschia species (Bacillariophyceae) from Chinese Southeast Coastal Waters

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