<i>Pseudo‐nitzschia nanaoensis</i> sp. nov. (Bacillariophyceae) from the Chinese coast of the South China Sea

Yang, Li; Huan, Dong; Teng, Sing Tung; Bates, Stephen S.; Lim, Po Teen

doi:10.1111/jpy.12791

Cited by 16 publications

(7 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…cingulata and P. pungens var. aveirensis, 20-24 and 21-25, respectively) [26,27], (ii) the density of fibulae in 10 µm (5-18) that slightly diverges from that reported in Danish coastal waters (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) [48], and (iii) the density of poroids in 1 µm (1-4) that slightly diverges from that reported in the Pacific coast of USA (Washington State) (4-5) [51] (Table 1).…”

Section: Discussionmentioning

confidence: 81%

See 1 more Smart Citation

Morphological Variability of Pseudo-nitzschia pungens Clade I (Bacillariophyceae) in the Northwestern Adriatic Sea

Accoroni

Giulietti

Romagnoli

et al. 2020

Plants

View full text Add to dashboard Cite

Pseudo-nitzschia pungens is a common component of the phytoplankton community of the northern Adriatic Sea. In this study, an in-depth morphological analysis of P. pungens was carried out in both cultured strains isolated in different periods and field samples, revealing a surprisingly wide variability in a number of details, with both the gross morphology and ultrastructural levels deviating from the nominal P. pungens. Colonies showed an overlap (from one-third to one-sixth) and a transapical axis (rarely reaching 3 µm), strongly differing from the original description of the species. Moreover, valves may be either symmetrical or slightly asymmetrical, with striae almost always biseriate but sometimes uniseriate or triseriate. Poroids’ morphology in cingular bands was characterized by a wide variability (square, circular, or rectangular poroids without or with up to two hymen sectors), with several combination of them, even within the same cingular band. Phylogenetic analyses based on ITS rDNA showed that the P. pungens of the northern Adriatic Sea belonged to clade I. Domoic acid was not detected.

show abstract

Section: Discussionmentioning

confidence: 81%

“…With the description of several new Pseudo-nitzschia species, detailing and comparing additional ultrastructural characters has become necessary [6][7][8]. Indeed, several species not easily distinguishable using LM have been described using electron microscopy (EM) coupled with molecular techniques [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Morphological Variability of Pseudo-nitzschia pungens Clade I (Bacillariophyceae) in the Northwestern Adriatic Sea

Accoroni

Giulietti

Romagnoli

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

“…However, both species can be readily distinguished by comparing the density of fibulae and striae and the number of poroids in 1 μm. P. subpacifica has a higher overall density (14-21, 25-33 and 7-10, respectively) of striae, compared to P. heimii (11)(12)(13)(14)(15)(16)(17)(18)19-30 and 7-8, respectively). P. subpacifica can also be misidentified as P. bipertita.…”

Section: Plos Onementioning

confidence: 95%

“…Pseudo-nitzschia is one of the most common diatom genus, belonging to the Bacillariaceae family. It is a cosmopolitan genus that comprises at least 52 species [7][8][9][10][11][12][13]. It has been documented that many species are capable of producing the neurotoxin domoic acid (DA) under stressed conditions [11].…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic relationships of Pseudo-nitzschia subpacifica (Bacillariophyceae) from the Mexican Pacific, and its production of domoic acid in culture

et al. 2020

View full text Add to dashboard Cite

Pseudo-nitzschia is a cosmopolitan genus, some species of which can produce domoic acid (DA), a neurotoxin responsible for the Amnesic Shellfish Poisoning (ASP). In this study, we identified P. subpacifica for the first time in Todos Santos Bay and Manzanillo Bay, in the Mexican Pacific using SEM and molecular methods. Isolates from Todos Santos Bay were cultivated under conditions of phosphate sufficiency and deficiency at 16˚C and 22˚C to evaluate the production of DA. This toxin was detected in the particulate (DAp) and dissolved (DAd) fractions of the cultures during the exponential and stationary phases of growth of the cultures. The highest DA concentration was detected during the exponential phase grown in cells maintained in P-deficient medium at 16˚C (1.14 ± 0.08 ng mL-1 DAd and 4.71 ± 1.11 × 10 −5 ng cell-1 of DAp). In P-sufficient cultures DA was higher in cells maintained at 16˚C (0.25 ± 0.05 ng mL-1 DAd and 9.41 ± 1.23 × 10 −7 ng cell-1 of DAp) than in cells cultured at 22˚C. Therefore, we confirm that P. subpacifica can produce DA, especially under P-limited conditions that could be associated with extraordinary oceanographic events such as the 2013-2016 "Blob" in the northeastern Pacific Ocean. This event altered local oceanographic conditions and possibly generated the presence of potential harmful species in areas with economic importance on the Mexican Pacific coast.

show abstract

“…Recently, several new species have been discovered and described (Li et al. 2018), leading Li et al. (2017) and Huang et al.…”

mentioning

confidence: 99%

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

Chen

Pang

Huang

et al. 2020

Journal of Phycology

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Pseudo‐nitzschia nanaoensis sp. nov. (Bacillariophyceae) from the Chinese coast of the South China Sea

Cited by 16 publications

References 16 publications

Morphological Variability of Pseudo-nitzschia pungens Clade I (Bacillariophyceae) in the Northwestern Adriatic Sea

Morphological Variability of Pseudo-nitzschia pungens Clade I (Bacillariophyceae) in the Northwestern Adriatic Sea

Phylogenetic relationships of Pseudo-nitzschia subpacifica (Bacillariophyceae) from the Mexican Pacific, and its production of domoic acid in culture

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

Contact Info

Product

Resources

About