Large subunit ribosomal RNA gene variation and sequence heterogeneity of Dinophysis (Dinophyceae) species from Scottish coastal waters

Hart, Michael W.; Green, David H.; Bresnan, Eileen; Bolch, Christopher J. S.

doi:10.1016/j.hal.2006.10.001

Cited by 37 publications

(31 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the phylogenetic analysis of the rDNA gene region, the sequences obtained in this study co-resided with most sequences assigned to species of the D. acuminata complex onto the well-supported Cluster I. Single nucleotide substitutions resulted in random branch lengths of several sequences without forming dichotomies, confirming the common appreciation of the high rDNA genes conservation within the complex that disallows for species identification (Edvardsen et al, 2003;Hart et al, 2007). It is worth noting also that sequences of erroneously identified dinoflagellate species, not re-verified by [ ( F i g .…”

Section: Discussionsupporting

confidence: 59%

Exploring the identity of the Greek Dinophysis cf. acuminata

2010

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 59%

Exploring the identity of the Greek Dinophysis cf. acuminata

2010

View full text Add to dashboard Cite

“…In the case of Dinophysis, sequence comparisons of the D1-D2 LSU regions of different species have identified two major clades, and little variation between D acuminata, D. acuta and D. norvegica Claparè de et Lachmann (Edvardsen et al, 2003). Further, phylogeographical analysis based on LSU sequences was not successful to establish intra-specific differences between Dinophysis isolates from different locations (Hart et al, 2007).…”

Section: Dinophysis Acuminata Claparè De Et Lachmann and D Acutamentioning

confidence: 94%

“…Molecular biology may provide powerful tools to improve identification of organisms in the laboratory, as well as in field samples. Due to the difficulties to establish species of Dinophysis in culture, very sensitive techniques for single-cell DNA amplification were developed (Marín et al, 2001a,b;Edvardsen et al, 2003;Hart et al, 2007;Kai et al, 2006). In the last years, these techniques have generated sequences for a rank of species of Dinophysis (RehnstamHolm et al, 2002;Edvardsen et al, 2003;Hart et al, 2007) and provided an important dataset for phylogenetic studies.…”

Section: Dinophysis Acuminata Claparè De Et Lachmann and D Acutamentioning

confidence: 99%

Morphology, toxin composition and molecular analysis of Dinophysis ovum Schütt, a dinoflagellate of the “Dinophysis acuminata complex”

et al. 2008

View full text Add to dashboard Cite

“…The cell was 57.20 µm in length and 60.64 µm in height without anterior cingular lists. In the phylogenetic analysis our isolate appeared in the Dinophysis acuta lineage composed of isolates from Scotland and Ireland (Hart et al, 2007). The nucleotide sequence identity between our isolate and …”

Section: Resultsmentioning

confidence: 76%

First molecular records of potentially harmful planktonic dinoflagellatesfrom the southern Black Sea

Baytut¹,

Gürkanlı²,

Deniz³

et al. 2016

Turk J Bot

View full text Add to dashboard Cite

IntroductionDinophytes are unicellular flagellates and they are commonly called dinoflagellates. This group is characterized by flagellar arrangement, cell morphology, and the presence of a dinokaryon, the uniquely modified nucleus of most dinoflagellates (Hallegraeff et al., 2004). The cell periplast (amphiesma) consisted of flat cisternae that appear empty in some species (naked or athecate dinoflagellates) and in other species include cellulosic plates (armored or thecate dinoflagellates) (Van Den Hoek et al., 1995). These alveolate protists are trophically diverse, and about half of the dinoflagellates are phototrophs; the other half are obligate heterotrophs, free-living, or parasitic (Moestrup and Daugbjerg, 2007). Organellar loss is very common in the evolutionary history of the dinoflagellates. However, loss of function may be more common. The loss of photosynthesis has certainly been more frequent than complete loss of plastids (Saldarriaga et al., 2001). Recently, harmful dinoflagellates have received more attention as they pervade in coastal marine systems that are especially influenced by anthropogenic activities. Severe eutrophication, nutrient imbalance, and transport of the toxic strains by ballast waters have degraded aquatic ecosystem health and have created negative consequences for public health and fisheries (Hallegraeff, 2004). Negative outcomes include six types of fish and shellfish poisoning [amnesic shellfish poisoning (ASP), azaspiracid shellfish poisoning (AZP), diarrhetic shellfish poisoning (DSP), neurotoxic shellfish poisoning (NSP), paralytic shellfish poisoning (PSP), ciguatera fish poisoning (CFP)], respiratory problems, and drinking water problems (Hackett et al., 2004). In 1942, for example, 114 people living around a coastal lagoon (Lake Hamana) in Japan died after consuming oysters and clams that were later determined to include the toxin venerupin (Grzebyk et al., 1997). This toxin was later attributed to Prorocentrum minimum (Pavillard) J.Schiller. Worldwide over 300 species can form dense blooms among over 5000 marine phytoplankton taxa, while 80 species can produce toxins (Hallegraeff, 2004). About 75%-80% of toxic phytoplankton taxa are dinoflagellates (Cembella, 2003), and they cause harmful algal blooms (HABs) that may kill fish and other marine fauna.The first HAB record for the Black Sea was reported in 1954, and the organism responsible was Exuviaella cordata Ostenfeld, a synonym of an athecate dinoflagellate P.

show abstract

Large subunit ribosomal RNA gene variation and sequence heterogeneity of Dinophysis (Dinophyceae) species from Scottish coastal waters

Cited by 37 publications

References 44 publications

Exploring the identity of the Greek Dinophysis cf. acuminata

Exploring the identity of the Greek Dinophysis cf. acuminata

Morphology, toxin composition and molecular analysis of Dinophysis ovum Schütt, a dinoflagellate of the “Dinophysis acuminata complex”

First molecular records of potentially harmful planktonic dinoflagellatesfrom the southern Black Sea

Contact Info

Product

Resources

About