The Global, Complex Phenomena of Harmful Algal Blooms

Glibert, Patricia M.; Anderson, Donald M.; Gentien, Patrick; Granéli, Edna; Sellner, Kevin G.

doi:10.5670/oceanog.2005.49

Cited by 429 publications

(297 citation statements)

References 10 publications

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“…Harmful algal blooms and accumulation of phycotoxins in marine organisms pose a serious risk for human health (Glibert et al, 2005). Among the many known toxins of microalgal origin, azaspiracids (AZA) are a relatively new class of lipophilic compounds responsible for Azaspiracid Shellfish Poisoning (AZP).…”

Section: Introductionmentioning

confidence: 99%

Azadinium poporum from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate

et al. 2016

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Section: Introductionmentioning

confidence: 99%

Azadinium poporum from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate

et al. 2016

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“…Dinoflagellates are notable for their symbioses with coral (2), the production of harmful algal blooms termed red tides (3), and their spectacular bioluminescence (4). Dinoflagellates also display several unusual cytological and biochemical features.…”

mentioning

confidence: 99%

Dinoflagellate tandem array gene transcripts are highly conserved and not polycistronic

Beauchemin

Roy

Daoust

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

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Dinoflagellates are an important component of the marine biota, but a large genome with high–copy number (up to 5,000) tandem gene arrays has made genomic sequencing problematic. More importantly, little is known about the expression and conservation of these unusual gene arrays. We assembled de novo a gene catalog of 74,655 contigs for the dinoflagellate Lingulodinium polyedrum from RNA-Seq (Illumina) reads. The catalog contains 93% of a Lingulodinium EST dataset deposited in GenBank and 94% of the enzymes in 16 primary metabolic KEGG (Kyoto Encyclopedia of Genes and Genomes) pathways, indicating it is a good representation of the transcriptome. Analysis of the catalog shows a marked underrepresentation of DNA-binding proteins and DNA-binding domains compared with other algae. Despite this, we found no evidence to support the proposal of polycistronic transcription, including a marked underrepresentation of sequences corresponding to the intergenic spacers of two tandem array genes. We also have used RNA-Seq to assess the degree of sequence conservation in tandem array genes and found their transcripts to be highly conserved. Interestingly, some of the sequences in the catalog have only bacterial homologs and are potential candidates for horizontal gene transfer. These presumably were transferred as single-copy genes, and because they are now all GC-rich, any derived from AT-rich contexts must have experienced extensive mutation. Our study not only has provided the most complete dinoflagellate gene catalog known to date, it has also exploited RNA-Seq to address fundamental issues in basic transcription mechanisms and sequence conservation in these algae.

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“…Phytoplankton are microscopic autotrophic organisms and can be responsible for FHABs [39]. Certainly not all phytoplankton are harmful as they are a necessary component of the lake ecosystem, photosynthesizing sunlight and converting it along with carbon dioxide into organic compounds that can be consumed by heterotrophic organisms in the water.…”

Section: Biological Ecosystemmentioning

confidence: 99%

Sustainable Management of Eutrophic Lakes and Reservoirs

Wagner¹,

Erickson²

2017

JEP

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Eutrophication of lakes and reservoirs is a major water quality problem that poses significant environmental, economic and social threats around the world. Monitoring and managing lakes and reservoirs to prevent or limit eutrophication, therefore, has significant value. The literature has been reviewed to study ecological engineering and management methods that have been and can be applied to improve water quality. Ecological engineering has the potential to be utilized to improve the design and operation of lakes and reservoirs through monitoring and active management of biological, chemical and physical components. Phosphorus concentrations can be reduced by effective and sustainable management practices to improve water quality.

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The Global, Complex Phenomena of Harmful Algal Blooms

Cited by 429 publications

References 10 publications

Azadinium poporum from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate

Azadinium poporum from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate

Dinoflagellate tandem array gene transcripts are highly conserved and not polycistronic

Sustainable Management of Eutrophic Lakes and Reservoirs

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