February 2020 archive

Cryptic species in the parasitic Amoebophrya species complex revealed by a polyphasic approach

As critical primary producers and recyclers of organic matter, the diversity of marine protists has been extensively explored by high-throughput barcode sequencing. However, classification of short metabarcoding sequences into traditional taxonomic units is not trivial, especially for lineages mainly known by their genetic fingerprints. This is the case for the widespread Amoebophrya ceratii species complex, parasites of their dinoflagellate congeners. We used genetic and phenotypic characters,…

Biosynthesis of Saxitoxin in Marine Dinoflagellates: An Omics Perspective.

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Biosynthesis of Saxitoxin in Marine Dinoflagellates: An Omics Perspective.
Mar Drugs. 2020 Feb 05;18(2):
Authors: Akbar MA, Mohd Yusof NY, Tahir NI, Ahmad A, Usup G, Sahrani FK, Bunawan H
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Detection of Helicobacter pylori Microevolution and Multiple Infection from Gastric Biopsies by Housekeeping Gene Amplicon Sequencing.

Related Articles Detection of Helicobacter pylori Microevolution and Multiple Infection from Gastric Biopsies by Housekeeping Gene Amplicon Sequencing. Pathogens. 2020 Feb 05;9(2): Authors: Palau M, Piqué N, Comeau AM, Douglas GM, Ramírez-Lázaro MJ, Lario S, Calvet X, Langille MGI, Miñana-Galbis D Abstract Despite the great efforts devoted to research on Helicobacter pylori, the prevalence of …

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Biosynthesis of Saxitoxin in Marine Dinoflagellates: An Omics Perspective

Saxitoxin is an alkaloid neurotoxin originally isolated from the clam Saxidomus giganteus in 1957. This group of neurotoxins is produced by several species of freshwater cyanobacteria and marine dinoflagellates. The saxitoxin biosynthesis pathway was described for the first time in the 1980s and, since then, it was studied in more than seven cyanobacterial genera, comprising 26 genes that form a cluster ranging from 25.7 kb to 35 kb in sequence length. Due to the complexity of the genomic…