Category: Dinoflagellate genomics

Coral evolutionary responses to microbial symbioses.
Philos Trans R Soc Lond B Biol Sci. 2020 Sep 28;375(1808):20190591
Authors: van Oppen MJH, Medina M
Abstract
This review explores how microbial s…

This review explores how microbial symbioses may have influenced and continue to influence the evolution of reef-building corals (Cnidaria; Scleractinia). The coral holobiont comprises a diverse microbiome including dinoflagellate algae (Dinophyceae; Symbiodiniaceae), bacteria, archaea, fungi and viruses, but here we focus on the Symbiodiniaceae as knowledge of the impact of other microbial symbionts on coral evolution is scant. Symbiosis with Symbiodiniaceae has extended the coral’s metabolic…

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STAGdb: a 30K SNP genotyping array and Science Gateway for Acropora corals and their dinoflagellate symbionts.
Sci Rep. 2020 Jul 27;10(1):12488
Authors: Kitchen SA, Von Kuster G, Kuntz KLV, Reich HG…

Standardized identification of genotypes is necessary in animals that reproduce asexually and form large clonal populations such as coral. We developed a high-resolution hybridization-based genotype array coupled with an analysis workflow and database for the most speciose genus of coral, Acropora, and their symbionts. We designed the array to co-analyze host and symbionts based on bi-allelic single nucleotide polymorphisms (SNP) markers identified from genomic data of the two Caribbean Acropora…

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SAGER: a database of Symbiodiniaceae and Algal Genomic Resource.
Database (Oxford). 2020 Jan 01;2020:
Authors: Yu L, Li T, Li L, Lin X, Li H, Liu C, Guo C, Lin S
Abstract
Symbiodini…

Symbiodiniaceae dinoflagellates are essential endosymbionts of reef building corals and some other invertebrates. Information of their genome structure and function is critical for understanding coral symbiosis and bleaching. With the rapid development of sequencing technology, genome draft assemblies of several Symbiodiniaceae species and diverse marine algal genomes have become publicly available but spread in multiple separate locations. Here, we present a Symbiodiniaceae and Algal Genomic…

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Genome-wide high-throughput screening of interactive bacterial metabolite in the algal population using Escherichia coli K-12 Keio collection.
Sci Rep. 2020 Jun 30;10(1):10647
Authors: Heo J, Cho K,…

Algae-bacteria interaction is one of the main factors underlying the formation of harmful algal blooms (HABs). The aim of this study was to develop a genome-wide high-throughput screening method to identify HAB-influenced specific interactive bacterial metabolites using a comprehensive collection of gene-disrupted E. coli K-12 mutants (Keio collection). The screening revealed that a total of 80 gene knockout mutants in E. coli K-12 resulted in an approximately 1.5-fold increase in algal growth…

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Nitratireductor alexandrii sp. nov., from phycosphere microbiota of toxic marine dinoflagellate Alexandrium tamarense.
Int J Syst Evol Microbiol. 2020 Jun 26;:
Authors: Jiang Z, Duan Y, Yang X, Yao …

A taxonomic study was carried out on a novel algae-associated bacterial strain Z3-1^(T), which was isolated from phycosphere microbiota of toxic marine dinoflagellate Alexandrium tamarense 880. Cells of strain Z3-1^(T) were Gram-stain-negative, rod-shaped and strictly aerobic and were motile by means of flagella. Strain Z3-1^(T) grew at 25-42 °C, pH 5.0-10.0 and 1.0-5.0 % (w/v) NaCl. Strain Z3-1^(T) reduced nitrate to nitrite, but did not reduce nitrite to nitrogen gas. Phylogenetic analysis…