Category: Dinoflagellate genomics

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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…

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An assessment on the intrapopulational and intraindividual genetic diversity in LSU rDNA in the harmful algal blooms-forming dinoflagellate Margalefidinium (= Cochlodinium) fulvescens based on clonal cultures and bloom sample…

Large subunit ribosomal DNA (LSU rDNA) sequences have been increasingly used to infer the phylogeny and species identity of organisms, a few previous studies, however, have observed high intraspecific and even intraindividual variability in LSU rDNA in some dinoflagellate species due to, assumably, large copy numbers of rDNA in dinoflagellates. Since the copy number of LSU rDNA varies tremendously among dinoflagellate species, the intraspecific and intraindividual diversity for a species of…

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Sex in Symbiodiniaceae dinoflagellates: genomic evidence for independent loss of the canonical synaptonemal complex.
Sci Rep. 2020 Jun 17;10(1):9792
Authors: Shah S, Chen Y, Bhattacharya D, Chan CX
…

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Lineage dynamics of the endosymbiotic cell type in the soft coral Xenia.
Nature. 2020 Jun 17;:
Authors: Hu M, Zheng X, Fan CM, Zheng Y
Abstract
Many corals harbour symbiotic dinoflag…