Marine microalgae support world fisheries production and influence climate through various mechanisms. They are also responsible for harmful blooms that adversely impact coastal ecosystems economies. Optimal growth survival of many bloom-forming microalgae, including climatically important dinoflagellates coccolithophores, requires the close association specific bacterial species, but reasons these associations unknown. Here, we report several clades Marinobacter ubiquitously found in with...

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 359:1-10 (2008) - DOI: https://doi.org/10.3354/meps07454 Increasing relative abundance of Porites astreoides on Caribbean reefs mediated by an overall decline in coral cover Daniel H. Green, Peter J. Edmunds*, Robert C. Carpenter Department Biology, California State University, 18111 Nordhoff Street,...

Gymnodinium catenatum is one of several dinoflagellates that produce a suite neurotoxins called the paralytic shellfish toxins (PST), responsible for outbreaks poisoning in temperate and tropical waters. Previous research suggested bacteria associated with surface sexual resting stages (cyst) were important to production PST by G. catenatum. This study sought characterise cultivable bacterial diversity seven different strains both high abnormally low amounts PST, long-term aim understanding...

Abstract. A range of bubble and sea spray aerosol generators has been tested in the laboratory compared with oceanic measurements from literature. We have shown that method generation a significant influence on properties particles produced. Hence, validity system to mimic atmospheric is dependent its capacity for generating bubbles realistic manner. bubble-bursting generator which produces by water impingement was best reproduce spectral shapes, confirms previous findings. Two porous...

Abstract. The effect of biogenic dissolved and colloidal organic matter on the production submicron primary sea-spray aerosol was investigated via simulation bubble bursting in seawater enriched with phytoplankton-released organics. Seawater samples collected along a transect off West African coast during RHaMBLe cruise (RRS Discovery D319), conducted as part SOLAS UK program, were analysed order to identify dominant oceanic algal species region high biological activity. Cultures microalgal...

Abstract. The effect of nanogel colloidal and dissolved organic matter <0.2 μm, secreted by marine biota, on the hygroscopic growth droplet activation behaviour primary aerosol was studied. Seawater proxies were prepared combination artificial seawater devoid organics natural enriched in exudate released laboratory-grown phytoplankton cultures, as described a companion paper. produced bubble bursting, using plunging multijet system an generator. generated from with presented volume...

A photosynthesis-driven biophotovoltaic system with an Al-anode powered a microprocessor widely used in IoT applications stably for over six months.

Macroalgae are multicellular, aquatic autotrophs that play vital roles in global climate maintenance and have diverse applications biotechnology eco-engineering, which directly linked to their multicellularity phenotypes. However, genomic diversity the evolutionary mechanisms underlying these organisms remain uncharacterized. In this study, we sequenced 110 macroalgal genomes from climates phyla, identified key features distinguish them microalgal relatives. Genes for cell adhesion,...

Phylogenetic and phenotypic analysis of cultivable marine bacteria isolated from laboratory cultures two paralytic shellfish toxin-producing dinoflagellates, Gymnodinium catenatum Alexandrium tamarense , showed the presence a novel group Gram-negative, aerobic, moderately halophilic hydrocarbon-degrading bacteria, related to genus Marinobacter . The strains, designated DG893 T DG1136 ATAM407-13, grew optimally in media with 3–6 % NaCl at 25–30 °C, all could utilize n-hexadecane n-tetradecane...

A strictly aerobic, halotolerant, rod-shaped bacterium, designated strain TG408, was isolated from a laboratory culture of the marine diatom Skeletonema costatum (CCAP1077/1C) by enrichment with polycyclic aromatic hydrocarbons (PAHs) as sole carbon source. 16S rRNA gene sequence analysis placed this organism within order Xanthomonadales class Gammaproteobacteria. Its closest relatives included representatives Hydrocarboniphaga-Nevskia-Sinobacter clade (<92% similarity) in family...

In this study, we describe the isolation and characterization of a new exopolymer that exhibits high emulsifying activities against range oil substrates demonstrates differential capacity to desorb various mono-, di-, trivalent metal species from marine sediment under nonionic seawater ionic-strength conditions. This polymer, PE12, was produced by isolate, Pseudoalteromonas sp. strain TG12 (accession number EF685033), during growth in modified Zobell's 2216 medium amended with 1% glucose....

Vibrioferrin (VF) is a member of the carboxylate class siderophores originally isolated from Vibrio parahaemolyticus, an enteropathogenic estuarine bacterium often associated with seafood-borne gastroenteritis. Recently we have also this siderophore several species Marinobacter, which are closely or "symbiotic" toxic, bloom-forming dinoflagellates such as Gymnodinium catenatum. We measured overall metal−ligand binding constant for iron-vibrioferrin (FeVF) 1024.02(5) making vibrioferrin one...

Coccolithophores are unicellular calcifying marine phytoplankton that can form large and conspicuous blooms in the oceans make significant contributions to oceanic carbon cycling atmospheric CO 2 regulation. Despite their importance, bacterial diversity associated with these algae has not been explored for ecological or biotechnological reasons. Bacterial membership of Emiliania huxleyi Coccolithus pelagicus f. braarudii cultures was assessed using cultivation cultivation-independent...

ABSTRACT Bacillus subtilis is currently used as an oral probiotic. We examined two commercial B. probiotic preparations, Enterogermina and Biosubtyl. Surprisingly, physiological genetic characterization of the bacteria contained in each these preparations has shown that neither contains .

In 1999, a 49,000 km 2 area in western Scottish waters was closed to shellfish harvesting due the amnesic poisoning (ASP) toxin domoic acid (DA). The only previously confirmed DA producer identified had been Pseudo‐nitzschia australis Frenguelli. has appeared every year since and led more closures. We isolated cultured two strains of seriata f. (P. T. Cleve) H. Peragallo from 2001 2002. They were using TEM analysis their morphological fine structure sequencing internal transcribed spacer...

Journal Article Glycoprotein emulsifiers from two marine Halomonas species: chemical and physical characterization Get access T. Gutiérrez, Gutiérrez Microbial Molecular Biology Department, Scottish Association for Marine Science, Dunstaffnage Laboratory, Oban, Scotland, UK Search other works by this author on: Oxford Academic Google Scholar B. Mulloy, Mulloy Laboratory Structure, National Institute Biological Standards Control (NIBSC), Hertfordshire, England, K. Black, Black D. H. Green...

The known siderophore vibrioferrin has been isolated from species of Marinobacter required for the growth toxic, bloom forming dinoflagellate Gymnodinium catenatum. A number unique attributes this siderophore, including its ability to bind boron, may provide important clues as nature and related algal-bacterial relationships.

Interactions with the bacterial community are increasingly considered to have a significant influence on marine phytoplankton populations. Here we used simplified dinoflagellate‐bacterium experimental culture model conclusively demonstrate that toxic dinoflagellate Gymnodinium catenatum H. W. Graham requires growth‐stimulatory bacteria for postgermination survival and growth, from point of resting cyst germination through vegetative growth at bloom concentrations (10 3 cells · mL −1 ). Cysts...

A strictly aerobic, halotolerant, Gram-stain-negative, rod-shaped bacterium, designated strain DG1253(T), was isolated from a laboratory culture of the marine dinoflagellate Lingulodinium polyedrum (CCAP 1121/2). The able to degrade two- and three-ring polycyclic aromatic hydrocarbons. It exhibited narrow nutritional spectrum, preferring utilize aliphatic hydrocarbon compounds small organic acids. Cells produced surface blebs contained single polar flagellum. predominant isoprenoid quinone...

Marine phytoplankton cells grow in close association with a complex microbial associate community known to affect the growth, behavior, and physiology of algal host. The relative scale importance these effects compared other major factors governing cell growth remain unclear. Using algal-bacteria co-culture models based on toxic dinoflagellate Gymnodinium catenatum, we tested hypothesis that bacteria exert an independent effect host growth. Batch co-cultures G. catenatum were grown under...