Francisco J. Acosta, David Kamanda Ngugi, Ulrich Stingl
Abstract Background Picoeukaryotes are protists ≤ 3 μm composed of a wide
diversity of taxonomic groups. They are an important constituent of the ocean’s
microbiota and perform essential ecological roles in marine nutrient and carbon
cycles. Despite their importance, the true extent of their diversity has only
recently been uncovered by molecular surveys that resulted in the discovery of a
substan... hiện toàn bộ
Matthew Fuszard, Phillip C. Wright, Catherine A. Biggs
Abstract Background The well-lit surface waters of oligotrophic gyres
significantly contribute to global primary production. Marine cyanobacteria of
the genus Prochlorococcus are a major fraction of photosynthetic organisms
within these areas. Labile phosphate is considered a limiting nutrient in some
oligotrophic regions such as the Caribbean Sea, and as such it is crucial to
understand the physi... hiện toàn bộ
Pearse McCarron, Alan C Logan, Sabrina D Giddings, Michael A Quilliam
Over the last decade the amino acid beta-N-methylamino-L-alanine (BMAA) has come
under intense scrutiny. International laboratory and epidemiological research
continues to support the hypothesis that environmental exposure to BMAA (e.g.,
through dietary practices, water supply) can promote the risk of various
neurodegenerative diseases. A wide variety of cyanobacteria spp. have previously
been rep... hiện toàn bộ
Daniel Guzmán, Andrea Balderrama-Subieta, Carla Cardona-Ortuño, Mónica Guevara-Martínez, Nataly Callisaya-Quispe, Jorge Quillaguamán
Halomonas boliviensis is a halophilic bacterium that is included in the
γ-Proteobacteria sub-group, and is able to assimilate different types of
carbohydrates. H. boliviensis is also able to produce poly(3-hydroxybutyrate)
(PHB) in high yields using glucose as the carbon precursor. Accumulation of PHB
by microorganisms is induced by excess of intracellular NADH. The genome
sequences and organizati... hiện toàn bộ
Fulvio Cerfolli, Bruno Bellisario, Corrado Battisti
Despite the plethora of approaches, the sensitivity of the methods to measure
the relationship between the abundance and biomass curves in stressed
detritus-based ecosystems still remain to be refined. In this work, we report
the comparison between biomass and abundance in a set of detritus-based
macrozoobenthic assemblages located in six sampling pools with different
salinity in an artificial aqu... hiện toàn bộ