4 results match your criteria Aquatic Microbial Ecology[Journal]

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Role of dissolved nitrate and phosphate in isolates of and toxin-producing .

Aquat Microb Ecol 2015 24;75(2):169-185. Epub 2015 Jun 24.

Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA.

, a producer of toxins associated with diarrhetic shellfish poisoning (DSP) and/or pectenotoxins (PTXs), is a mixotrophic species that requires both ciliate prey and light for growth. Linkages have been described in the literature between natural abundances of the predator and its prey, , and culture experiments have demonstrated that prey, in addition to light, is required for toxin production by ; together these suggest is a critical component for growth and toxicity. However, little is known about the role of dissolved inorganic nutrients on growth or that of toxin-producing . Read More

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Viral ecology of organic and inorganic particles in aquatic systems: avenues for further research.

Aquat Microb Ecol 2009 Dec 24;57(3):321-341. Epub 2009 Nov 24.

IRD, UMR 5119 ECOLAG, Noumea Center, BP A5, NC-98848 Noumea, New Caledonia.

Viral abundance and processes in the water column and sediments are well studied for some systems; however, we know relatively little about virus-host interactions on particles and how particles influence these interactions. Here we review virus-prokaryote interactions on inorganic and organic particles in the water column. Profiting from recent methodological progress, we show that confocal laser scanning microscopy in combination with lectin and nucleic acid staining is one of the most powerful methods to visualize the distribution of viruses and their hosts on particles such as organic aggregates. Read More

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December 2009

Effects of suspended matter quality and virus abundance on microbial parameters: experimental evidence from a large European river.

Aquat Microb Ecol 2009 Nov;57(2):161-173

Department of Freshwater Ecology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.

In riverine water, both suspended particulate material and viruses are prominent ecological factors. The existence of various particle types and differences in viral abundance impose variability in microenvironments. Particulates and their microbial surrounding may interact in several ways, this interaction being strongly dependent on particle quality and the abundance of organisms involved. Read More

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November 2009

Deciphering diatom biochemical pathways via whole-cell proteomics.

Aquat Microb Ecol 2009 Jun;55(3):241-253

Medicinal Chemistry Department, University of Washington, Box 335351, Seattle, Washington 98195, USA.

Diatoms play a critical role in the oceans' carbon and silicon cycles; however, a mechanistic understanding of the biochemical processes that contribute to their ecological success remains elusive. Completion of the Thalassiosira pseudonana genome provided 'blueprints' for the potential biochemical machinery of diatoms, but offers only a limited insight into their biology under various environmental conditions. Using high-throughput shotgun proteomics, we identified a total of 1928 proteins expressed by T. Read More

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