Viral lysis of Phaeocystis pouchetii and bacterial secondary production

Mass sedimentation of Phaeocystis pouchetii in the Barents Sea

Mass sedimentation of gelatinous rolonies of the prymensiophyte Phaeocystis pouchetii were observed In the upper !00 m of Atlantic v> ater in the central Barents Sea. Sedimentation rates of paniculate organic carbon and nitrogen as weCl as pigments were the highest recorded so far from oceanic environments of the North Atlantic or coastal areas of Norway. High relative concentrations of phytopl...

Synergistic and antagonistic effects of viral lysis and protistan grazing on bacterial biomass, production and diversity.

In a mesotrophic reservoir, we examined the effects on the bacterioplankton of distinct consumers of bacteria, viruses and heterotrophic nanoflagellates, both alone and combined in an experiment using natural populations and in situ incubations in dialysis bags. Ribosomal RNA-targeted probes were employed as well as 16S RNA gene based PCR denaturing gradient gel electrophoresis (DGGE) to enumer...

Zooplankton distribution and feeding in the Arctic Ocean during a Phaeocystis pouchetii bloom

Bacterial lysis by lysozyme.

Observations were made on cultures obtained from three different sources: one (C) maintained for many years in this laboratory, another (4698) received from the American Type Culture Collection, and a third (F) received recently from Dr. Fleming. To our knowledge all derive from the original organism isolated by Fleming (1922). For purposes of convenience each will be designated as a separate "...

Bacterial Lysis of Microalgal Cells

This short communication reports a pioneering research of using bacteria for simultaneous algal cell disruption and cell wall/membrane utilization. Microalgae are regarded as one of the most promising feedstock that can potentially address the twin challenges of energy security and environmental protection due to their fast growth rate, high lipid content and CO2 biofixation capabilities. Howev...