Abstract:

During the last three decades, a plethora of studies have been performed on the effect of viral lysis on the diversity and mortality of marine microorganism. Viral diversity has also become a big issue and a tremendous diversity has been found in the marine realm. When viruses lyse cells the cell content and cell wall fragments are released in the surrounding water. The effect of this process is less well studied. Lysis products are on the one hand easily degradable (cell content) which lubricates the microbial food web and activity. On the other hand, cell wall fragments are more refractory and virus-enhanced activity of microorganisms will also increase the refractory part of the organic matter pool (microbial carbon pump). In addition, viruses can also affect the co-aggulation of organic matter and hence the export of this material into the deep sea (biological pump). Here I will present the accumulating evidence that the influence of lysis on the organic matter field is significant but temporally and spatially variable for microbial diversity and activity and biogeochemical cycles.

Biography:

Dr. Markus G. Weinbauer is a CNRS-CR1 Research Scientist at Laboratoire d'Océanographique de Villefranche (LOV). He received his Ph.D. from the University of Vienna (Austria), and performed postdoctoral research in US, Germany and The Netherlands. Dr. Weinbauer's research expertise is in marine microbial ecology, ecology of marine bacteriophages, molecular tools in microbial ecology, microbe-coral interactions and effects of aerosols on the diversity and functioning of marine food webs.

Conference ID (For Tencent): 159 943 453

Tencent (騰訊會議) Link: https://meeting.tencent.com/s/vY35F7eDL3xy