NDLI: Elevated Lytic Phage Production as a Consequence of Particle Colonization by a Marine Flavobacterium (Cellulophaga sp.)

Content Provider	Springer Nature Link
Author	Riemann, Lasse Grossart, Hans Peter
Copyright Year	2008
Abstract	Bacteria growing on marine particles generally have higher densities and cell-specific activities than free-living bacteria. Since rapidity of phage adsorption is dependent on host density, while infection productivity is a function of host physiological status, we hypothesized that marine particles are sites of elevated phage production. In the present study, organic-matter-rich agarose beads and a marine phage–host pair (Cellulophaga sp., ΦSM) were used as a model system to examine whether bacterial colonization of particles increases phage production. While no production of phages was observed in plain seawater, the presence of beads enhanced attachment and growth of bacteria, as well as phage production. This was observed because of extensive lysis of bacteria in the presence of beads and a subsequent increase in phage abundance both on beads and in the surrounding water. After 12 h, extensive phage lysis reduced the density of attached bacteria; however, after 32 h, bacterial abundance increased again. Reexposure to phages and analyses of bacterial isolates suggested that this regrowth on particles was by phage-resistant clones. The present demonstration of elevated lytic phage production associated with model particles illustrates not only that a marine phage has the ability to successfully infect and lyse surface-attached bacteria but also that acquisition of resistance may affect temporal phage–host dynamics on particles. These findings from a model system may have relevance to the distribution of phage production in environments rich in particulate matter (e.g., in coastal areas or during phytoplankton blooms) where a significant part of phage production may be directly linked to these nutrient-rich “hot spots.”
Starting Page	505
Ending Page	512
Page Count	8
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	56
Issue Number	3
e-ISSN	1432184X
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-03-18
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Nature Conservation Geoecology/Natural Processes Microbial Ecology Ecology Microbiology
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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