Cyanobacterial viruses exhibit diurnal rhythms during infection
Gene Expression Regulation, Viral
Synechococcus
0301 basic medicine
Light
Photoperiod
Biological Sciences
Virus Replication
Light-dark cycle
Virus
Circadian Rhythm
3. Good health
03 medical and health sciences
Virus Diseases
13. Climate action
Cyanophage
Host-Pathogen Interactions
Diurnal rhythm
Bacteriophages
14. Life underwater
Photosynthesis
Cyanobacterium
Prochlorococcus
DOI:
10.1073/pnas.1819689116
Publication Date:
2019-06-25T13:13:29Z
AUTHORS (5)
ABSTRACT
Significance
To adapt to the daily light–dark cycle, diurnal rhythms are used by the photosynthetic cyanobacteria
Prochlorococcus
and
Synechococcus
, which are the most abundant photosynthetic organisms on earth. Field studies revealed that cyanobacterial virus (cyanophage) populations in the oceans showed transcriptional rhythms. To explore the underlying mechanism, we used cyanophage laboratory cultures to find that some showed adsorption rhythms and all showed transcriptional rhythms. We discovered that the cyanophage transcriptional rhythm is partially caused by the photosynthetic activity of host cells, explaining transcriptional rhythms of field cyanophage populations. Our study shows that cultured viruses have diurnal infection rhythms which are critical for understanding how light–dark cycles shape the interaction of cyanophages and their hosts in the oceans.
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CITATIONS (46)
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