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Virus‐induced spore formation as a defense mechanism in marine diatoms

Pelusi, Angela ; De Luca, Pasquale ; Manfellotto, Francesco ; Thamatrakoln, Kimberlee ; Bidle, Kay D. ; Montresor, Marina

The New phytologist, 2021-02, Vol.229 (4), p.2251-2259 [Periódico revisado por pares]

England: Wiley Subscription Services, Inc

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Título:
Virus‐induced spore formation as a defense mechanism in marine diatoms
Autor: Pelusi, Angela ; De Luca, Pasquale ; Manfellotto, Francesco ; Thamatrakoln, Kimberlee ; Bidle, Kay D. ; Montresor, Marina
Assuntos: Algae ; Blooms ; Carbon ; Carbon cycle ; Chaetoceros socialis ; Defence mechanisms ; Defense Mechanisms ; Diatoms ; DNA Viruses ; Exports ; Infections ; Life cycle ; Life cycles ; Lysis ; Marine microorganisms ; Mortality ; Nucleic acids ; Nutrient cycles ; Nutrients ; Phytoplankton ; Resting spores ; Ribonucleic acid ; RNA ; single‐stranded RNA virus ; Spores ; Sporogenesis ; Viral infections ; Virions ; Viruses
É parte de: The New phytologist, 2021-02, Vol.229 (4), p.2251-2259
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SourceType-Scholarly Journals-1
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Descrição: Summary Algal viruses are important contributors to carbon cycling, recycling nutrients and organic material through host lysis. Although viral infection has been described as a primary mechanism of phytoplankton mortality, little is known about host defense responses. We show that viral infection of the bloom‐forming, planktonic diatom Chaetoceros socialis induces the mass formation of resting spores, a heavily silicified life cycle stage associated with carbon export due to rapid sinking. Although viral RNA was detected within spores, mature virions were not observed. ‘Infected’ spores were capable of germinating, but did not propagate or transmit infectious viruses. These results demonstrate that diatom spore formation is an effective defense strategy against viral‐mediated mortality. They provide a possible mechanistic link between viral infection, bloom termination, and mass carbon export events and highlight an unappreciated role of viruses in regulating diatom life cycle transitions and ecological success.
Editor: England: Wiley Subscription Services, Inc
Idioma: Inglês

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Virus‐induced spore formation as a defense mechanism in marine diatoms

Pelusi, Angela ; De Luca, Pasquale ; Manfellotto, Francesco ; Thamatrakoln, Kimberlee ; Bidle, Kay D. ; Montresor, Marina

England: Wiley Subscription Services, Inc

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