Silicon limitation facilitates virus infection and mortality of marine diatoms

Kranzler, Chana; Krause, Jeffrey W.; Brzezinski, Mark A.; Edwards, Bethanie R.; Biggs, William P.; Maniscalco, Michael; McCrow, John P.; Mooy, Benjamin A. S. Van; Bidle, Kay D.; Allen, Andrew E.; Thamatrakoln, Kimberlee

doi:10.1038/s41564-019-0502-x

Cited by 70 publications

(73 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reductions in silica deposition are hypothesized to occur in association with increased pH conditions during Microcystis blooms, constraining diatom growth (Krausfeldt et al, 2019). In marine environments, silica limitation has been linked to increases in viral infection of diatoms (Kranzler et al, 2019). Acting together, nutrient limitation and viral infection could act as a negative feedback loop on diatoms that might provide an advantage for competitive species such as Microcystis.…”

Section: Resultsmentioning

confidence: 99%

The “Neglected Viruses” of Taihu: Abundant Transcripts for Viruses Infecting Eukaryotes and Their Potential Role in Phytoplankton Succession

et al. 2020

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

The “Neglected Viruses” of Taihu: Abundant Transcripts for Viruses Infecting Eukaryotes and Their Potential Role in Phytoplankton Succession

et al. 2020

View full text Add to dashboard Cite

“…Other forms of nutrient stress may have also been present. For macronutrients, a previous study demonstrated that these communities during the DYEatom cruise were primarily limited for Si despite concomitant low nitrate availability (Kranzler et al ). Given these authors made a relative comparison, N limitation could have been present at all stations, i.e., no station more limited relative to another, but this is unlikely since average [N + N] was high at multiple stations (Table ).…”

Section: Resultsmentioning

confidence: 99%

“…The offshore stations (Sta. 6, 9) had more diverse assemblages with reads associated with dinoflagellates and haptophytes representing 5–30% and 0–18% of the total, respectively (Kranzler et al ). Among diatoms, Pseudo‐nitzschia was the most abundant genus in the upper euphotic zone of the Monterey Bay domain and offshore at Sta.…”

Section: Resultsmentioning

confidence: 99%

“…The Enh ratio is inverse of the Si stress metric ( V amb : V max ) used recently for a subset of these DYEatom cruise data (Kranzler et al ); we choose the Enh ratio due to the larger dynamic range and because it can be reproduced easily by rearranging Eq. 1 to solve for K S (Eq.…”

Section: Methodsmentioning

confidence: 99%

“…Details of 18S and metatranscriptome assembly and analysis are published elsewhere (Kranzler et al ), but are briefly described here. One billion copies of each of two commercially available RNA standards (purified RNA transcripts) were added to each filter (#1, #8 ArrayControl™ Spots and Spikes, ThermoFisher Scientific, with polyA tails).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

The interaction of physical and biological factors drives phytoplankton spatial distribution in the northern California Current

Krause

Brzezinski

Largier

et al. 2020

Limnology & Oceanography

Self Cite

View full text Add to dashboard Cite

Transitions in phytoplankton community composition are typically attributed to ecological succession even in physically dynamic upwelling systems like the California Current Ecosystem (CCE). An expected succession from a high‐chlorophyll (~ 10 μg L−1) diatom‐dominated assemblage to a low‐chlorophyll (< 1.0 μg L−1) non‐diatom dominated assemblage was observed during a 2013 summer upwelling event in the CCE. Using an interdisciplinary field‐based space‐for‐time approach leveraging both biogeochemical rate measurements and metatranscriptomics, we suggest that this successional pattern was driven primarily by physical processes. An annually recurring mesoscale eddy‐like feature transported significant quantities of high‐phytoplankton‐biomass coastal water offshore. Chlorophyll was diluted during transport, but diatom contributions to phytoplankton biomass and activity (49–62% observed) did not decline to the extent predicted by dilution (18–24% predicted). Under the space‐for‐time assumption, these trends infer diatom biomass and activity and were stimulated during transport. This is hypothesized to result from decreased contact rates with mortality agents (e.g., viruses) and release from nutrient limitation (confirmed by rate data nearshore), as predicted by the Disturbance‐Recovery hypothesis of phytoplankton bloom formation. Thus, the end point taxonomic composition and activity of the phytoplankton assemblage being transported by the eddy‐like feature were driven by physical processes (mixing) affecting physiological (release from nutrient limitation, increased growth) and ecological (reduced mortality) factors that favored the persistence of the nearshore diatoms during transit. The observed connection between high‐diatom‐biomass coastal waters and non‐diatom‐dominated offshore waters supports the proposed mechanisms for this recurring eddy‐like feature moving seed populations of coastal phytoplankton offshore and thereby sustaining their activity.

show abstract

Thoughts on the evolution and ecological niche of diatoms

Behrenfeld

Halsey

Boss

et al. 2021

Ecological Monographs

View full text Add to dashboard Cite

Diatoms are the most recent major algal lineage added to the geological record, appearing more than 200 million years ago. They are stramenopile protists resulting from a secondary endosymbiotic event that yielded the only photosynthetic protistan lineage expressing external siliceous cell wall structures called frustules. Many diatoms also have large internal vacuoles and a common assumption in the literature is that success of the diatoms is largely attributable to these two morphological inventions: the frustule for defense and vacuole for luxury nutrient uptake. Here, we revisit the evolution of these inventions, propose sequential steps in frustule development, replace luxury nutrient uptake with predator defense and buoyancy control as the driver of vacuole expansion, and suggest that perhaps the greatest significance of the frustule for diatom evolution is the secondary consequence of enhancing sexual reproduction. In this synthesis, we emphasize a distinction between the 'general' success of diatoms and the success of 'bloom-forming' species, as the physiological and morphological drivers of these successes differ. Importantly, the bloom-forming species are responsible for the major role of diatoms in aquatic biogeochemical cycles. The bloom-forming habit we ascribe to specific physiological attributes that, at their core, revolve around influencing the balance between diatom growth and losses to predators. We propose that these physiological adaptations are linked to size-dependent maximum division rates in bloom-forming diatoms, due to size-scaling of predator-prey interactions. The existence of these bloom-forming species yields an apparent allometric relationship that has previously been interpreted in terms of nutrient acquisition.Our analysis yields insights into species successions during blooms, considers the fundamental benefit of blooming (and subsequent sinking) from a reproductive standpoint, and provides some reinterpretation of diatoms success over geologic time and in the modern ocean.

show abstract

Silicon limitation facilitates virus infection and mortality of marine diatoms

Cited by 70 publications

References 65 publications

The “Neglected Viruses” of Taihu: Abundant Transcripts for Viruses Infecting Eukaryotes and Their Potential Role in Phytoplankton Succession

The “Neglected Viruses” of Taihu: Abundant Transcripts for Viruses Infecting Eukaryotes and Their Potential Role in Phytoplankton Succession

The interaction of physical and biological factors drives phytoplankton spatial distribution in the northern California Current

Thoughts on the evolution and ecological niche of diatoms

Contact Info

Product

Resources

About