A5079457814- Bacteriophages and microbial interactions
- Microbial Community Ecology and Physiology
- Coral and Marine Ecosystems Studies
- Plant Virus Research Studies
- Evolution and Genetic Dynamics
- Aquaculture disease management and microbiota
- Respiratory viral infections research
- Marine and coastal ecosystems
- Marine Bivalve and Aquaculture Studies
- Genomics and Phylogenetic Studies
- Transgenic Plants and Applications
- Coastal wetland ecosystem dynamics
- Toxin Mechanisms and Immunotoxins
- Biochemical Analysis and Sensing Techniques
- Viral gastroenteritis research and epidemiology
- Protist diversity and phylogeny
- Ocean Acidification Effects and Responses
- Salmonella and Campylobacter epidemiology
- Environmental DNA in Biodiversity Studies
- Marine and coastal plant biology
- Wastewater Treatment and Nitrogen Removal
California NanoSystems Institute
2023-2025
University of California, Los Angeles
2023-2025
QB3
2023-2025
Rutgers, The State University of New Jersey
2018-2023
UtopiaCompression (United States)
2023
San Diego State University
2014-2020
The approximately 1011 viruses and microbial cells per gram of fecal matter (dry weight) in the large intestine are important to human health. responses three common gut bacteria species, one opportunistic pathogen, 117 commonly consumed foods, chemical additives, plant extracts were tested. Many compounds, including Stevia rebaudiana bee propolis extracts, exhibited species-specific growth inhibition by prophage induction. Overall, these results show that various foods may change abundances...
Abstract The blooming cosmopolitan coccolithophore Emiliania huxleyi and its viruses (EhVs) are a model for density-dependent virulent dynamics. EhVs commonly exhibit rapid viral reproduction drive host death in high-density laboratory cultures mesocosms that simulate blooms. Here we show this system exhibits physiology-dependent temperate dynamics at environmentally relevant E. densities rather than dynamics, with switching from long-term non-lethal phase healthy hosts to lethal lytic stage...
Abstract Seasonal shifts in phytoplankton accumulation and loss largely follow changes mixed layer depth, but the impact of depth on cell physiology remains unexplored. Here, we investigate physiological state populations associated with distinct bloom phases mixing regimes North Atlantic. Stratification deep alter community viral production, effectively shaping rates. Communities relatively deep, early-spring layers are characterized by low levels stress high rates, while those recently...
Viral infection and lysis drive bacterial diversity abundances, ultimately regulating global biogeochemical cycles. Infection can follow lytic or temperate routes, with dynamics suppressing population growth enhancing it. Given that over-proliferation is a pervasive threat to ecosystems, determining which dynamic dominates given ecosystem central question in viral ecology. However, the fields describe test rules of infection—theoretical ecology environmental microbiology, respectively—remain...
Human impacts are causing ecosystem phase shifts from coral- to algal-dominated reef systems on a global scale. As these ecosystems undergo transition, there is an increased incidence of coral-macroalgal interactions. Mounting evidence indicates that the outcome interaction events is, in part, governed by microbially mediated dynamics. The allocation available energy through different trophic levels, including microbial food web, determines interactions and ultimately shapes benthic...
Summary Viruses that infect photoautotrophs have a fundamental relationship with light, given the need for host resources. We investigated role of light on Coccolithovirus (EhV) infection globally distributed coccolithophore, Emiliania huxleyi . Light was required EhV adsorption, and viral production highest when cultures were maintained in continuous or at irradiance levels 150–300 μmol m −2 s −1 During early stages infection, photosynthetic electron transport remained high, while RuBisCO...
Abstract Background Predation pressure and herbivory exert cascading effects on coral reef health stability. However, the extent of these can vary considerably across space time. This variability is likely a result complex interactions between reefs’ biotic abiotic dimensions. A major biological component that has been poorly integrated into reefs' trophic studies microbial community, despite its role in death bleaching susceptibility. Viruses infect bacteria control densities may positively...
Here we introduce a series of thoroughly tested and well standardized research protocols adapted for use in remote marine environments. The sampling include the assessment resources available to microbial community (dissolved organic carbon, particulate matter, inorganic nutrients), comprehensive description viral bacterial communities (via direct counts, enumeration autofluorescent microbes, construction metagenomes). We combination methods, which represent dispersed field scientific...
Coccolithoviruses (EhVs) are large, double-stranded DNA-containing viruses that infect the single-celled, marine coccolithophore Emiliania huxleyi. Given cosmopolitan nature and global importance of E. huxleyi as a bloom-forming, calcifying, photoautotroph, huxleyi-EhV interactions play key role in oceanic carbon biogeochemistry. Virally-encoded glycosphingolipids (vGSLs) virulence factors produced by activity virus-encoded serine palmitoyltransferase (SPT). Here, we characterize dynamics,...
Here we introduce a series of thoroughly tested and well standardized research protocols adapted for use in remote marine environments. The sampling include the assessment resources available to microbial community (dissolved organic carbon, particulate matter, inorganic nutrients), comprehensive description viral bacterial communities (via direct counts, enumeration autofluorescent microbes, construction metagenomes). We combination methods, which represent dispersed field scientific...
Marine photosynthesis is largely driven by cyanobacteria, namely Synechococcus and Prochlorococcus. Genes encoding for photosystem (PS) I II reaction centre proteins are found in cyanophages believed to increase their fitness. Two viral PSI gene arrangements known, psaJF→C→A→B→K→E→D psaD→C→A→B. The shared genes between these cassettes encoded distinguished %G + C protein sequence respectively. data on the psaD→C→A→B organization were reported from only two partial coming Global Ocean...
Viral lysis of phytoplankton is one the most common forms death on Earth. Building an assay used extensively to assess rates loss predation by grazers, are increasingly quantified through dilution-based techniques. In this approach, dilution viruses and hosts expected reduce infection thus increase host net growth (i.e., accumulation rates). The difference between diluted undiluted interpreted as a measurable proxy for rate viral lytic death. These assays usually conducted in volumes ≥ 1 L....