Diel transcriptional response of a California Current plankton microbiome to light, low iron, and enduring viral infection
- University of California, San Diego, CA (United States). Scripps Institution of Oceanography; J. Craig Venter Institute, La Jolla, CA (United States). Microbial and Environmental Genomics Group; DOE/OSTI
- J. Craig Venter Institute, La Jolla, CA (United States). Microbial and Environmental Genomics Group
- University of California, San Diego, CA (United States). Scripps Institution of Oceanography; J. Craig Venter Institute, La Jolla, CA (United States). Microbial and Environmental Genomics Group
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Dept. of Biological Sciences
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Civil and Environmental Engineering
- American University in Cairo, New Cairo (Egypt). Dept. of Biology and Biotechnology Graduate Program
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Dept. of Biological Sciences; Monterey Bay Aquarium Research Institute, Moss Landing, CA (United States)
- Monterey Bay Aquarium Research Institute, Moss Landing, CA (United States)
- University of California, San Diego, CA (United States). Scripps Institution of Oceanography
- GEOMAR Helmholtz Centre for Ocean Research, Kiel (Germany). Ocean EcoSystems Biology Unit
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Civil and Environmental Engineering; University of Hawaii, Honolulu, HI (United States). Daniel K. Inouye Center for Microbial Oceanography: Research and Education (C-MORE)
Phytoplankton and associated microbial communities provide organic carbon to oceanic food webs and drive ecosystem dynamics. However, capturing those dynamics is challenging. Here, an in situ, semi-Lagrangian, robotic sampler profiled pelagic microbes at 4 h intervals over ~2.6 days in North Pacific high-nutrient, low-chlorophyll waters. We report on the community structure and transcriptional dynamics of microbes in an operationally large size class (>5 μm) predominantly populated by dinoflagellates, ciliates, haptophytes, pelagophytes, diatoms, cyanobacteria (chiefly Synechococcus), prasinophytes (chiefly Ostreococcus), fungi, archaea, and proteobacteria. Apart from fungi and archaea, all groups exhibited 24-h periodicity in some transcripts, but larger portions of the transcriptome oscillated in phototrophs. Periodic photosynthesis-related transcripts exhibited a temporal cascade across the morning hours, conserved across diverse phototrophic lineages. Pronounced silica:nitrate drawdown, a high flavodoxin to ferredoxin transcript ratio, and elevated expression of other Fe-stress markers indicated Fe-limitation. Fe-stress markers peaked during a photoperiodically adaptive time window that could modulate phytoplankton response to seasonal Fe-limitation. Remarkably, we observed viruses that infect the majority of abundant taxa, often with total transcriptional activity synchronized with putative hosts. Taken together, these data reveal a microbial plankton community that is shaped by recycled production and tightly controlled by Fe-limitation and viral activity
- Research Organization:
- J. Craig Venter Inst., Inc., Rockville, MD (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0008593; SC0018344
- OSTI ID:
- 1624026
- Journal Information:
- The ISME Journal, Journal Name: The ISME Journal Journal Issue: 11 Vol. 13; ISSN 1751-7362
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Metabolic and biogeochemical consequences of viral infection in aquatic ecosystems
|
journal | November 2019 |
Transcriptional patterns of Emiliania huxleyi in the North Pacific Subtropical Gyre reveal the daily rhythms of its metabolic potential
|
journal | November 2019 |
Resource conservation manifests in the genetic code
|
journal | November 2020 |
| Resource conservation manifests in the genetic code | text | January 2020 |
| Resource conservation manifests in the genetic code | text | January 2020 |
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