ArticleThe ISME journal2022
Chemotaxis may assist marine heterotrophic bacterial diazotrophs to find microzones suitable for N
Article in The ISME journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed, 24 citations in OpenAlex.
- Composition of non-cyanobacterial diazotrophs in suspended and sinking particles is driven by productivity phase.Microbiology spectrum · 2026Article
- Nitrogen fixation rates increase with diazotroph richness in the global ocean.Scientific reports · 2026Article
- Particle-associated diazotrophs drive nitrogen fixation in Arctic subsurface waters of the Barents Sea.Nature communications · 2026Article
- Reactive oxygen species in the rhizosphere orchestrate the recruitment of beneficial bacteria.The EMBO journal · 2026Article
- Impact of diazotrophs on marine food webs and the biological carbon pump: progress and remaining challenges.The ISME journal · 2026Review
- Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to NCommunications biology · 2025Article
- Particle-associated NScience advances · 2025Article
- Dynamics of diazotroph particle colonization in the Arctic Ocean.The ISME journal · 2025Article
- Environmental gradients shape viral-host dynamics in the Pearl River estuary.ISME communications · 2025Article
- Nitrogen fixation under declining Arctic sea ice.Communications earth & environment · 2025Article
- Arsenic-induced enhancement of diazotrophic recruitment and nitrogen fixation in Pteris vittata rhizosphere.Nature communications · 2024Article
- Bacterial amino acid chemotaxis: a widespread strategy with multiple physiological and ecological roles.Journal of bacteriology · 2024Review
- Dynamic in situ detection in iRhizo-Chip reveals diurnal fluctuations ofProceedings of the National Academy of Sciences of the United States of America · 2024Article
- Marine particle microbiomes during a spring diatom bloom contain active sulfate-reducing bacteria.FEMS microbiology ecology · 2024Article
- Biofilm formation and cell plasticity drive diazotrophy in an anoxygenic phototrophic bacterium.Applied and environmental microbiology · 2023Article
- Non-cyanobacterial diazotrophs: global diversity, distribution, ecophysiology, and activity in marine waters.FEMS microbiology reviews · 2023Review
- Hydrodynamic regimes modulate nitrogen fixation and the mode of diazotrophy in Lake Tanganyika.Nature communications · 2023Article
- Partitioning of the denitrification pathway and other nitrite metabolisms within global oxygen deficient zones.ISME communications · 2023Article
- Formation and emergent dynamics of spatially organized microbial systems.Interface focus · 2023Review
- Cell-specific measurements show nitrogen fixation by particle-attached putative non-cyanobacterial diazotrophs in the North Pacific Subtropical Gyre.Nature communications · 2022Article
Corrections and comments
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Authors and funding
9 authors at 5 institutions in 3 countries.
Funding
Abstract
Heterotrophic bacterial diazotrophs (HBDs) are ubiquitous in the pelagic ocean, where they have been predicted to carry out the anaerobic process of nitrogen fixation within low-oxygen microenvironments associated with marine pelagic particles. However, the mechanisms enabling particle colonization by HBDs are unknown. We hypothesized that HBDs use chemotaxis to locate and colonize suitable microenvironments, and showed that a cultivated marine HBD is chemotactic toward amino acids and phytoplankton-derived DOM. Using an in situ chemotaxis assay, we also discovered that diverse HBDs at a coastal site are motile and chemotactic toward DOM from various phytoplankton taxa and, indeed, that the proportion of diazotrophs was up to seven times higher among the motile fraction of the bacterial community compared to the bulk seawater community. Finally, three of four HBD isolates and 16 of 17 HBD metagenome assembled genomes, recovered from major ocean basins and locations along the Australian coast, each encoded >85% of proteins affiliated with the bacterial chemotaxis pathway. These results document the widespread capacity for chemotaxis in diverse and globally relevant marine HBDs. We suggest that HBDs could use chemotaxis to seek out and colonize low-oxygen microenvironments suitable for nitrogen fixation, such as those formed on marine particles. Chemotaxis in HBDs could therefore affect marine nitrogen and carbon biogeochemistry by facilitating nitrogen fixation within otherwise oxic waters, while also altering particle degradation and the efficiency of the biological pump.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.