ArticleApplied and environmental microbiology2006
Phosphorus scavenging in the unicellular marine diazotroph Crocosphaera watsonii.
Article in Applied and environmental microbiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.
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48 citing papers in PubMed, 145 citations in OpenAlex.
- ModifiedMicroorganisms · 2026Article
- Dealing with phosphorus deficiency: contrasting strategies in marine phytoplankton and bacteria.ISME communications · 2026Article
- Significant contribution of the unicellular cyanobacterium UCYN-B to oceanic nitrogen fixation.National science review · 2025Article
- The chitin raft hypothesis for the colonization of the open ocean by cyanobacteria.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Review
- Unveiling Crocosphaera Responses to Phosphorus Depletion: Insights From Genome Analysis and Functional Characterization.Environmental microbiology · 2025Article
- Phosphorus limitation heightens vulnerability ofFrontiers in microbiology · 2025Article
- Adaptive Responses of Cyanobacteria to Phosphate Limitation: A Focus on Marine Diazotrophs.Environmental microbiology · 2024Review
- Integrating the impact of global change on the niche and physiology of marine nitrogen-fixing cyanobacteria.Global change biology · 2022Article
- Molecular mechanisms underlying iron and phosphorus co-limitation responses in the nitrogen-fixing cyanobacterium Crocosphaera.The ISME journal · 2022Article
- Schindler's legacy: from eutrophic lakes to the phosphorus utilization strategies of cyanobacteria.FEMS microbiology reviews · 2022Review
- Ambiguous controls on simulated diazotrophs in the world oceans.Scientific reports · 2022Article
- Article
- Cyanotoxin-encoding genes as powerful predictors of cyanotoxin production during harmful cyanobacterial blooms in an inland freshwater lake: Evaluating a novel early-warning system.The Science of the total environment · 2022Article
- Phosphorus Limitation Enhances Diazotroph Zinc Quotas.Frontiers in microbiology · 2022Article
- Organic Phosphorus Scavenging Supports Efficient Growth of Diazotrophic Cyanobacteria Under Phosphate Depletion.Frontiers in microbiology · 2022Article
- Untreated sewage outfalls do not promote Trichodesmium blooms in the coasts of the Canary Islands.Scientific reports · 2020Article
- Microbial community successions and their dynamic functions during harmful cyanobacterial blooms in a freshwater lake.Water research · 2020Article
- Accumulation of ambient phosphate into the periplasm of marine bacteria is proton motive force dependent.Nature communications · 2020Article
- Quantitative models of nitrogen-fixing organisms.Computational and structural biotechnology journal · 2020Review
- Differential Effects of Varying Concentrations of Phosphorus, Iron, and Nitrogen in NFrontiers in microbiology · 2020Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Through the fixation of atmospheric nitrogen and photosynthesis, marine diazotrophs play a critical role in the global cycling of nitrogen and carbon. Crocosphaera watsonii is a recently described unicellular diazotroph that may significantly contribute to marine nitrogen fixation in tropical environments. One of the many factors that can constrain the growth and nitrogen fixation rates of marine diazotrophs is phosphorus bioavailability. Using genomic and physiological approaches, we examined phosphorus scavenging mechanisms in strains of C. watsonii from both the Atlantic and the Pacific. Observations from the C. watsonii WH8501 genome suggest that this organism has the capacity for high-affinity phosphate transport (e.g., homologs of pstSCAB) in low-phosphate, oligotrophic systems. The pstS gene (high-affinity phosphate binding) is present in strains isolated from both the Atlantic and the Pacific, and its expression was regulated by the exogenous phosphate supply in strain WH8501. Genomic observation also indicated a broad capacity for phosphomonoester hydrolysis (e.g., a putative alkaline phosphatase). In contrast, no clear homologs of genes for phosphonate transport and hydrolysis could be identified. Consistent with these genomic observations, C. watsonii WH8501 is able to grow on phosphomonoesters as a sole source of added phosphorus but not on the phosphonates tested to date. Taken together these data suggest that C. watsonii has a robust capacity for scavenging phosphorus in oligotrophic systems, although this capacity differs from that of other marine cyanobacterial genera, such as Synechococcus, Prochlorococcus, and Trichodesmium.
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