ArticleApplied and environmental microbiology2003
Nitrate/nitrite assimilation system of the marine picoplanktonic cyanobacterium Synechococcus sp. strain WH 8103: effect of nitrogen source and availability on gene expression.
Article in Applied and environmental microbiology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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28 citing papers in PubMed, 63 citations in OpenAlex.
- A metagenomic snapshot of metabolic potentials in wintertime eutrophic sediments of Lake Taihu inferred from metagenome-assembled genomes.Frontiers in microbiology · 2026Article
- Simultaneous acclimation to nitrogen and iron scarcity in open ocean cyanobacteria revealed by sparse tensor decomposition of metatranscriptomes.Science advances · 2025Article
- A mechanistic study of the influence of nitrogen and energy availability on the NH4+ sensitivity of nitrogen assimilation in Synechococcus.Journal of experimental botany · 2022Article
- MarineMicrobiology spectrum · 2022Article
- The "Dark Side" of Picocyanobacteria: Life as We Do Not Know It (Yet).Microorganisms · 2022Review
- Complete genome sequence of Bacillus velezensis YYC, a bacterium isolated from the tomato rhizosphere.Archives of microbiology · 2021Article
- Glucosidase Inhibitors Screening in Microalgae and Cyanobacteria Isolated from the Amazon and Proteomic Analysis of Inhibitor ProducingMicroorganisms · 2021Article
- Effect of Time Interval on Arsenic Toxicity to Paddy Field Cyanobacteria as Evident by Nitrogen Metabolism, Biochemical Constituent, and Exopolysaccharide Content.Biological trace element research · 2021Article
- Potential virus-mediated nitrogen cycling in oxygen-depleted oceanic waters.The ISME journal · 2021Article
- Discovery of Euryhaline Phycoerythrobilin-ContainingmSystems · 2020Article
- Spatial Distribution Patterns of Bacterioplankton in the Oxygen Minimum Zone of the Tropical Mexican Pacific.Microbial ecology · 2020Article
- Phytoplankton transcriptomic and physiological responses to fixed nitrogen in the California current system.PloS one · 2020Article
- A comprehensive understanding of the biocontrol potential of Bacillus velezensis LM2303 against Fusarium head blight.PloS one · 2018Article
- Article
- Physiological Studies of Glutamine Synthetases I and III from Synechococcus sp. WH7803 Reveal Differential Regulation.Frontiers in microbiology · 2016Article
- Whole-genome sequencing of Bacillus subtilis XF-1 reveals mechanisms for biological control and multiple beneficial properties in plants.Journal of industrial microbiology & biotechnology · 2015Article
- Identification and characterization of the nitrate assimilation genes in the isolate of Streptomyces griseorubens JSD-1.Microbial cell factories · 2014Article
- Article
- Hfq is required for optimal nitrate assimilation in the Cyanobacterium Anabaena sp. strain PCC 7120.Journal of bacteriology · 2011Article
- Ecological genomics of marine picocyanobacteria.Microbiology and molecular biology reviews : MMBR · 2009Review
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Authors and funding
2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The genes encoding the structural components of the nitrate/nitrite assimilation system of the oceanic cyanobacterium Synechococcus sp. strain WH 8103 were cloned and characterized. The genes encoding nitrate reductase (narB) and nitrite reductase (nirA) are clustered on the chromosome but are organized in separate transcriptional units. Upstream of narB is a homologue of nrtP that encodes a nitrate/nitrite-bispecific permease rather than the components of an ABC-type nitrate transporter found in freshwater cyanobacteria. Unusually, neither nirA nor ntcA (encoding a positive transcription factor of genes subject to nitrogen control) were found to be tightly regulated by ammonium. Furthermore, transcription of glnA (encoding glutamine synthetase) is up-regulated in ammonium-grown cells, highlighting significant differences in nitrogen control in this cyanobacterium. Nitrogen depletion led to the transient up-regulation of ntcA, nirA, nrtP, narB, and glnA in what appears to be an NtcA-dependent manner. The NtcA-like promoters found upstream of nirA, nrtP, and narB all differ in sequence from the canonical NtcA promoter established for other cyanobacteria, and in the case of nirA, the NtcA-like promoter was functional only in cells deprived of combined nitrogen. The ecological implications of these findings are discussed in the context of the oligotrophic nature of oceanic surface waters in which Synechococcus spp. thrive.
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