ArticleScientific reports2016
Nitrogen fixation in a non-heterocystous cyanobacterial mat from a mountain river.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 50 citations in OpenAlex.
- Exploring the phylogeny, molecular and genomic adaptations of thermophilic microalgae and cyanobacteria.Planta · 2026Review
- Secondary Metabolites Predict Diazotrophic Cyanobacteria: A Model-Based Cheminformatic Approach.Metabolites · 2025Article
- Nanoscale elemental and morphological imaging of nitrogen-fixing cyanobacteria.Metallomics : integrated biometal science · 2024Article
- Accelerated nitrogen cycling on Mediterranean seagrass leaves at volcanic COCommunications biology · 2024Article
- Article
- Bioactive Metabolites Produced by Cyanobacteria for Growth Adaptation and Their Pharmacological Properties.Biology · 2021Review
- Molecular Components of Nitrogen Fixation Gene Cluster and Associated Enzymatic Activities of Non-Heterocystous Thermophilic CyanobacteriumLife (Basel, Switzerland) · 2021Article
- Exploring the structural changes in nitrogen-fixing microorganisms of rhizosheath during the growth of Stipagrostis pennata in the desert.Bioscience reports · 2021Article
- Estimation of nitrogen and phosphorus concentrations from water quality surrogates using machine learning in the Tri An Reservoir, Vietnam.Environmental monitoring and assessment · 2020Article
- Analysis of molecular diversity within single cyanobacterial colonies from environmental samples.Scientific reports · 2020Article
- Oxidative Stress and Antioxidant Responses ofMicroorganisms · 2020Article
- Formation and Preservation of Microbial Palisade Fabric in Silica Deposits from El Tatio, Chile.Astrobiology · 2020Article
- Niche partitioning of microbial communities in riverine floodplains.Scientific reports · 2019Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In situ nitrogen fixation was investigated in a cyanobacterial mat growing on the bed of rocks of the Muga River, Spain. The filamentous non-heterocystous cyanobacterium Schizothrix dominated the mat, showing nitrogenase activity in the light at similar rates to those found in nearby heterocystous Rivularia colonies. N2 fixation in the light was significantly increased by an inhibitor of PSII and oxygen evolution, DCMU (3-[3,4-dichlorophenyl]-1,1-dimethylurea), and anaerobic conditions. However, no nitrogenase activity was found in the dark. Addition of fructose as a respiratory substrate induced nitrogenase activity in samples incubated under aerobic conditions in the dark but not in anaerobic conditions. Microelectrode oxygen profiles showed internal microaerobic microzones where nitrogen fixation might concentrate. Analyses of the 16S rRNA gene revealed only the presence of sequences belonging to filamentous non-heterocystous cyanobacteria. nifH gene diversity showed that the major phylotypes also belonged to this group. One of the three strains isolated from the Schizothrix mat was capable of fixing N2 and growing in the absence of combined N. This was consistent with the nifH gene analysis. These results suggest a relevant contribution of non-heterocystous cyanobacteria to nitrogen fixation in these mats.
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