ArticleEnvironmental science and pollution research international2021
Effects of elevated nitrogen on the growth and geosmin productivity of Dolichospermum smithii.
Article in Environmental science and pollution research international, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 17 citations in OpenAlex.
- Myxobacteria isolated from recirculating aquaculture systems (RAS): ecology and significance as off-flavor producers.Applied and environmental microbiology · 2025Article
- Effect of Culture Temperature on 2-Methylisoborneol Production and Gene Expression in Two Strains ofCells · 2024Article
- Co-Occurrence of Taste and Odor Compounds and Cyanotoxins in Cyanobacterial Blooms: Emerging Risks to Human Health?Microorganisms · 2023Review
- Construction and application of the genome-scale metabolic model ofFrontiers in bioengineering and biotechnology · 2023Article
- Temperature affects growth, geosmin/2-methylisoborneol production, and gene expression in two cyanobacterial species.Environmental science and pollution research international · 2022Article
- Contrasting patterns of 2-methylisoborneol (MIB) vs. geosmin across depth in a drinking water reservoir are mediated by cyanobacteria and actinobacteria.Environmental science and pollution research international · 2021Article
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Authors and funding
12 authors at 6 institutions in 1 country.
Funding
Abstract
Geosmin is one of the most common earthy-musty odor compounds, which is mainly produced by cyanobacteria in surface water. Nitrogen (N) is an important factor affecting the growth of cyanobacteria and its secondary metabolites production due to the eutrophication. In this study, we compared the effects of elevated N on the growth and geosmin productivity of Dolichospermum smithii NIES-824 (synonym Anabaena smithii NIES-824), aiming to better understand the mechanisms involved and give an important and fundamental knowledge to solve off-flavor problem. Results show that elevated N concentration promoted more chlorophyll a (Chl-a) production, whereas the geosmin synthesis decreased, revealing a possible competitive correlation between the Chl-a concentration and geosmin production of D. smithii NIES-824. The majority of geosmin (> 90%) was retained intracellularly during the 28 days of cultivation. The qRT-PCR analysis demonstrates that the expression level of the geosmin synthase gene (geoA) was constitutive and decreased at the higher N concentration during the exponential growth phase of cyanobacterial cells. Furthermore, the decrease of geoA expression during the decline phase suggested that geoA transcription was closely related to cell activity and isoprenoid productivity.
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Registered trials
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