Cited by 96Aquatic Ecosystems and Phytoplankton DynamicsMarine and coastal ecosystemsAlgal biology and biofuel production

Nitrate or ammonium: Influences of nitrogen source on the physiology of a green alga

Open access
Lachmann, Sabrina C., Mettler‐Altmann, Tabea, Wacker, Alexander, Spijkerman, Elly·2019·Ecology and Evolution

Abstract

In freshwaters, algal species are exposed to different inorganic nitrogen (N i ) sources whose incorporation varies in biochemical energy demand. We hypothesized that due to the lesser energy requirement of ammonium ( )‐use, in contrast to nitrate ( )‐use, more energy remains for other metabolic processes, especially under CO 2 ‐ and phosphorus (P i ) limiting conditions. Therefore, we tested differences in cell characteristics of the green alga Chlamydomonas acidophila grown on or under covariation of CO 2 and P i ‐supply in order to determine limitations, in a full‐factorial design. As expected, results revealed higher carbon fixation rates for ‐grown cells compared to growth with under low CO 2 conditions. ‐grown cells accumulated more of the nine analyzed amino acids, especially under P i ‐limited conditions, compared to cells provided with . This is probably due to a slower protein synthesis in cells provided with . In contrast to our expectations, compared to ‐grown cells ‐grown cells had higher photosynthetic efficiency under P i ‐limitation. In conclusion, growth on the N i ‐source did not result in a clearly enhanced C i ‐assimilation, as it was highly dependent on P i and CO 2 conditions (replete or limited). Results are potentially connected to the fact that C. acidophila is able to use only CO 2 as its inorganic carbon (C i ) source.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/ece3.4790

Cites

70 of 70 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lachmann, S. C., Mettler‐Altmann, T., Wacker, A., & Spijkerman, E.
Affiliations
  • University of Potsdam (DE)
  • Cluster of Excellence on Plant Sciences (DE)
Corresponding author
Lachmann, Sabrina C.
Venue
Ecology and Evolution
Publisher
Wiley
Published
2019-01-10
Volume
9
Issue
3
Pages
1070-1082
ISSN
2045-7758 (ISSN-L)
OpenAlex
W2909632209
Cited by
96
References
70
Citations by year
2026: 13 · 2025: 15 · 2024: 21 · 2023: 14 · 2022: 12 · 2021: 11 · 2020: 7 · 2019: 2
FWCI
3.48
Type
journal article
Language
en
Open access
Locations
  • Ecology and Evolution (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • publish.UP (University of Potsdam) (submittedVersion, cc-by)
Funders
Deutsche Forschungsgemeinschaft (SP695/5-1, WA2445/15‐1)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
Keywords
nitrogen source, nitrate, ammonium, Chlamydomonas acidophila, green algae, CO2 fixation, CO2 limitation, phosphorus limitation, amino acid accumulation, protein synthesis, photosynthetic efficiency, inorganic carbon assimilation, energy allocation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review