ArticlePlanta2007
Chemotaxis to ammonium/methylammonium in Chlamydomonas reinhardtii: the role of transport systems for ammonium/methylammonium.
Article in Planta, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 19 citations in OpenAlex.
- COP5/HKR1 changes ciliary beat pattern and biases cell steering during chemotaxis in Chlamydomonas reinhardtii.Scientific reports · 2024Article
- Cells collectively migrate during ammonium chemotaxis in Chlamydomonas reinhardtii.Scientific reports · 2023Article
- Quorum Sensing Behavior in the Model Unicellular EukaryoteiScience · 2020Article
- Selective silicate-directed motility in diatoms.Nature communications · 2016Article
- Genetic and genomic approaches to identify genes involved in flagellar assembly in Chlamydomonas reinhardtii.Methods in cell biology · 2015Article
- Regulation by Light of Chemotaxis to Nitrite during the Sexual Life Cycle in Chlamydomonas reinhardtii.Plants (Basel, Switzerland) · 2014Article
- Ammonium triggers lateral root branching in Arabidopsis in an AMMONIUM TRANSPORTER1;3-dependent manner.The Plant cell · 2010Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ammonium is the preferred nitrogen source and chemoattractant for the unicellular green alga Chlamydomonas reinhardtii. Here we describe that chemotaxis to methylammonium, a non-metabolizable analogue to ammonium, that occurs only in vegetative cells and pregametes but not in gametes. A new methylammonium-resistant mutant, hat1 that was generated by insertional mutagenesis, has been isolated and found to be affected at multiple loci. At the physiological level, hat1 showed altered Km and Vmax for high-affinity ammonium and methylammonium transport. Transcript levels of the ammonium transporter genes CrAmt1.(1-8) were similar to the wild type except for a lower expression level of CrAmt1.5, 6 and 8. Treatment with the potassium-channel inhibitor tetraethylammonium (TEA) blocked chemotaxis to ammonium/methylammonium and [14C]-methylammonium uptake. Our results suggest that the hat1 mutant could be affected in genes encoding regulatory elements of AMT1 transporter activities and that chemotaxis to ammonium/methylammonium is mediated by ammonium transporters sensitive to the potassium-channel inhibitor TEA.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.