The establishment of coherent phosphate uptake behaviour by the cyanobacterium Anacystis nidulans

Date

2000-08-01

Author

Wagner, F
Sahan, E
Falkner, G

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

122
views

0
downloads

The physiological adaptation of the phosphate uptake behaviour of the cyanobacterium Anacystis nidulans (Synechococcus leopoliensis) has been studied under phosphate-deficient conditions. We show that, during additions of pulses of phosphate, the individual cells of a population potentially develop a coherent behaviour with respect to the kinetic and energetic properties of the high-affinity phosphate uptake system. These adaptive responses are independent of the amount of stored phosphate and the absolute external phosphate concentration, but depend on the exposure time to elevated phosphate concentrations. We demonstrate that the response to additions of pulses of phosphate triggers further metabolic alterations to CO2 fixation, and the flow of fixed carbon into the pool of low-molecular weight-compounds or glycogen. These alterations may also affect subsequent growth. The ecological relevance of the adaptive phosphate uptake behaviour is discussed with respect to the establishment and stability of natural communities.

Subject Keywords

Adaptation, Anacystis nidulans, Coherent behaviour, CO2 fixation, Growth behaviour, Phosphate uptake, Synechococcus leopoliensis, Threshold concentration

URI

https://hdl.handle.net/11511/66708

Journal

EUROPEAN JOURNAL OF PHYCOLOGY

DOI

https://doi.org/10.1017/s0967026200002833

Collections

Department of Biology, Article

Suggestions

OpenMETU
Core

The effect of arginine-428 mutation on modulation of activity of human liver flavin monooxygenase 3 (FMO3) by imipramine and chlorpromazine Adalı, Orhan; Philpot, RM (1999-07-01) This study was carried out to investigate the molecular basis for modulation of recombinant FMO3-catalyzed activity by the tricyclicantidepressants, imipramine and chlorpromazine. A mutant of human liver FMO3 (T428R) was formed by site-directed mutagenesis and characterized along with the native enzyme in order to elucidate a possible structure-function relationship. Functional properties of native and T428R human FMO3s were studied with methimazole as substrate. Both enzymes catalyzed the S-oxidation of me...
The facile synthesis of cyclopentanoid antibiotic kjellmanianone Demir, Ayhan Sıtkı; Tanyeli, Cihangir; Gulbeyaz, V; Akgul, H (1996-01-01) The synthesis of cyclopentanoid antibiotic Kjellmanianone is described in this study. The C-acylation of lithium enolates of 3-Methoxycyclopentenone by N-carbomethoxyimidazole or methylcyanoformate beta-ketoester, which when oxidized with Mn(III) acetate produces kjellmanianone in good yield.
The effect of different solvents on the performance of zeolite-filled composite pervaporation membranes Sener, Tansel; Okumus, Emin; Gurkan, Turker; Yılmaz, Levent (2010-10-15) The aim of this research is to study effect of different solvents on the membrane morphology and on the performance of zeolite-filled composite pervaporation membranes. PAN (polyacrylonitrile) was used as a base polymer and zeolite 13x (32 wt.%) was used as the filler. The solvents considered were DMF (dimethyl formamide), DMSO (dimethyl sulfoxide), DMAc (dimethyl acedamide) and THF (tetrahydrofuran). The cross-sectional morphology of manufactured membranes shows three layers: a zeolite-free polymer layer, ...
The effect of cysteine-43 mutation on thermostability and kinetic properties of citrate synthase from Thermoplasma acidophilum Kocabıyık, Semra; Russel, RJM; Danson, MJ; Hough, DW (Elsevier BV, 1996-07-05) In this study, we have substituted serine-43 by cysteine in the recombinant citrate synthase from a moderately thermophilic Archaeon Thermoplasma acidophilum, for site-specific attachment of labels and have investigated the effects of this mutation on the biochemical properties and thermal stability of the enzyme. Both wild-type and the mutant enzymes were purified to homogenity using affinity chromatography on Matrex Gel Red A. The mutant Thermoplasma citrate synthase is very similar to wild-type citrate s...
The Effect of oxygen transfer conditions on recombinant glucose isomerase production by Pichia pastoris under glyceraldehyde-3-phosphate dehydrogenase promoter Güneş, Hande; Çalık, Pınar; Özdamar, Tunçer H.; Department of Chemical Engineering (2015) The aim of this study is to investigate effects of oxygen transfer conditions on recombinant glucose isomerase (r-GI) production by Pichia pastoris under glyceraldehyde-3-phosphate dehydrogenase promoter (PGAP). Two different sets of operation strategies were investigated in terms of oxygen transfer conditions. In the first one, aeration rate was kept constant at QO/V = 3 vvm, 6 vvm, and 10 vvm while agitation rate was kept at N = 900 rpm; and in the second one, dissolved oxygen concentration was kept const...

Citation Formats

F. Wagner, E. Sahan, and G. Falkner, “The establishment of coherent phosphate uptake behaviour by the cyanobacterium Anacystis nidulans,” EUROPEAN JOURNAL OF PHYCOLOGY, pp. 243–253, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66708.