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

Date

2000-08-01

Author

Wagner, F
Sahan, E
Falkner, G

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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

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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.