These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: 31P NMR study of polyphosphate levels during different growth phases of Phycomyces blakesleeanus.
    Author: Zivić M, Zakrzewska J, Zizić M, Bacić G.
    Journal: Antonie Van Leeuwenhoek; 2007 Feb; 91(2):169-77. PubMed ID: 17080291.
    Abstract:
    The changes in relative polyphosphate content, estimated as the intensity ratio of core polyphosphate signal and intracellular inorganic phosphate signal from 31P NMR spectra, during the growth of Phycomyces blakesleeanus are reported. The ratio increases from 16 h to 28 h of growth, the minimum occurs at 32 h, followed by sharp increase up to 36 h, and a steady decrease afterwards. The changes in the biomass during mycelium growth showed steady increases, with a stagnation period between 32 h and 36 h during which a pronounced increase in the intensity ratio of core polyphosphates to intracellular inorganic phosphate signal occurred. The reduction of growth temperature from 22 degrees C to 18 degrees C significantly decreased the rate and intensity of growth, but the pattern of polyphosphate changes remained unchanged. The changes of the intensity ratio of core polyphosphates to intracellular inorganic phosphate signal are linked to characteristic stages of sporangiophore development. Analysis of core polyphosphates, intracellular inorganic phosphate and beta-ATP signal intensities suggest the role of polyphosphates as an energy and/or a phosphate reserves during Phycomyces development.
    [Abstract] [Full Text] [Related] [New Search]