1. Effect of calcium on growth of submerged Terfezia boudieri mycelium.
- Author
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N. Roth-Bejerano, S. Mendlinger, and V. Kagan-Zur
- Subjects
- *
CALCIUM , *MYCORRHIZAL fungi , *MYCORRHIZAL plants , *SHRUBS , *SOILS - Abstract
The effect of Ca 2+ on mycelial growth in Terfezia boudieri was studied. Terfezia boudieri Chatin (Ascomycotinae) occurs in mycorrhizal association with Helianthemum shrubs in deserts with calcareous soils. External Ca 2+ stimulated mycelial growth in both liquid media and solidified substrates. The response to Ca 2+ was very faint in well-aerated culture but pronounced in mycelia immersed in the medium, indicating dependence on mycelial aeration. 2,4-Dinitrophenol (DNP), an inhibitor of oxidative phosphorylation, and succinate, a potential cytoplasm acidifier, inhibited mycelial growth but enhanced the stimulatory effect of Ca 2+. This effect was reduced by the Ca 2+ channel blocker verapamil. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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