Scientific article
Open access

Developmental Changes in the45Ca2+ Uptake by Trichoderma viride Mycelium

Published inFolia Microbiologica, vol. 42, no. 2, p. 125-129
Publication date1997

The rate of the ⁴⁵Ca²⁺ uptake by the submerged Trichoderma viride mycelium increased with the age of the culture from 6 h until a maximum which was reached at about 30 h, and then decreased until the uptake was virtually zero. The decrease in the rate of the ⁴⁵Ca²⁺ uptake was accompanied by an increase of mycelial mass. The uptake rate could not be reactivated upon substituting the medium for a fresh one, without or with dilution of the mycelium. The results suggest that the rate of ⁴⁵Ca²⁺ uptake reflects the biological age of the submerged culture. The surface-cultivated mycelium took up ⁴⁵Ca²⁺ proportionally with time. The autoradiography of colonies showed that ⁴⁵Ca²⁺ was distributed homogeneously throughout the mycelium during vegetative growth while conidiation was accompanied by a massive accumulation of ⁴⁵Ca²⁺ in conidia.

  • Graminearum
  • Submerged culture
  • Aerial mycelium
  • Filter paper disk
  • Mycelial mass
  • Swiss National Science Foundation - 75LPJ041485
  • Autre - Slovak Grant Agency (grant no. 1/1158/93)
Citation (ISO format)
ŠIMKOVIČ, M. et al. Developmental Changes in the<sup>45</sup>Ca<sup>2+</sup> Uptake by <i>Trichoderma viride</i> Mycelium. In: Folia Microbiologica, 1997, vol. 42, n° 2, p. 125–129. doi: 10.1007/BF02898720
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Article (Published version)
ISSN of the journal0015-5632

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