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Volume 26 - January 1994

Contents

Page 2 of 3

Research Article

  • The Effect of Agrochemicals on the Growth of Cladonia Furcata

  • I. Vagts, M. Kinder, J. Müller
  • Published online by Cambridge University Press:
    28 March 2007, pp. 73-82

  • Field experiments were conducted to test the effect of some agrochemicals on the growth of Cladonia furcata. Mineral fertilizer had no direct effect on lichen growth. In contrast, organic manure promoted the length of podetia. A lethal effect was recorded in the case of calcium cyanamide. In addition to direct effects of agrochemicals, indirect effects were also recorded.

Book Reviews

Obituary

  • Gunnar Degelius: 27 January 1903–22 July 1993

  • Lars Arvidsson
  • Published online by Cambridge University Press:
    28 March 2007, pp. 205-207
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Research Article

  • A Method for Studying the Cellular Location of Lead in Lichens

  • C. Branquinho, D. H. Brown
  • Published online by Cambridge University Press:
    28 March 2007, pp. 83-90

  • A number of possible displacing agents have been tested for their ability to release extracellular bound lead from Cladonia portentosa. Metal cations (Ni and Cu), thiol–rich reagents (glutathione, ammonium pyrrolidinedithiocarbamate) and some chelating agents (EGTA, EDTA at pH 9·5 or pH 2·7) were ineffective or caused membrane damage. Disodium EDTA at pH 4·5 was found to be an effective displacing agent, although the Na caused some release of intracellular K without membrane damage. This displacement procedure showed that no Pb suppliedin the laboratory entered the protoplast in 2 h. The effect of Ca, Cu, Pb, and Sr on membrane integrity was investigated.

Short Communications

Book Reviews

Short Communications

Book Reviews

Front matter

  • LIC volume 26 issue 4 Cover and Front matter

  • Published online by Cambridge University Press:
    28 March 2007, pp. f1-f2
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Short Communications

Back matter

  • LIC volume 26 issue 4 Cover and Back matter

  • Published online by Cambridge University Press:
    28 March 2007, pp. b1-b2
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Book Reviews

Page 2 of 3