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Effect of anoxic conditions on wood-decay fungi treated with argon or nitrogenTavzes, Črtomir ; Pohleven, Franc ; Koestler, R.J.The effects of low-oxygen conditions, achieved with either argon or nitrogen gas, on the viability of wood-decay fungi Coniophora puteana and Antrodia vaillantii, grown on artificcial growth medium, ... were tested. Initial tests for viability were run afte 1, 2, 3 and 4 weeks of exposure to low oxygen conditions, at oxygen levels in the vessels maintained below 10 ppm. Treatment was later extended to 10 and 16 weeks. Test included measurments of CO2 production and determination of the ability of fungal tissue to regenerate. The effect of anoxic conditions on the mycelia of treated fungal species was expressed as an increased time needed for regeneration or as a complete absence of growth of inocula taken from the exposed cultures. The cultures that were retarded by the low-oxygen environment consequently produced less CO2 per hour. For C. puteana cultures, the effects of anoxic treatment became apparent in the second week of the treatment. The number of affected cultures rose steadily with the prolongation of anoxic treatment. By the 16th week of the experiment, 80% of the inocula of C. puteana did not regenerate. A. vaillantii inocula regeneration was not affected until after the fourth week of treatment. The influence of anoxic treatment on the cultures of this species was more pronounced in the test on the 10th and especially on the 16th week, when 67% of inocula did not regenerate. Argon or nitrogen gas caused the same degree of loss of viability in both the fungal species tested. In general, A. vailantii mycelial cultures proved to be less sensitive to anoxic conditions, caused by either argon and nitrogen gas.Source: International biodeterioration & biodegradation. - ISSN 0964-8305 (Vol. 47, No. 4, 2001, str. 225-231)Type of material - article, component partPublish date - 2001Language - englishCOBISS.SI-ID - 812169
Author
Tavzes, Črtomir |
Pohleven, Franc |
Koestler, R.J.
Topics
zaščita lesa |
lesne gobe |
anoxic conditions |
argon |
nitrogen gas |
wood-decay fungi |
Coniophora puteana |
Antrodia vaillantii |
survival |
respiration
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source: International biodeterioration & biodegradation. - ISSN 0964-8305 (Vol. 47, No. 4, 2001, str. 225-231)
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Tavzes, Črtomir | 19719 |
Pohleven, Franc | 05248 |
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