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Effect of asphyxiation on wood decay fungi treated with argon and nitrogen gasTavzes, Črtomir ...The effects of low-oxygene conditions, achieved with either argon or nitrogen gas, on the viability of wood decay fungi Coniophora puteana, Antrodia vaillantii and Trametes versicolor, cultivated on ... PDA medium and infected wood samples, were examined. The fungal cultures were exposed to low oxygen concentration (below 10 ppm) for one to five weeks in hermeticaly sealed vessels. Anoxic treatment did not affect T. versicolor cultures in the time span of the experiment. Therefore treatment of only C. puteana and A. vaillantii mycelial cultures was extended to 10 and 16 weeks. After treatment, respiration and regeneration of mycelium were tested by measurments of CO2 production and resumed growth of hyphae onto fresh PDA growth medium. The effect of anoxic conditions on themycelia 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 or wooden blocks reintroduced on new nutrient medium. The cultures that were retarded by the low oxygen concentration consequently produced less CO2. For c. puteana cultures, the effects of anoxic treatment became evident in the second week of the treatment. The number of affected cultures rose steadily with the prolongation of anoxic treatment. By the sixteenth week of the anoxic treatment, 80% of the inocula of C. puteana did not regenerate. A. vaillantii inocula regeneration was not affected until after the fourth week of treatment, and similary for infected wood samples, after five weeks. The influence of anoxic treatment on the cultures of this species was more pronounced on the tenth and especially after the sixteenth week, when 67% of inocula did not regenerate. In general fungal species were differently sensitive to asphyxiation. T. versicolor cultures were not affected by anoxic conditions, caused by either argon or nitrogen gas, and A. vaillantii mycelial cultures proved to be less sensitive than those of C. puteana. In the test with infested wood blocks argon proved to be more effective, compared to nitrogen gas.Vir: IRG Documents 2002 [Elektronski vir] (IRG/WP 02-10452.pdf (13 str., 8 str. pril.))Vrsta gradiva - prispevek na konferenciLeto - 2002Jezik - angleškiCOBISS.SI-ID - 862857
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Tavzes, Črtomir | 19719 |
Pohleven, Franc | 05248 |
Vir: Osebne bibliografije
in: SICRIS
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