304 P. W. Flanagan and F. L. Bunnell 



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Temperature, °C 



FIGURE 9-5. Influence of temperature and substrates on fungal 

 respiration for Cylindrocarpon magnusianum (B8), Cladospori- 

 um cf cladosporoides (B216), Phialophora hoffmannii (B241) 

 and Chrysosporium pruinosum (FIO) in Gilson respirometers 

 growing on media with cellulose ( — ) and pectin ( — ) as the sole 

 sources of carbon. Substrate moisture content was 250% (dry 

 weight) in all cases. Flasks contained 0.1 g fungus (wet weight). 

 Measures began 48 hours after substrate inoculation. (After Flan- 

 agan and Scarborough 1974.) 



ined, e.g. Trichosporiella cerebriformis and several sterile forms like Bl, 

 CC17 and CSS4 (Figure 9-4). Fungi with responses to temperature like 

 that of T. cerebriformis are new to the literature in microbial ecology and 

 could be termed "psychrophilic thermotolerant." Roots of plants such 

 as Eriophorum angustifolium show a similar response to temperature for 

 uptake of phosphorus (Chapin 1974a). A third group of soil fungi dis- 

 plays psychrophilism, but demonstrates high exponential increases of 



