Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum
The effect of temperature, pH, water potential and sources of nitrogen and carbon on the biocontrol agent Penicillium oxalicum were studied in vitro. The fungus is xerotolerant, mesophillic and has a wide pH tolerance. The parameters evaluated (germination, germ tube length, growth rate and sporulation) showed different sensitivities to the environmental factors. Peptone and free amino acids gave the highest growth rates and high levels of sporulation. Xylose, mannose and fructose gave the highest growth rates and mannose induced strong sporulation. The effect of nutrients (mannose + arginine) and water potential was also studied in vivo. The xerotolerant character of the fungus was confirmed. From this study we consider Penicillium oxalicum ecologically competent to perform effectively as a biocontrol agent in the soil environment.
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1997
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dig-inia-es-20.500.12792-33482020-12-15T09:54:23Z Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum Pascual, S. Rico, J. R. De Cal, A. Melgarejo, P. The effect of temperature, pH, water potential and sources of nitrogen and carbon on the biocontrol agent Penicillium oxalicum were studied in vitro. The fungus is xerotolerant, mesophillic and has a wide pH tolerance. The parameters evaluated (germination, germ tube length, growth rate and sporulation) showed different sensitivities to the environmental factors. Peptone and free amino acids gave the highest growth rates and high levels of sporulation. Xylose, mannose and fructose gave the highest growth rates and mannose induced strong sporulation. The effect of nutrients (mannose + arginine) and water potential was also studied in vivo. The xerotolerant character of the fungus was confirmed. From this study we consider Penicillium oxalicum ecologically competent to perform effectively as a biocontrol agent in the soil environment. 2020-10-22T14:30:09Z 2020-10-22T14:30:09Z 1997 journal article http://hdl.handle.net/20.500.12792/3348 10.1023/A1006898724724 eng Attribution-NonCommercial-ShareAlike 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ open access |
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Biblioteca del INIA España |
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| description |
The effect of temperature, pH, water potential and sources of nitrogen and carbon on the biocontrol agent Penicillium oxalicum were studied in vitro. The fungus is xerotolerant, mesophillic and has a wide pH tolerance. The parameters evaluated (germination, germ tube length, growth rate and sporulation) showed different sensitivities to the environmental factors. Peptone and free amino acids gave the highest growth rates and high levels of sporulation. Xylose, mannose and fructose gave the highest growth rates and mannose induced strong sporulation. The effect of nutrients (mannose + arginine) and water potential was also studied in vivo. The xerotolerant character of the fungus was confirmed. From this study we consider Penicillium oxalicum ecologically competent to perform effectively as a biocontrol agent in the soil environment. |
| format |
journal article |
| author |
Pascual, S. Rico, J. R. De Cal, A. Melgarejo, P. |
| spellingShingle |
Pascual, S. Rico, J. R. De Cal, A. Melgarejo, P. Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum |
| author_facet |
Pascual, S. Rico, J. R. De Cal, A. Melgarejo, P. |
| author_sort |
Pascual, S. |
| title |
Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum |
| title_short |
Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum |
| title_full |
Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum |
| title_fullStr |
Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum |
| title_full_unstemmed |
Ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent Penicillium oxalicum |
| title_sort |
ecophysiological factors affecting growth, sporulation and survival of the biocontrol agent penicillium oxalicum |
| publishDate |
1997 |
| url |
http://hdl.handle.net/20.500.12792/3348 |
| work_keys_str_mv |
AT pascuals ecophysiologicalfactorsaffectinggrowthsporulationandsurvivalofthebiocontrolagentpenicilliumoxalicum AT ricojr ecophysiologicalfactorsaffectinggrowthsporulationandsurvivalofthebiocontrolagentpenicilliumoxalicum AT decala ecophysiologicalfactorsaffectinggrowthsporulationandsurvivalofthebiocontrolagentpenicilliumoxalicum AT melgarejop ecophysiologicalfactorsaffectinggrowthsporulationandsurvivalofthebiocontrolagentpenicilliumoxalicum |
| _version_ |
1758005027180380160 |