In Vitro Thermal Requirements of Some Beauveria sp. Isolates Under Constant Conditions

Authors

  • Ana Cristina Fătu Research-Development Institute for Plant Protection Bucharest (Romania)
  • Cristina Maria Lumînare Faculty of Agriculture (University of Agronomic Sciences and Veterinary Medicine of Bucharest, Romania)
  • Daniel Nicolae Cojanu Faculty of Biotechnologies (University of Agronomic Sciences and Veterinary Medicine of Bucharest, Romania)
  • Mihaela Monica Dinu Faculty of Biotechnologies (University of Agronomic Sciences and Veterinary Medicine of Bucharest, Romania)
  • Ana Maria Andrei Research-Development Institute for Plant Protection Bucharest (Romania)

DOI:

https://doi.org/10.24297/jaa.v12i.9130

Keywords:

Beauveria, entomopathogenic fungi, thermal tolerance

Abstract

The thermal tolerance of four isolates of Beauveria bassiana and one isolate of Beauveria pseudobassiana was evaluated in vitro, by measuring the colonial diameters, on PDA medium, at temperatures between 5 and 35 ° C, during 14 days. The data obtained were used to calculate the growth rate of fungal colonies (mm / day), using linear regression. The representation of the values corresponding to the minimum, optimal and maximum temperature for vegetative growth was a curve described by a modified beta (ß) mathematical function. The minimum growth temperature of these isolates varied between 3.4 and 4.5 °C, the optimum temperature varied between 21.8 and 22.9 °C, except for one isolate of which optimal temperature was       26.8 °C, while the maximum temperature was varied for all isolates between 35.0 and 35.7 °C.

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Published

2021-10-27

How to Cite

Cristina Fătu, A., Maria Lumînare, C., Nicolae Cojanu, D., Monica Dinu, M. ., & Maria Andrei, A. (2021). In Vitro Thermal Requirements of Some Beauveria sp. Isolates Under Constant Conditions. JOURNAL OF ADVANCES IN AGRICULTURE, 12, 70–76. https://doi.org/10.24297/jaa.v12i.9130

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