Preliminary laboratory investigation of Lecanicillium muscarium affecting some phytopathogenic fungi

Document Type : Research Paper

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Abstract

In this research, antagonistic effects of Hyphomycete Lecanicillium muscarium (Zare and Gams) strain DAOM 198499 were investigated on some phytopathogenic fungi in laboratory conditions. The phytopathogens were Thielaviopsis basicola, Pythium ultimum, Rhizoctonia solani, Fusarium oxysporum, Verticillium albo- atrum and Penicillium digitatum. Experiment conducted by preparation of 5 cm discs collected from fresh cultures of each fungus. Discs were placed in Petri dishes contained Potato Dexterose Agar and placed 3 cm apart from each other. Controls were single cultures from each fungus. In the course of incubation period, growth radius were measured and compared for both control (r) and treatments (r1) in the zone of interaction. In most cases, the fungus L. muscarium (DAOM 198499) inhibited mycelial growth of phytopathogenic fungi in the zone of interacton. In such treatments, r1 (radius of phytopathogenic fungi in zone of interaction) was significantly less than r (radius in control). Inhibition of mycelial development by L. muscarium was more severe on P. digitatum than the other fungi. Also, examination showed that toxic metabolites produced by L. muscarium in the culture media, inhibited growth and development of P. digitatum. The results show antagonistic actions of this strain against some phytopathogenic fungi. However, complemantary research should be performed to furthere clear up exact mode of interaction.
 
 

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References

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Iranian Journal of Forest and Range Protection Research
Volume 5, Issue 2 - Serial Number 10
December 2008
Pages 151-159

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History

  • Receive Date: 27 June 2007
  • Revise Date: 06 June 2016
  • Accept Date: 25 December 2007

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