Q.116
Which one of the following is a Mycoparasite?
- Mycoparasitism by Laetisaria arvalis:
- Biology: Laetisaria arvalis is a non-pathogenic soil basidiomycete discovered as a potent mycoparasite and biological control agent against seedling pathogens.
- Mode of Action: It produces laetisaric acid (an allelopathic hydroxy-fatty acid) and cell-wall degrading enzymes that parasitize and rapidly lyse hyphae of Rhizoctonia solani and Pythium ultimum, suppressing damping-off in sugar beet and table beet.
- Other Fungi: Arthrobotrys oligospora is a nematode-trapping fungus; Rhizoctonia solani is a plant pathogen.
- Conclusion: Laetisaria arvalis is a mycoparasite (Option 1).
Correct option: (1) Laetisaria arvalis
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