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Questions and Answers
Which secondary metabolite is known for inducing tetanic paralysis in insects?
Which secondary metabolite is known for inducing tetanic paralysis in insects?
Which Entomopathogenic fungus attacks scale insects, white flies, thrips, aphids, and grasshoppers?
Which Entomopathogenic fungus attacks scale insects, white flies, thrips, aphids, and grasshoppers?
Which Cordycepia toxin acts as an inhibitor of mitochondrial and prokaryotic ATPases?
Which Cordycepia toxin acts as an inhibitor of mitochondrial and prokaryotic ATPases?
Which Deuteromycota fungus is known to produce hirsutellin in vitro?
Which Deuteromycota fungus is known to produce hirsutellin in vitro?
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Which fungus is the anamorph of Cordyceps?
Which fungus is the anamorph of Cordyceps?
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Which pathogenic fungus is registered in the US and inhibits insect cell growth in culture?
Which pathogenic fungus is registered in the US and inhibits insect cell growth in culture?
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What is the name of the red pigment produced by Beauveria bassiana that exhibits microbial toxicity along with beauvericin and bassianolide?
What is the name of the red pigment produced by Beauveria bassiana that exhibits microbial toxicity along with beauvericin and bassianolide?
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Which of the following factors does NOT affect the successful invasion of an insect host by Beauveria bassiana?
Which of the following factors does NOT affect the successful invasion of an insect host by Beauveria bassiana?
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What is the primary mechanism by which Beauveria bassiana causes death in an infected insect host?
What is the primary mechanism by which Beauveria bassiana causes death in an infected insect host?
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Which of the following compounds produced by Beauveria bassiana is an immunosuppressant?
Which of the following compounds produced by Beauveria bassiana is an immunosuppressant?
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Which of the following is NOT a component involved in the penetration of the insect cuticle by Beauveria bassiana?
Which of the following is NOT a component involved in the penetration of the insect cuticle by Beauveria bassiana?
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What is the common name for the fungus Metarhizium anisopliae?
What is the common name for the fungus Metarhizium anisopliae?
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What is the primary means of reproduction for fungi in the Phylum Deuteromycota?
What is the primary means of reproduction for fungi in the Phylum Deuteromycota?
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Which of the following fungi is a pathogen of the eriophyid rust mite?
Which of the following fungi is a pathogen of the eriophyid rust mite?
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What is a characteristic of fungi in the Deuteromycota phylum that infect insects?
What is a characteristic of fungi in the Deuteromycota phylum that infect insects?
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Which of the following is a characteristic of the fungus Beauveria bassiana?
Which of the following is a characteristic of the fungus Beauveria bassiana?
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What is the function of the resting or overwintering structure in fungi from the Deuteromycota phylum?
What is the function of the resting or overwintering structure in fungi from the Deuteromycota phylum?
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Which of the following is a characteristic of fungi in the Loculoascomycetes class?
Which of the following is a characteristic of fungi in the Loculoascomycetes class?
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Study Notes
Secondary Metabolites and Their Effects
- Common secondary metabolite causing tetanic paralysis in insects: Meliacine.
Entomopathogenic Fungi
- Beauveria bassiana is the entomopathogenic fungus that effectively targets scale insects, whiteflies, thrips, aphids, and grasshoppers.
Toxins and Inhibitors
- The Cordycepin toxin acts as an inhibitor of mitochondrial and prokaryotic ATPases.
Deuteromycota Fungi
- A notable Deuteromycota fungus that produces hirsutellin in vitro is Hirsutella.
Cordyceps Anamorph
- The anamorph of Cordyceps is known as Anamorph Cordyceps.
Pathogenic Fungi
- A registered pathogenic fungus in the US is Beauveria bassiana, known for inhibiting insect cell growth in culture.
Pigments and Compounds
- Beauveria bassiana produces a red pigment characterized as violacein, which exhibits microbial toxicity alongside beauvericin and bassianolide.
Invasion Factors
- Factors that do NOT affect the successful invasion of an insect host by Beauveria bassiana include host color.
Mechanism of Action
- Beauveria bassiana primarily causes death in infected insect hosts through hyphal penetration and toxin production.
Immunosuppressants
- An immunosuppressant compound produced by Beauveria bassiana is bassianolide.
Cuticle Penetration
- Components NOT involved in penetration of the insect cuticle by Beauveria bassiana: arbuscular mycorrhizal fungi.
Common Names and Reproduction
- Common name for the fungus Metarhizium anisopliae: Green Muscardine Fungus.
- Primary means of reproduction for fungi in the Phylum Deuteromycota: asexual reproduction via conidia.
Pathogens of Mites
- A pathogenic fungus targeting the eriophyid rust mite is Hirsutella burkei.
Characteristics of Deuteromycota
- A characteristic of fungi in Phylum Deuteromycota that infect insects: production of asexual spores.
Characteristics of Beauveria bassiana
- Key characteristic of Beauveria bassiana: entomopathogenic lifestyle, enabling it to decimate insect populations.
Resting Structures
- The function of resting or overwintering structures in fungi from the Deuteromycota phylum is survival during adverse conditions.
Loculoascomycetes Class
- A defining characteristic of fungi in the Loculoascomycetes class: presence of locules (small cavities) that contain ascospores.
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Description
Test your knowledge on toxic metabolites produced by Beauveria bassiana, including beauvericin, bassianolide, and oosporein. Learn about their toxic effects on brine shrimp, mosquito larvae, and Lepidoptera larvae, as well as their presence in other fungi like Paecilomyces and Fusarium.
