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Immunological separation of Entomophthorales genera
Abstract:
Exoantigens from Erynia neoaphidis, Conidiobolus major, C. thromboides, C. obscurus, Zoophthora radicans, and Basidiobolus ranarum were obtained from culture filtrates of fungal material grown in a yeast extract, peptone dialysate, dextrose medium and were tested against specific hyperimmune antisera prepared from E. neoaphidis, C. major, C. thromboides, and B. ranarum by the immunodiffusion technique. Specific precipitins were observed for E. neoaphidis and B. ranarum, while cross-reactions were detected among C. major, C. thromboides, and C. obscurus. The results suggest that genera of Entomophthorales can be easily separated by this simple immunological procedure.
Insights
Immunological analysis of fungal exoantigens from Entomophthorales species revealed distinct reactions. This simple immunodiffusion technique effectively differentiates genera within this fungal order.
Area of Science:
- Mycology
- Immunology
- Entomopathogenic Fungi
Background:
- The Entomophthorales order includes fungi that infect insects.
- Understanding the antigenic relationships between these fungi is crucial for classification.
- Exoantigens, released by fungi, can be used for serological identification.
Purpose of the Study:
- To investigate the antigenic relationships among several Entomophthorales species.
- To evaluate the utility of immunodiffusion for differentiating fungal genera.
Main Methods:
- Exoantigens were extracted from culture filtrates of six Entomophthorales species.
- These exoantigens were tested against specific hyperimmune antisera using the immunodiffusion technique.
Main Results:
- Specific precipitin reactions were observed for Erynia neoaphidis and Basidiobolus ranarum.
- Cross-reactions indicated antigenic similarities among Conidiobolus major, C. thromboides, and C. obscurus.
Conclusions:
- Immunodiffusion is a straightforward method for distinguishing between Entomophthorales genera.
- Antigenic analysis supports the separation of genera within the Entomophthorales.