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Nemin: a morphogenic substance causing trap formation by predaceous fungi.
Science (New York, N.Y.)
|April 10, 1959
Summary
Nematode-conditioned broths induced trap formation in the fungus Arthrobotrys conoides. Researchers isolated an active compound, "nemin," from these broths, but its identity is currently unknown.
Area of Science:
- Mycology
- Nematology
- Biochemistry
Background:
- The fungus Arthrobotrys conoides is a known predaceous fungus that forms traps to capture nematodes.
- Axenic culture of nematodes allows for controlled study of their interactions with other organisms.
Purpose of the Study:
- To investigate the effect of nematode-conditioned media on the development of Arthrobotrys conoides.
- To identify the active principle responsible for inducing fungal differentiation.
Main Methods:
- Culturing the nematode Neoaplectana glaseri axenically.
- Exposing Arthrobotrys conoides mycelium to conditioned broths.
- Extracting and partially purifying the active compound from worm-free culture filtrates.
Main Results:
- Conditioned broths from Neoaplectana glaseri cultures stimulated mycelial differentiation in Arthrobotrys conoides, leading to trap formation.
- An active principle, termed "nemin," was successfully extracted from the culture filtrates.
Conclusions:
- A substance produced by Neoaplectana glaseri, named "nemin," induces the formation of traps in the predaceous fungus Arthrobotrys conoides.
- Further research is required to elucidate the chemical identity of nemin.
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