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Physiology of some actinomycete genera
J C Ensign1, P Normand, J P Burden
1Department of Bacteriology, University of Wisconsin, Madison 53706.
Research in Microbiology
|October 1, 1993
Summary
This study explores environmental actinomycetes, focusing on motility, nitrogen fixation by Frankia, and the physiology of Micromonospora and Thermoactinomyces. It highlights mechanisms controlling their occurrence and behavior in diverse habitats.
Area of Science:
- Microbiology
- Environmental Science
- Molecular Biology
Background:
- Actinomycetes are ubiquitous environmental microorganisms, primarily organotrophic.
- Ecological studies have focused on detection and isolation, with less emphasis on behavioral control mechanisms.
- Diverse actinomycete genera exhibit unique ecological roles and physiological adaptations.
Purpose of the Study:
- To investigate control mechanisms governing the occurrence and behavior of environmental actinomycetes.
- To explore the ecological significance of motile spores, Frankia nitrogen fixation, and the physiology of specific genera.
- To present diverse approaches to understanding actinomycete ecology.
Main Methods:
- Analysis of flagella proteins and factors influencing spore motility and germination.
- Application of molecular techniques to elucidate Frankia endophyte-host relationships.
- Description of growth and physiology of Micromonospora and novel Thermoactinomyces isolates.
Main Results:
- Insights into the significance of flagella in actinomycete spore motility.
- Clarification of endophyte-host interactions in Frankia-plant symbiosis.
- Characterization of gentamicin-producing Micromonospora and thermophilic/acidophilic Thermoactinomyces.
Conclusions:
- Environmental actinomycetes display diverse adaptations and ecological roles.
- Understanding control mechanisms is crucial for their ecological study.
- Further research on motility, symbiosis, and extremophilic physiology is warranted.