High densities of antagonistic Streptomyces are associated with plant disease suppression in many soils. Here we review use of inoculation and organic matter amendments for enriching antagonistic Streptomyces populations to reduce plant disease and note that effective and consistent disease suppression in response to management has been elusive. We argue that shifting the focus of research from short-term disease suppression to the population ecology and evolutionary biology of antagonistic Streptomyces in soil will enhance prospects for effective management. A framework is presented for considering the impacts of short- and long-term management on competitive and coevolutionary dynamics among Streptomyces populations in relation to disease suppression.
Bibliographical noteFunding Information:
We are grateful for funding support from National Science Foundation Microbial Observatories 9977907 , United States Department of Agriculture Microbial Observatories 2006-35319-17445 , USDA-NIFA 2011 67019-30330 , and the University of Minnesota Agricultural Experiment Station MIN 22-018 . MGB is supported by USDA NIFA Postdoctoral Fellowship 2011-67012-30938. Lindsey Hanson, Nicole Perala Martin, Kelly McClintock, Bruce Paulsrud, Anita Davelos, and Miriam Newton contributed significant technical support to our collective research effort.
- Green manure
- Organic amendment