Skip to main content
ARS Home » Northeast Area » Frederick, Maryland » Foreign Disease-Weed Science Research » Research » Publications at this Location » Publication #393639
Research Project: Discovery and Development of Microbial-Based Biological Control Agents for Use Against Invasive Weeds in the United States

Location: Foreign Disease-Weed Science Research

Title: Impacts of crop management on nutrient use among soil Streptomyces

Author
item LANE, BRETT - University Of Minnesota
item GIESKE, MIRIAM - University Of Minnesota
item ANDERSON, HANNAH - University Of Wisconsin
item Fulcher, Michael
item KINKEL, LINDA - University Of Minnesota

Submitted to: Symposium Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 5/2/2022
Publication Date: 12/26/2022
Citation: Lane, B.R., Gieske, M.F., Anderson, H.M., Fulcher, M.R., Kinkel, L.L. 2022. Impacts of crop management on nutrient use among soil Streptomyces. Symposium Proceedings. 112:11S, S3.130. https://doi.org/10.1094/PHYTO-112-11-S3.1.
DOI: https://doi.org/10.1094/PHYTO-112-11-S3.1

Interpretive Summary:

Technical Abstract: Resource competition among Streptomyces is believed to play an important role in selection for antibiotic phenotypes that are important to suppression of plant pathogens in soil. However, we understand little of the factors that mediate nutrient use preferences and, consequently, resource competition among soil populations. Here we explore the impacts of crop management on nutrient use preferences and niche overlap among Streptomyces in agricultural settings. Specifically, we investigated the impacts of fertilization, residue management, and crop species in long-term (60+ year) crop monocultures on the nutrient use patterns among soil Streptomyces. Streptomyces isolates (n = 250) were obtained from soils cores taken from wheat, soy, and corn plots varying in nutrient (NPK) amendment (+/-) and residue incorporation (+/-). The nutrient use profile of each isolate was determined using Biolog SF-P2 plates. Nutrient use varied among Streptomyces isolated from soils cropped to different plant hosts, and with spatial location in the field. Specifically, average niche width and nutrient use efficiency both increased along one direction across the plots. In contrast, cultural management practices had surprisingly little impact on nutrient use phenotypes. Our results shed light on the potential for crop species and management to impact the functional capacities of soil microbial populations and the development of pathogen-suppressive soils.