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Title: Bioenergy cropping systems that incorporate native grasses stimulate growth of plant-associated soil microbes in the absence of nitrogen fertilization

Abstract

The choice of crops and their management can strongly influence soil microbial communities and their processes. Here, we used lipid biomarker profiling to characterize how soil microbial composition of five potential bioenergy cropping systems diverged from a common baseline five years after they were established. The cropping systems we studied included an annual system (continuous no-till corn) and four perennial crops (switchgrass, miscanthus, hybrid poplar, and restored prairie). Partial- and no-stover removal were compared for the corn system, while N-additions were compared to unfertilized plots for the perennial cropping systems. Arbuscular mycorrhizal fungi (AMF) and Gram-negative biomass was higher in unfertilized perennial grass systems, especially in switchgrass and prairie. Gram-positive bacterial biomass decreased in all systems relative to baseline values in surface soils (0–10 cm), but not subsurface soils (10–25 cm). Overall microbial composition was similar between the two soil depths. Our findings demonstrate the capacity of unfertilized perennial cropping systems to recreate microbial composition found in undisturbed soil environments and indicate how strongly agroecosystem management decisions such as N addition and plant community composition can influence soil microbial assemblages.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [2];  [1]
  1. Univ. of Wisconsin, Madison, WI (United States). Great Lakes Bioenergy Research Center (GLBRC) and Dept. of Agronomy
  2. Univ. of Wisconsin, Madison, WI (United States). Great Lakes Bioenergy Research Center (GLBRC); Chinese Academy of Sciences, Shenyang (China). Inst. of Applied Ecology
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1380036
Alternate Identifier(s):
OSTI ID: 1427719
Grant/Contract Number:  
FC02-07ER64494; AC05-76RL01830
Resource Type:
Journal Article: Published Article
Journal Name:
Agriculture, Ecosystems and Environment
Additional Journal Information:
Journal Name: Agriculture, Ecosystems and Environment Journal Volume: 233 Journal Issue: C; Journal ID: ISSN 0167-8809
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; 09 BIOMASS FUELS; AM fungi; Gram-negative bacteria; Cellulosic biomass; Phospholipid fatty acid; Perennial agroecosystems; Plant-microbe interactions

Citation Formats

Oates, Lawrence G., Duncan, David S., Sanford, Gregg R., Liang, Chao, and Jackson, Randall D. Bioenergy cropping systems that incorporate native grasses stimulate growth of plant-associated soil microbes in the absence of nitrogen fertilization. Netherlands: N. p., 2016. Web. doi:10.1016/j.agee.2016.09.008.
Oates, Lawrence G., Duncan, David S., Sanford, Gregg R., Liang, Chao, & Jackson, Randall D. Bioenergy cropping systems that incorporate native grasses stimulate growth of plant-associated soil microbes in the absence of nitrogen fertilization. Netherlands. https://doi.org/10.1016/j.agee.2016.09.008
Oates, Lawrence G., Duncan, David S., Sanford, Gregg R., Liang, Chao, and Jackson, Randall D. 2016. "Bioenergy cropping systems that incorporate native grasses stimulate growth of plant-associated soil microbes in the absence of nitrogen fertilization". Netherlands. https://doi.org/10.1016/j.agee.2016.09.008.
@article{osti_1380036,
title = {Bioenergy cropping systems that incorporate native grasses stimulate growth of plant-associated soil microbes in the absence of nitrogen fertilization},
author = {Oates, Lawrence G. and Duncan, David S. and Sanford, Gregg R. and Liang, Chao and Jackson, Randall D.},
abstractNote = {The choice of crops and their management can strongly influence soil microbial communities and their processes. Here, we used lipid biomarker profiling to characterize how soil microbial composition of five potential bioenergy cropping systems diverged from a common baseline five years after they were established. The cropping systems we studied included an annual system (continuous no-till corn) and four perennial crops (switchgrass, miscanthus, hybrid poplar, and restored prairie). Partial- and no-stover removal were compared for the corn system, while N-additions were compared to unfertilized plots for the perennial cropping systems. Arbuscular mycorrhizal fungi (AMF) and Gram-negative biomass was higher in unfertilized perennial grass systems, especially in switchgrass and prairie. Gram-positive bacterial biomass decreased in all systems relative to baseline values in surface soils (0–10 cm), but not subsurface soils (10–25 cm). Overall microbial composition was similar between the two soil depths. Our findings demonstrate the capacity of unfertilized perennial cropping systems to recreate microbial composition found in undisturbed soil environments and indicate how strongly agroecosystem management decisions such as N addition and plant community composition can influence soil microbial assemblages.},
doi = {10.1016/j.agee.2016.09.008},
url = {https://www.osti.gov/biblio/1380036}, journal = {Agriculture, Ecosystems and Environment},
issn = {0167-8809},
number = C,
volume = 233,
place = {Netherlands},
year = {2016},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1016/j.agee.2016.09.008

Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Works referenced in this record:

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Works referencing / citing this record:

Indications of shifting microbial communities associated with growing biomass crops on marginal lands in Southern Ontario
journal, October 2019


Nitrogen Demand Associated with Increased Biomass Yield of Switchgrass and Big Bluestem: Implications for Future Breeding Strategies
journal, December 2019


Synergies between mycorrhizal fungi and soil microbial communities increase plant nitrogen acquisition
journal, June 2019


Cover Crop Effects on Net Ecosystem Carbon Balance in Grain and Silage Maize
journal, January 2019