U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights


Sequencing Characterizes Bacterial Rhizosphere Communities of Biofuel Crops on Marginal Lands
Published: July 29, 2010
Posted: October 01, 2010

Using a new high-capacity sequencing technology, GLBRC researchers characterized the structure of bacterial communities living in the rhizosphere (microscopic zone surrounding roots) of corn, soybean, canola, sunflower, and switchgrass. Samples were taken from agricultural sites and adjacent native forest in four locations with different soil types in Michigan. Three of the locations were marginal lands unsuitable for conventional agriculture, and a fourth site served as an experimental control to evaluate crop yield and quality on nonmarginal land. Although bacterial communities from biofuel crops and forest were clearly differentiated, the communities grouped mainly by location rather than by crop species, and soil environment and land management were key factors influencing community structure. Although more limited in plant diversity, greater bacterial diversity was observed in the biofuel crop samples than in the forest samples. Species of Acidobacteria were the most abundant community members in the rhizospheres of all plants, yet no strains have been isolated for cultivation and characterization in the laboratory.

Reference: This research was reported in Jesus, E. C., et al. 2010. “Bacterial Communities in the Rhizosphere of Biofuel Crops Grown on Marginal Lands as Evaluated by 16S rRNA Gene Pyrosequences,” Bioenergy Research 3, 20–27.

Contact: John Houghton, SC-23.2, (301) 903-8288
Topic Areas:

  • Research Area: Genomic Analysis and Systems Biology
  • Research Area: Microbes and Communities
  • Research Area: Plant Systems and Feedstocks, Plant-Microbe Interactions
  • Research Area: Sustainable Biofuels and Bioproducts
  • Research Area: DOE Bioenergy Research Centers (BRC)

Division: SC-23.2 Biological Systems Science Division, BER

 

BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

Aug 24, 2019
New Approach for Studying How Microbes Influence Their Environment
A diverse group of scientists suggests a common framework and targeting of known microbial processes [more...]

Aug 08, 2019
Nutrient-Hungry Peatland Microbes Reduce Carbon Loss Under Warmer Conditions
Enzyme production in peatlands reduces carbon lost to respiration under future high temperatures. [more...]

Aug 05, 2019
Amazon Forest Response to CO2 Fertilization Dependent on Plant Phosphorus Acquisition
AmazonFACE Model Intercomparison. The Science Plant growth is dependent on the availabi [more...]

Jul 29, 2019
A Slippery Slope: Soil Carbon Destabilization
Carbon gain or loss depends on the balance between competing biological, chemical, and physical reac [more...]

Jul 15, 2019
Field Evaluation of Gas Analyzers for Measuring Ecosystem Fluxes
How gas analyzer type and correction method impact measured fluxes. The Science A side- [more...]

List all highlights (possible long download time)