Abstract
Poplar is a short-rotation woody crop frequently studied for its significance as a sustainable bioenergy source. The successful establishment of a poplar plantation partially depends on its rhizosphere—a dynamic zone governed by complex interactions between plant roots and a plethora of commensal, mutualistic, symbiotic, or pathogenic microbes that shape plant fitness. In an exploratory endeavor, we investigated the effects of a consortium consisting of ectomycorrhizal fungi and a beneficial Pseudomonas sp. strain GM41 on plant growth (including height, stem girth, leaf, and root growth) and as well as growth rate over time, across four Populus trichocarpa genotypes. Additionally, we compared the level of total organic carbon and plant exometabolite profiles across different poplar genotypes in the presence of the microbial consortium. These data revealed no significant difference in plant growth parameters between the treatments and the control across four different poplar genotypes at 7 weeks post-inoculation. However, total organic carbon and exometabolite profiles were significantly different between the genotypes and the treatments. These findings suggest that this microbial consortium has the potential to trigger early signaling responses in poplar, influencing its metabolism in ways crucial for later developmental processes and stress tolerance.
| Original language | English |
|---|---|
| Article number | e544 |
| Journal | Plant Direct |
| Volume | 7 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2023 |
Funding
This research was also funded by the Genomic System Sciences Program, U.S. Department of Energy, Office of Science, Biological and Environmental Research, as part of the Center for Bioenergy Innovation at the Oak Ridge National Laboratory (https://cbi.ornl.gov/). Oak Ridge National Laboratory is managed by UT-Battelle, LLC., for the US DOE under contract No. DE-AC05-00OR22725. Notice: This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The U.S. Government retains, and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). Funding was provided by the Center for Bioenergy Innovation (CBI) led by Oak Ridge National Laboratory. CBI is funded as a U.S. Department of Energy Bioenergy Research Centers supported by the Office of Biological and Environmental Research in the DOE Office of Science under FWPERKP886. Oak Ridge National Laboratory is managed by UT‐Battelle, LLC for the U.S. Department of Energy under contract no. DE‐AC05‐00OR45678. Funding information This research was also funded by the Genomic System Sciences Program, U.S. Department of Energy, Office of Science, Biological and Environmental Research, as part of the Center for Bioenergy Innovation at the Oak Ridge National Laboratory ( https://cbi.ornl.gov/ ). Oak Ridge National Laboratory is managed by UT‐Battelle, LLC., for the US DOE under contract No. DE‐AC05‐00OR22725.
| Funders | Funder number |
|---|---|
| DOE Public Access Plan | |
| U.S. Government | |
| U.S. Department of Energy | DE‐AC05‐00OR22725 |
| Office of Science | DE‐AC05‐00OR45678, FWPERKP886 |
| Biological and Environmental Research | |
| Oak Ridge National Laboratory | |
| Center for Bioenergy Innovation | |
| UT-Battelle |
Keywords
- beneficial bacteria
- metabolomics
- mycorrhizal fungi
- poplar exometabolites
- total organic carbon
