Rhizosphere processes at molecular to core scale
EMSL Project ID
49216
Abstract
The amount of C in soil far exceeds the C content of atmosphere as well as the amount C stored above ground as plant biomass. The C fluxes between atmosphere and biomass are huge, many orders of magnitude larger than anthropogenically driven C release. Under present climate conditions only a tiny fraction of these C fluxes are stored in soil long-term, yet there is only limited understanding of the processes that cause C to remain in soil. Less understood is how those processes will behave under stress such as climate change. Such understanding is important not just for increasing the robustness of climate change predictions but is also necessary for developing sustainable approaches for bioenergy crops and food security.The proposed campaign is composed of three research thrusts conducted at the molecular, pore and core scale. The research campaign will capitalize on the achievements of EMSL’s soil organic matter acceleration projects, Pore scale and Rhizosphere research campaigns, utilize the microfluidic platforms developed under the PNNL’s Bio-Imaging research program, and leverage on-going EMSL intramural projects in rhizosphere imaging. The three thrusts include:
• Molecular-scale soil chemistry and processes
• Pore-scale rhizosphere interactions
• Core-scale plant-soil interactions
Project Details
Start Date
2016-02-25
End Date
2016-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Co-Investigator(s)
Team Members
Related Publications
Staley C, AP Ferrieri, MM Tfaily, Y Cui, P Wang, RK Chu, JB Shaw, CK Ansong, HM Brewer, AD Norbeck, LM Markillie, FP do Amaral, T Tuleski, T Pellizzaro, BJ Agtuca, RA Ferrieri, S Tringe, L Pasa Tolic, G Stacey, and M Sadowsky. 2017. "Diurnal Cycling of Rhizosphere Bacterial Communities is Associated with Shifts in Carbon Metabolism." Microbiome 5(1):65. doi:10.1186/s40168-017-0287-1
Tfaily M.M., N.J. Hess, A. Koyama, and R.D. Evans. 2018. "Elevated [CO2] changes soil organic matter composition and substrate diversity in an arid ecosystem." Geoderma 330. PNNL-SA-129666. doi:10.1016/j.geoderma.2018.05.025
Tfaily MM, RK Chu, JG Toyoda, N Tolic, EW Robinson, L Pasa Tolic, and NJ Hess. 2017. "Sequential extraction protocol for organic matter from soils and sediments using high resolution mass spectrometry." Analytica Chimica Acta 972:54-61. doi:10.1016/j.aca.2017.03.031