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Carbon Sequestration Beneath the Active Zone of the Rhizosphere: Insights from Extremophile Ecosystems


EMSL Project ID
49675

Abstract

To better understand the ultimate fate of carbon sequestered in the subsurface, we are studying carbon sequestration mechanisms in mineralizing extremophile environments. Such ecosystems provide an analog for studying the types of processes that occur in subsurface regimes beneath the active rhizosphere. We seek to elucidate how organic remains (aka necromass) are sequestered in association with secondary precipitates that form in soils. EMSL scientists are leading efforts to elucidate carbon cycling from the rhizosphere to the atmosphere through plant-microbial-fungal interactions. This project will explore the processes that lead to carbon sequestration in precipitates that form beneath the rhizosphere. A combination of chemical imaging techniques that are available at EMSL will be essential for the success of this project.

Project Details

Start Date
2016-11-23
End Date
2019-09-30
Status
Closed

Team

Principal Investigator

Sherry Cady
Institution
Environmental Molecular Sciences Laboratory

Team Members

Malak Tfaily
Institution
University of Arizona

Kirsten Hofmockel
Institution
Pacific Northwest National Laboratory

Christopher Anderton
Institution
Environmental Molecular Sciences Laboratory

Shana Kendall
Institution
Environmental Molecular Sciences Laboratory

Libor Kovarik
Institution
Pacific Northwest National Laboratory

Nancy Washton
Institution
Pacific Northwest National Laboratory

Lizabeth Alexander
Institution
Environmental Molecular Sciences Laboratory

Zihua Zhu
Institution
Environmental Molecular Sciences Laboratory

Ljiljana Pasa-Tolic
Institution
Environmental Molecular Sciences Laboratory

John Cliff
Institution
Environmental Molecular Sciences Laboratory

Alice Dohnalkova
Institution
Environmental Molecular Sciences Laboratory

Bruce Arey
Institution
Pacific Northwest National Laboratory

Related Publications

Sanchez-Garcia L., M.A. Fernandez-Martinez, M. García-Villadangos, Y. Blanco, S.L. Cady, N.W. Hinman, and M.E. Bowden, et al. 2019. "Microbial biomarker transition in High-Altitude Sinter Mounds from El Tatio (Chile) through different stages of hydrothermal activity." Frontiers in Microbiology 9. PNNL-SA-138900. doi:10.3389/fmicb.2018.03350
Siljestrom S ,Parenteau M N,Jahnke L L,Cady S L 2017. "A comparative ToF-SIMS and GC–MS analysis of phototrophic communities collected from an alkaline silica-depositing hot spring" Organic Geochemistry 109():14-30. 10.1016/j.orggeochem.2017.03.009