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Title: Mapping soil carbon from cradle to grave: drafting a molecular blueprint for C transformation from roots to stabilized soil organic C

Abstract

The soil surrounding plant roots, the rhizosphere, has long been recognized as a zone of great functional importance to plants and the terrestrial ecosystems they inhabit. The primary objective of this research project was to determine how organic carbon (C) decomposition and stabilization processes in soil are impacted by the interactions between plant roots and the soil microbial community. The project addressed three hypotheses: H1: The microbiomes of the rhizosphere and detritosphere undergo a functional succession driven by the molecular composition and quantity of root-derived C. H2: Elevated CO 2 impacts the function and succession of rhizosphere communities thus altering the fate of root-derived C. H3: Microbial metabolism of root derived C is a critical controller of the accumulation of organic C in the mineral-associated soil pool. Researchers combined stable isotope approaches with metagenomic analyses in order to map the flow of C from roots to specific organisms within the rhizosphere. These analyses allowed us to assess the metabolic capabilities and functional profiles of the organisms using root carbon.

Authors:
 [1]
  1. Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Univ. of California, Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1437612
Report Number(s):
DOE-UCB-0010570
DOE Contract Number:
SC0010570
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Firestone, Mary. Mapping soil carbon from cradle to grave: drafting a molecular blueprint for C transformation from roots to stabilized soil organic C. United States: N. p., 2018. Web. doi:10.2172/1437612.
Firestone, Mary. Mapping soil carbon from cradle to grave: drafting a molecular blueprint for C transformation from roots to stabilized soil organic C. United States. doi:10.2172/1437612.
Firestone, Mary. Thu . "Mapping soil carbon from cradle to grave: drafting a molecular blueprint for C transformation from roots to stabilized soil organic C". United States. doi:10.2172/1437612. https://www.osti.gov/servlets/purl/1437612.
@article{osti_1437612,
title = {Mapping soil carbon from cradle to grave: drafting a molecular blueprint for C transformation from roots to stabilized soil organic C},
author = {Firestone, Mary},
abstractNote = {The soil surrounding plant roots, the rhizosphere, has long been recognized as a zone of great functional importance to plants and the terrestrial ecosystems they inhabit. The primary objective of this research project was to determine how organic carbon (C) decomposition and stabilization processes in soil are impacted by the interactions between plant roots and the soil microbial community. The project addressed three hypotheses: H1: The microbiomes of the rhizosphere and detritosphere undergo a functional succession driven by the molecular composition and quantity of root-derived C. H2: Elevated CO 2 impacts the function and succession of rhizosphere communities thus altering the fate of root-derived C. H3: Microbial metabolism of root derived C is a critical controller of the accumulation of organic C in the mineral-associated soil pool. Researchers combined stable isotope approaches with metagenomic analyses in order to map the flow of C from roots to specific organisms within the rhizosphere. These analyses allowed us to assess the metabolic capabilities and functional profiles of the organisms using root carbon.},
doi = {10.2172/1437612},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2018},
month = {Thu Feb 01 00:00:00 EST 2018}
}

Technical Report:

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