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Title: Rhizobacteria mediate the phytotoxicity of a range of biorefineryrelevant compounds

Journal Article · · Environmental Toxicology and Chemistry
DOI: https://doi.org/10.1002/etc.4501 · OSTI ID:1560185
 [1];  [1];  [2];  [3];  [3];  [3];  [1];  [3];  [4];  [3];  [3];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Joint BioEnergy Inst. (JBEI), Emeryville, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); San Francisco State Univ., CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. San Francisco State Univ., CA (United States)

Advances in engineering biology have expanded the list of renewable compounds that can be produced at scale via biological routes from plant biomass. In most cases, these chemical products have not been evaluated for effects on biological systems, defined here as bioactivity, that may be relevant to their manufacture. For sustainable chemical and fuel production, the industry needs to transition from fossil to renewable carbon sources, resulting in unprecedented expansion in the production and environmental distribution of chemicals used in biomanufacturing. Further, while some chemicals have been assessed for mammalian toxicity, environmental and agricultural hazards are largely unknown. We assessed six compounds that are representative of the emerging biofuel and bioproduct manufacturing process for their effect on model plants (Arabidopsis thaliana, Sorghum bicolor) and show that several alter plant seedling physiology at sub-millimolar concentrations. However, these responses change in the presence of individual bacterial species from the A. thaliana root microbiome. We identified two individual microbes that change the effect of chemical treatment on root architecture, and a pooled microbial community with different effects relative to its constituents individually. Our findings indicate that screening industrial chemicals for bioactivity on model organisms in the presence of their microbiomes is important for biologically and ecologically relevant risk analyses. This article is protected by copyright. All rights reserved.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1560185
Alternate ID(s):
OSTI ID: 1542408; OSTI ID: 1560190
Journal Information:
Environmental Toxicology and Chemistry, Vol. 38; ISSN 0730-7268
Publisher:
SETACCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

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Limonene hydroperoxide analogues differ in allergenic activity journal December 2008
Expression of a bacterial 3-dehydroshikimate dehydratase reduces lignin content and improves biomass saccharification efficiency journal January 2015
Trends in glyphosate herbicide use in the United States and globally journal February 2016
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Design of synthetic bacterial communities for predictable plant phenotypes journal February 2018
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