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Journal article
Soybean Plants Modify Metal Oxide Nanoparticle Effects on Soil Bacterial Communities
Environmental science & technology, v 48(22), pp 13489-13496
18 Nov 2014
PMID: 25354168
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Engineered nanoparticles (ENPs) are entering agricultural soils through land application of nanocontaining biosolids and agrochemicals. The potential adverse effects of ENPs have been studied on food crops and soil bacterial communities separately; however, how ENPs will affect the interacting plant soil system remains unknown. To address this, we assessed ENP effects on soil microbial communities in soybean-planted, versus unplanted, mesocosms exposed to different doses of nanoCeO(2) (0-1.0 g kg(-1)) or nano-ZnO (0-0.5 g kg(-1)) Nano-CeO2 did not affect soil bacterial communities in unplanted soils, but 0.1 g kg(-1) nano-CeO2 altered soil bacterial communities in planted soils, indicating that plants interactively promote nano-CeO2 effects in soil, possibly due to belowground C shifts since plant growth was impacted. Nano-ZnO at 0.5 g kg-1 significantly altered soil bacterial communities, increasing some (e g, Rhizobium and Sphingomonas) but decreasing other (e g, Ensifer, Rhodospirillaceae, Clostridium, and Azotobacter) operational taxonomic units (OTUs). Fewer OTUs decreased from nano-ZnO exposure in planted (41) versus unplanted (85) soils, suggesting that plants ameliorate nano-ZnO effects. Taken together, plants potentially through their effects on belowground biogeochemistry could either promote (i.e., for the 0.1 g kg(-1) nano-CeO2 treatment) or limit (i.e., for the 0.5 g kg(-1) nano-ZnO treatment) ENP effects on soil bacterial communities.
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Details
- Title
- Soybean Plants Modify Metal Oxide Nanoparticle Effects on Soil Bacterial Communities
- Creators
- Yuan Ge - Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USAJohn H. Priester - Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USALaurie C. Van de Werfhorst - Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USASharon L. Walker - University of California, RiversideRoger M. Nisbet - University of California, Santa BarbaraYoun-Joo An - Konkuk UniversityJoshua P. Schimel - University of California, Santa BarbaraJorge L. Gardea-Torresdey - Univ Calif Santa Barbara, UC CEIN, Santa Barbara, CA 93106 USAPatricia A. Holden - Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA
- Publication Details
- Environmental science & technology, v 48(22), pp 13489-13496
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Grant note
- DBI-0830117 / Environmental Protection Agency
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Engineering
- Web of Science ID
- WOS:000345262900056
- Scopus ID
- 2-s2.0-84924544145
- Other Identifier
- 991021230001504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Environmental
- Environmental Sciences