کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6332293 1619795 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Single-walled carbon nanotubes alter soil microbial community composition
ترجمه فارسی عنوان
نانولوله های کربنی تک دیواره ترکیب ترکیبات میکروبی خاک را تغییر می دهند
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- The effects of SWCNTs on soil microbial community composition were investigated.
- SWCNTs significantly altered soil microbial community composition.
- Gram-positive and Gram-negative bacterial, and fungal biomass decreased with higher SWCNT concentrations.
- Soil microorganisms may be adversely affected when exposed to high concentrations of SWCNTs.

Recent developments in nanotechnology may lead to the release of nanomaterials into the natural environment, such as soils, with largely unknown consequences. We investigated the effects of single-walled carbon nanotubes (SWCNTs), one of the most widely used nanomaterials, on soil microbial communities by incubation of soils to which powder or suspended forms of SWCNTs were added (0.03 to 1 mg g− 1 soil). To determine changes in soil microbial community composition, phospholipid fatty acid (PLFA) profiles were analyzed at 25th day of the incubation experiment. The biomass of major microbial groups including Gram-positive and Gram-negative bacteria, and fungi showed a significant negative relationship with SWCNT concentration, while the relative abundance of bacteria showed a positive relationship with SWCNT concentration. Furthermore, soils under distinct concentrations of SWCNT treatments had PLFA profiles that were significantly different from one another. Our results indicate that the biomass of a broad range of soil microbial groups is negatively related with SWCNT concentration and upon entry into soils, SWCNTs may alter microbial community composition. Our results may serve as foundation for scientific guideline on regulating the discharge of nanomaterials such as SWCNTs to the soil ecosystem.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 466–467, 1 January 2014, Pages 533-538
نویسندگان
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