Journal
PLANT AND SOIL
Volume 413, Issue 1-2, Pages 145-159Publisher
SPRINGER
DOI: 10.1007/s11104-016-3083-y
Keywords
Fertilization; Crop-rotation; Carbon source utilization patterns; Indicator species; Microbial community composition; 16S ribosomal-RNA gene sequencing
Categories
Funding
- Cooperative State Research, Education, and Extension Service, US Department of Agriculture [ILLU 875-374]
- National Science Foundation through the Science, Engineering, and Education for Sustainability Post-Doctoral Fellowship [1314064]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1314064] Funding Source: National Science Foundation
Ask authors/readers for more resources
Soil microbial communities influence nutrient cycling, chemistry and structure of soil, and plant productivity. In turn, agronomic practices such as fertilization and crop rotation alter soil physical and chemical properties and consequently soil microbiomes. Understanding the long-term effects of agronomic practices on soil microbiomes is essential for improving agronomic practices to optimize these microbial communities for agricultural sustainability. We examine the composition and substrate-utilization profiles of microbial communities at the Morrow Plots in Illinois. Microbial community composition is assessed with 16S rRNA gene sequencing and subsequent bioinformatic analyses. Community- level substrate utilization is characterized with the BIOLOG EcoPlate. Fertilizer and rotation treatments significantly affected microbial community structure, while substrate utilization was affected by fertilizer, but not crop-rotation treatments. Differences in relative abundance and occurrence of bacterial taxa found in fertilizer treatments can explain the observed differences in community level substrate utilization. Long-term fertilization and crop-rotation treatments affect soil microbial community composition and physiology, specifically through chronic nutrient limitation, long-term influx of microbes and organic matter via manure application, as well as through changes in soil chemistry. Relatively greater abundance of Koribacteraceae and Solibacterales taxa in soils might prove useful as indicators of soil degradation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available