Short-term changes in total heavy metal concentration and bacterial community composition after replicated and heavy application of pig manure-based compost in an organic vegetable production system

2015 ◽  
Vol 51 (5) ◽  
pp. 593-603 ◽  
Author(s):  
Wei Tian ◽  
Zhenhua Zhang ◽  
Xiaofeng Hu ◽  
Ran Tian ◽  
Jibing Zhang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Bacterial Community ◽  
Production System ◽  
Bacterial Community Composition ◽  
Heavy Metal Concentration ◽  
Pig Manure ◽  
Vegetable Production ◽  
Short Term ◽  
Organic Vegetable Production ◽  
Heavy Application

scholarly journals Soil Bacterial Community Diversity and Composition as Affected by Tillage Intensity Treatments in Corn-Soybean Production Systems

2021 ◽  
Vol 12 (1) ◽  
pp. 157-172
Author(s):  
Shankar G. Shanmugam ◽  
Normie W. Buehring ◽  
Jon D. Prevost ◽  
William L. Kingery
Keyword(s):  
Microbial Community ◽  
Bacterial Community ◽  
Community Composition ◽  
Production System ◽  
Soil Microbial Community ◽  
Production Systems ◽  
Bacterial Community Composition ◽  
Soybean Production ◽  
Soil Microbial ◽  
Soil Bacterial

Our understanding on the effects of tillage intensity on the soil microbial community structure and composition in crop production systems are limited. This study evaluated the soil microbial community composition and diversity under different tillage management systems in an effort to identify management practices that effectively support sustainable agriculture. We report results from a three-year study to determine the effects on changes in soil microbial diversity and composition from four tillage intensity treatments and two residue management treatments in a corn-soybean production system using Illumina high-throughput sequencing of 16S rRNA genes. Soil samples were collected from tillage treatments at locations in the Southern Coastal Plain (Verona, Mississippi, USA) and Southern Mississippi River Alluvium (Stoneville, Mississippi, USA) for soil analysis and bacterial community characterization. Our results indicated that different tillage intensity treatments differentially changed the relative abundances of bacterial phyla. The Mantel test of correlations indicated that differences among bacterial community composition were significantly influenced by tillage regime (rM = 0.39, p ≤ 0.0001). Simpson’s reciprocal diversity index indicated greater bacterial diversity with reduction in tillage intensity for each year and study location. For both study sites, differences in tillage intensity had significant influence on the abundance of Proteobacteria. The shift in the soil bacterial community composition under different tillage systems was strongly correlated to changes in labile carbon pool in the system and how it affected the microbial metabolism. This study indicates that soil management through tillage intensity regime had a profound influence on diversity and composition of soil bacterial communities in a corn-soybean production system.

Cow responses and evolution of the rumen bacterial and methanogen community following a complete rumen content transfer

2018 ◽  
Vol 156 (8) ◽  
pp. 1047-1058
Author(s):  
T. De Mulder ◽  
L. Vandaele ◽  
N. Peiren ◽  
A. Haegeman ◽  
T. Ruttink ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Rumen Content ◽  
Short Term ◽  
Microbiome Composition ◽  
Nutritional Conditions ◽  
Microbiome Diversity ◽  
Methanogen Community ◽  
New Community

AbstractUnderstanding the rumen microbial ecosystem requires the identification of factors that influence the community structure, such as nutrition, physiological condition of the host and host–microbiome interactions. The objective of the current study was to describe the rumen microbial communities before, during and after a complete rumen content transfer. The rumen contents of one donor cow were removed completely and used as inoculum for the emptied rumen of the donor itself and three acceptor cows under identical physiological and nutritional conditions. Temporal changes in microbiome composition and rumen function were analysed for each of four cows over a period of 6 weeks. Shortly after transfer, the cows showed different responses to perturbation of their rumen content. Feed intake depression in the first 2 weeks after transfer resulted in short-term changes in milk production, methane emission, fatty acid composition and rumen bacterial community composition. These effects were more pronounced in two cows, whose microbiome composition showed reduced diversity. The fermentation metrics and microbiome diversity of the other two cows were not affected. Their rumen bacterial community initially resembled the composition of the donor but evolved to a new community profile that resembled neither the donor nor their original composition. Descriptive data presented in the current paper show that the rumen bacterial community composition can quickly recover from a reduction in microbiome diversity after a severe perturbation. In contrast to the bacteria, methanogenic communities were more stable over time and unaffected by stress or host effects.

Short-term structure and functional changes in bacterial community composition following amendment with biosolids compost

2011 ◽  
Vol 48 (2) ◽  
pp. 160-167 ◽  
Author(s):  
Eddie Cytryn ◽  
Larissa Kautsky ◽  
Maya Ofek ◽  
Raphi T. Mandelbaum ◽  
Dror Minz
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Term Structure ◽  
Bacterial Community Composition ◽  
Short Term ◽  
Functional Changes ◽  
Biosolids Compost

Assessment of Bacterial Community Composition of Anaerobic Granular Sludge in Response to Short-Term Uranium Exposure

2018 ◽  
Vol 76 (3) ◽  
pp. 648-659 ◽  
Author(s):  
Taotao Zeng ◽  
Shiqi Zhang ◽  
Xiang Gao ◽  
Guohua Wang ◽  
Piet N. L. Lens ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Granular Sludge ◽  
Anaerobic Granular Sludge ◽  
Short Term

scholarly journals Resilience of planktonic bacterial community structure in response to short-term weather deterioration during the growing season in an alpine lake

Hydrobiologia ◽  
2019 ◽  
Vol 847 (2) ◽  
pp. 535-548
Author(s):  
Tianli Ma ◽  
Yiming Jiang ◽  
Ali H. A. Elbehery ◽  
Stephan Blank ◽  
Rainer Kurmayer ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Relative Abundance ◽  
Bacterial Community Structure ◽  
Bacterial Community Composition ◽  
Growing Season ◽  
Alpine Lake ◽  
Scaling Analysis ◽  
Short Term ◽  
Cooling Period

AbstractThe disturbing effect of a short-term cooling period during summer on planktonic bacterial community structure of an alpine lake was investigated using 16S rDNA pyrosequencing. Proteobacteria, Actinobacteria, and Bacteroidetes constituted the most abundant phyla. During the sampling period (from July to August 2010), a sudden cooling period with high precipitation occurred, as indicated by a decrease in conductivity, calcium, and dissolved organic carbon concentration resulting from increased runoff. The relative abundance of Actinobacteria, Betaproteobacteria, and Cyanobacteria decreased during this short-term cooling period. Instead, a rapid shift from Betaproteobacteria to Gammaproteobacteria occurred, which was mainly caused by an increase of Acinetobacter rhizosphaerae. Soon after the short-term cooling period, warmer weather conditions got re-established and Betaproteobacteria recovered and became again dominant. Non-metric multi-dimensional scaling analysis and Venn diagrams revealed a planktonic bacterial community composition with high similarity at the beginning and the end of the growing season. Air temperature and precipitation were significantly correlated with the observed variation in operational taxonomic unit (OTU) relative abundance. It is concluded that, in response to the short-term cooling period, a distinct planktonic bacterial OTU community developed. It rapidly diminished, however, as summer conditions became re-established, implying the recovery of the original bacterial community structure.

Short-term bacterial community composition dynamics in response to accumulation and breakdown of Microcystis blooms

2011 ◽  
Vol 45 (4) ◽  
pp. 1702-1710 ◽  
Author(s):  
Huabing Li ◽  
Peng Xing ◽  
Meijun Chen ◽  
Yuanqi Bian ◽  
Qinglong L. Wu
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Short Term ◽  
Microcystis Blooms
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