Agricultural soils are typically fumigated to provide effective control of nematodes, soilborne pathogens, and weeds in preparation for planting of high-value cash crops. The ability of soil microbial communities to recover after treatment with fumigants was examined using culture-dependent (Biolog) and culture-independent (phospholipid fatty acid [PLFA] analysis and denaturing gradient gel ele...

Animals live in close association with microorganisms, mostly prokaryotes, living in or on them as commensals, mutualists or parasites, and profoundly affecting host fitness. Most animal-microbe studies focus on microbial community structure; for this project, allometry (scaling of animal attributes with animal size) was applied to animal-microbe relationships across a range of species spanning...

While riparian forests have a demonstrated ability to remove nitrate (NO3-) moving from uplands before it enters streams, there is considerable uncertainty as to the mechanisms of NOr removal in these areas. We characterized spatial and temporal variation in denitrification enzyme activity (DEA), microbial biomass C and N content, soil respiration and potential net N mineralization and nitrific...

This study investigated the factors that determine the dynamics of bacterial communities in a complex system using multidisciplinary methods. Since natural and engineered microbial ecosystems are too complex to study, six types of synthetic microbial ecosystems (SMEs) were constructed under chemostat conditions with phenol as the sole carbon and energy source. Two to four phenol-degrading, phyl...

OBJECTIVE The effect of flavonoids from alfalfa on the microbial flora was determined using molecular techniques of 16S ribosome deoxyribonucleic acid (rDNA) analysis. METHODS Four primiparous Holstein heifers fitted with ruminal cannulas were used in a 4×4 Latin square design and fed a total mixed ration to which alfalfa flavonoids extract (AFE) was added at the rates of 0 (A, control), 20 (...

The capacity of groundwater ecosystem to recover from contamination by organic chemicals is a vital concern for environmental scientists. A pilot-scale aquifer system was used to investigate the long-term dynamics of contaminants, groundwater geochemistry, and microbial community structure (by 16S rRNA gene pyrosequencing and quantitative real-time PCR) throughout the 5-year life cycle of a sur...

Chronic intestinal inflammation is a poorly understood manifestation of Cystic Fibrosis (CF) disease. Fecal microbial dysbiosis has the potential inducing and been reported in people with CF as well mouse models. mice consuming an osmotic polyethylene glycol (PEG) laxative drinking water to prevent obstruction have low levels bacterial loads. In contrast, nutritionally complete liquid diet impa...

Microbes and seagrass establish symbiotic relationships constituting a functional unit called the holobiont that reacts as whole to environmental changes. Recent studies have shown microbial associated community varies according host species, conditions host’s health status, suggesting communities respond rapidly disturbances These changes, dynamics of which are still far from being clear, coul...

Soil microbial communities play a key role in the functioning of terrestrial ecosystems, particular through their interaction with above-ground plants and weathering rocks. In this study, chemical properties diversity soils covered by different organisms on Leshan Giant Buddha body were analyzed. The results showed that concentration soil total organic carbon (TOC), nitrogen (TN) phosphorus (TP...