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Rhizosphere bacterial carbon turnover is higher in nucleic acids than membrane lipids: implications for understanding soil C

Using a pulse chase 13CO2 plant labeling experiment we compared the flow of plant carbon into macromolecular fractions of rhizosphere soil microorganisms. Time dependent 13C dilution patterns in microbial cellular fractions were used to calculate their turnover time. The turnover times of microbial biomolecules were found to vary: microbial RNA (19 h) and DNA (30 h) turned over fastest followed by chloroform fumigation extraction-derived soluble cell lysis products (14 days), while phospholipid fatty acids (PLFAs) had the slowest turnover (42 days).

Bloom of resident antibiotic-resistant bacteria in soil following manure fertilization

Bloom of resident antibiotic-resistant bacteria in soil following manure fertilization
Nikolina Udikovic-Kolica,b,1, Fabienne Wichmanna,c,1, Nichole A. Brodericka, and Jo Handelsmana,2

http://www.yale.edu/handelsmanlab/publications/pdf/BloomofResidentAntibi...
PNAS

The increasing prevalence of antibiotic-resistant bacteria is a global
threat to public health. Agricultural use of antibiotics is believed to
contribute to the spread of antibiotic resistance, but the mechanisms
by which many agricultural practices influence resistance

Diffuse symbioses: Roles of plant-plant, plant-microbe, and microbe-microbe interactions in structuring the soil microbiome

Diffuse symbioses: Roles of plant-plant, plant-microbe, and microbe-microbe interactions in structuring the soil microbiome

Bakker et al. 2013 Molecular Ecology

http://onlinelibrary.wiley.com/doi/10.1111/mec.12571/abstract

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