File:Modeling relic DNA dynamics.jpg
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Summary[edit]
DescriptionModeling relic DNA dynamics.jpg |
English: Modeling relic DNA dynamics (a) The amount of relic DNA in a microbial environment is determined by inputs associated with the mortality of viable individuals with intact DNA and by losses associated with the degradation of relic DNA. If the diversity of sequences contained in the relic DNA pool is sufficiently different from that in the intact DNA pool, then relic DNA may bias estimates of microbial biodiversity (as indicated by different colored boxes) when sampling from the total (intact + relic) DNA pool. To explore how degradation alters the SAD of the relic community, we explored three scenarios. First, we simulated a neutral scenario where relic DNA sequences produced by different species degrade at the same rate. Second, we simulated conditions under which physical, chemical, or biological processes reduce the degradation rate of relic DNA belonging to some species via protection. Third, we simulated “hot spots” where more abundant relic DNA sequences experience higher rates of relic DNA degradation, a condition that may arise in structured habitats where there are patchy distributions of individuals and their metabolic products (i.e., enzymes). We ran simulations for 10,000 time steps and then sampled the intact and relic communities. To quantify bias in diversity (b and c), we calculated “richness ratios” which reflect the number of species in the total DNA pool (intact + relic) divided by the number of species in the intact DNA pool in a simulation. |
Date | |
Source | [1] doi:10.1128/mBio.00637-18 |
Author | J. T. Lennon, M. E. Muscarella, S. A. Placella and B. K. Lehmkuhl |
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current | 02:10, 2 February 2021 | 1,280 × 1,080 (110 KB) | Epipelagic (talk | contribs) | Uploaded a work by J. T. Lennon, M. E. Muscarella, S. A. Placella and B. K. Lehmkuhl from [https://mbio.asm.org/content/9/3/e00637-18] {{doi|10.1128/mBio.00637-18}} with UploadWizard |
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