Tiffany N. Batarseh
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View article: Distinguishing among evolutionary and ecological processes shaping microbiome dynamics
Distinguishing among evolutionary and ecological processes shaping microbiome dynamics Open
Evolution is defined as the change in allele frequency over time as a result of either neutral processes, such as genetic drift, or as an adaptive process in response to selection. In contrast, ecological dynamics describe changes in popul…
View article: Patterns of Fitness and Gene Expression Epistasis Generated by Beneficial Mutations in the <i>rho</i> and <i>rpoB</i> Genes of <i>Escherichia coli</i> during High-Temperature Adaptation
Patterns of Fitness and Gene Expression Epistasis Generated by Beneficial Mutations in the <i>rho</i> and <i>rpoB</i> Genes of <i>Escherichia coli</i> during High-Temperature Adaptation Open
Epistasis is caused by genetic interactions among mutations that affect fitness. To characterize properties and potential mechanisms of epistasis, we engineered eight double mutants that combined mutations from the rho and rpoB genes of Es…
View article: Comparative genomics of the Liberibacter genus reveals widespread diversity in genomic content and positive selection history
Comparative genomics of the Liberibacter genus reveals widespread diversity in genomic content and positive selection history Open
‘ Candidatus Liberibacter’ is a group of bacterial species that are obligate intracellular plant pathogens and cause Huanglongbing disease of citrus trees and Zebra Chip in potatoes. Here, we examined the extent of intra- and interspecific…
View article: Phenotypic and Genotypic Adaptation of <i>Escherichia coli</i> to Thermal Stress is Contingent on Genetic Background
Phenotypic and Genotypic Adaptation of <i>Escherichia coli</i> to Thermal Stress is Contingent on Genetic Background Open
Evolution can be contingent on history, but we do not yet have a clear understanding of the processes and dynamics that govern contingency. Here, we performed the second phase of a two-phase evolution experiment to investigate features of …
View article: Phenotypic and genotypic adaptation of<i>E. coli</i>to thermal stress is contingent on genetic background
Phenotypic and genotypic adaptation of<i>E. coli</i>to thermal stress is contingent on genetic background Open
Evolution can be contingent on history, but we do not yet have a clear understanding of the processes and dynamics that govern contingency. Here we performed the second phase of a two-phase evolution experiment to investigate features of c…
View article: Using Genomes and Evolutionary Analyses to Screen for Host-Specificity and Positive Selection in the Plant Pathogen Xylella fastidiosa
Using Genomes and Evolutionary Analyses to Screen for Host-Specificity and Positive Selection in the Plant Pathogen Xylella fastidiosa Open
Xylella fastidiosa causes devasting diseases to several critical crops. Because X. fastidiosa colonizes and infects many plant species, it is important to understand whether the genome of X. fastidiosa has genetic determinants that underli…
View article: Using genomes and evolutionary analyses to screen for host-specificity and positive selection in the plant pathogen <i>Xylella fastidiosa</i>
Using genomes and evolutionary analyses to screen for host-specificity and positive selection in the plant pathogen <i>Xylella fastidiosa</i> Open
Xylella fastidiosa infects several economically important crops in the Americas, and it also recently emerged in Europe. Here, using a set of Xylella genomes reflective of the genus-wide diversity, we performed a pan-genome analysis based …
View article: Genetic Mutations That Drive Evolutionary Rescue to Lethal Temperature in <i>Escherichia coli</i>
Genetic Mutations That Drive Evolutionary Rescue to Lethal Temperature in <i>Escherichia coli</i> Open
Evolutionary rescue occurs when adaptation restores population growth against a lethal stressor. Here, we studied evolutionary rescue by conducting experiments with Escherichia coli at the lethal temperature of 43.0 °C, to determine the ad…