Plasmid persistence: costs, benefits, and the plasmid paradox

Microbial Evolution: Towards Resolving the Plasmid Paradox

Plasmids play a key role in bacterial evolution by providing bacteria with new and important functions, such as antibiotic resistance. New research shows how bacterial regulatory evolution can stabilize bacteria-plasmid associations and catalyze evolutionary innovation.

The Benefits, Costs, and Paradox of Revenge

In this article, we examine the psychology of revenge. We begin by discussing challenges associated with defining revenge. We then review the relative costs and benefits associated with taking revenge. Although revenge can deter future harm, promote cooperation, and restore avengers’ self-worth and power, it can also contribute to conflict escalation and adverse psychological outcomes for aveng...

Modelling the spatial dynamics of plasmid transfer and persistence.

Bacterial plasmids are extra-chromosomal genetic elements that code for a wide variety of phenotypes in their bacterial hosts and are maintained in bacterial communities through both vertical and horizontal transfer. Current mathematical models of plasmid-bacteria dynamics, based almost exclusively on mass-action differential equations that describe these interactions in completely mixed enviro...

Plasmid isolation. Fatemeh Mehrpooyan*

Plasmid Curing Activity of Five Plant Extracts on Multiple Resistant Plasmid Bearing Klebsiella Pnumoniae Strains

ABSTRACT The curing of five medicinal plant extracts (Satureia hortensis, Glycyrrhiza glabra, Teucrium Pollium, Myrtus Communis, Eukalypetus globolus) on plasmid bearing strains of klebsilla pnenmoniae resistance to multiple antibiotics were investigated. Alcoholic and maceration extraction were carried out from leaves, fruits or roots of the above plants. Mimimum inhibitory concentrations (MI...