@article{GroteKrysciakPetersenetal.2016,
  author    = {Jessica Grote and Dagmar Krysciak and Katrin Petersen and Simon G{\"u}llert and Christel Schmeisser and Konrad U. F{\"o}rstner and Hari B. Krishnan and Harald Schwalbe and Nina Kubatova and Wolfgang R. Streit},
  title     = {The Absence of the N-acyl-homoserine-lactone Autoinducer Synthase Genes tral and ngrl Increases the Copy Number of the Symbiotic Plasmid in Sinorhizobium fredii NGR234},
  journal   = {Frontiers in Microbiology},
  volume    = {7},
  number    = {1858},
  doi       = {10.3389/fmicb.2016.01858},
  year      = {2016},
}