Open AccessThe spread of plasmids as a function of bacterial adaptability
Author(s) -
Tschäpe H.
Publication year - 1994
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1111/j.1574-6941.1994.tb00226.x
Subject(s) - biology , horizontal gene transfer , adaptability , plasmid , ecological niche , adaptation (eye) , transferability , gene , colonisation , ecology , evolutionary biology , genetics , mobile genetic elements , niche , function (biology) , genome , colonization , habitat , statistics , mathematics , logit , neuroscience
The horizontal spread of plasmids among natural bacterial populations serves as an evolutionary function for adaptation to the ups and downs in nature. Recent evolutionary challenges are the introduction of antibiotics and the creation of new environmental conditions in agriculture and medical care. As a consequence, surviving bacterial populations have acquired new genetic determinants which enable the colonisation and maintenance in distinct ecological niches. The acquisition of new genetic determinants can take place rather rapidly because of the plasmids' biology: their self‐transferability and their ability to pick up genes. As an example of horizontal gene transfer, from an ecological and evolutionary viewpoint, the emergence of resistance to streptothricins ( sat genes) is described.