Bacterial gliding motility: Multiple mechanisms for cell movement over surfaces

Authors
Citation
Mj. Mcbride, Bacterial gliding motility: Multiple mechanisms for cell movement over surfaces, ANN R MICRO, 55, 2001, pp. 49-75
Citations number
130
Language
INGLESE
art.tipo
Review
Categorie Soggetti
Microbiology
Journal title
ANNUAL REVIEW OF MICROBIOLOGY
ISSN journal
0066-4227 → ACNP
Volume
55
Year of publication
2001
Pages
49 - 75
Database
ISI
SICI code
0066-4227(2001)55:<49:BGMMMF>2.0.ZU;2-B
Abstract
The mechanisms responsible for bacterial gliding motility have been a myste ry for almost 200 years. Gliding bacteria move actively over surfaces by a process that does not involve flagella. Gliding bacteria are phylogenetic a lly diverse and are abundant in many environments. Recent results indicate that more than one mechanism is needed to explain all forms of bacterial gl iding motility. Myxococcus xanthus "social gliding motility" and Synechocys tis gliding are similar to bacterial "twitching motility" and rely on type IV pilus extension and retraction for cell movement. In contrast, gliding o f filamentous cyanobacteria, mycoplasmas, members of the Cytophaga-Flavobac terium group, and "adventurous gliding" of M. xanthus do not appear to invo lve pili. The mechanisms of movement employed by these bacteria are still a matter of speculation, Genetic, biochemical, ultrastructural, and behavior al studies are providing insight into the machineries employed by these div erse bacteria that enable them to glide over surfaces.