R-type pyocin is required for competitive growth advantage between Pseudomonas aeruginosa strains.
R-type pyocin is a bacteriophage tail-shaped bacteriocin produced by Pseudomonas aeruginosa, but its physiological roles are relatively unknown. Here we describe a role of R-type pyocin in the competitive growth advantages between P. aeruginosa strains. Partial purification and gene disruption revealed that the major killing activity from the culture supernatant of PA14 is attributed to R-type pyocin, neither F-type nor S-type pyocins. These findings may provide insight into the forces governing P. aeruginosa population dynamics to promote and maintain its biodiversity.
Heo
Yun-Jeong
YJ
Department of Life Science, Sogang University, Seoul 121-742, Korea.
Chung
In-Young
IY
Choi
Kelly B
KB
Cho
You-Hee
YH
D017753:Ecosystem; D005798:Genes, Bacterial; D009154:Mutation; D011157:Population Dynamics; D011550:Pseudomonas aeruginosa / Q000145:classification / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D011709:Pyocins / Q000378:metabolism*; D013045:Species Specificity
D011709:Pyocins