Correlating transport behavior with cell properties for eight porcine Escherichia coli isolates.
In this study we investigate how growth stage and depositional environment affect variability of cell properties and transport behavior of eight porcine E. coli isolates. We compared the surface properties for cells harvested during exponential and stationary growth phase and their transport behavior through columns packed with either uncoated or Fe-coated quartz sand. We then investigated correlations between measured cell properties and fitted bacterial attachment efficiencies. For both growth stages we found that bacterial attachment efficiencies in the uncoated quartz sand varied among the eight different isolates by over an order of magnitude whereas attachment efficiencies in the Fe-coated sands varied by a factor of less than two. With the exception of one isolate, growth condition had minimal impact on attachment efficiencies to the uncoated sands. A strong and statistically significant inverse relationship was observed between bacterial attachment efficiencies in the uncoated quartz sand columns and log-transformed zeta potential, whereas a mild yet statistically significant relationship between bacterial attachment efficiencies in the Fe-coated sands and cell width was observed. For the experimental conditions used in our study, we found that variability in E. coli transport was more dependent on the depositional environment than on growth conditions.
Bolster
Carl H
CH
U.S. Department of Agriculture-Agricultural Research Service, Bowling Green, Kentucky 42104, USA. carl.bolster@ars.usda.gov
Cook
Kimberly L
KL
Marcus
Ian M
IM
Haznedaroglu
Berat Z
BZ
Walker
Sharon L
SL
D018829:Adhesins, Bacterial / Q000378:metabolism; D018830:Adhesins, Escherichia coli / Q000378:metabolism; D000818:Animals; D001422:Bacterial Adhesion; D001692:Biological Transport; D002462:Cell Membrane / Q000378:metabolism*; D004784:Environmental Monitoring / Q000379:methods; D004926:Escherichia coli / Q000166:cytology / Q000302:isolation & purification* / Q000378:metabolism; D029968:Escherichia coli Proteins / Q000378:metabolism; D005243:Feces; D036781:Fimbriae Proteins / Q000378:metabolism; D009068:Movement; D005810:Multigene Family; D013499:Surface Properties; D013552:Swine; D018508:Water Purification
D018829:Adhesins, Bacterial; D018830:Adhesins, Escherichia coli; D029968:Escherichia coli Proteins; C118376:antigen 43, E coli; C058769:fimH protein, E coli; D036781:Fimbriae Proteins