Salmonella plant surfaces

No internalization of E. coli 0157 H7 or Salmonella when introduced into the water for irrigating 3-33-day posttransplanted lettuce plants Surface sterilization using 80% ethanol followed by 0.1% HgCl2 Erickson et al. (2008)... 

Internalization of E. coli 0157 H7 and Salmonella into growing Arabidopsis plants when pathogens were introduced into soil No surface sterilization Confocal microscopy to detect internalized populations Cooley et al. (2003)... 

No internalization of Salmonella in tomato fruit when inoculum was applied to the roots of growing plants No surface sterilization Screening for Salmonella in ripened fruit Jablasone et al. (2004)... 

It has been observed that pathogens such as Salmonella and E. coli 0157 H7 preferentially attach to cut surfaces and natural openings such as stomata, whereas common epiphytes such as Ps. fluoresecens colonize the intact plant tissue (Li et al., 2008 Melotto et al., 2006 Seo and Frank, 1999 Takeuchi and Frank, 2001). It is known that attachment of human pathogens is an active process which requires the bacterium to be in a viable state although the actual internalization process can be passive (Solomon and Matthews, 2006). 

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