| leaf microbiota in an agroecosystem: spatiotemporal variation in bacterial community composition on field-grown lettuce. | the presence, size and importance of bacterial communities on plant leaf surfaces are widely appreciated. however, information is scarce regarding their composition and how it changes along geographical and seasonal scales. we collected 106 samples of field-grown romaine lettuce from commercial production regions in california and arizona during the 2009-2010 crop cycle. total bacterial populations averaged between 10(5) and 10(6) per gram of tissue, whereas counts of culturable bacteria were on ... | 2012 | 22534606 |
| prevalence and characterization of escherichia coli and salmonella strains isolated from stray dog and coyote feces in a major leafy greens production region at the united states-mexico border. | in 2010, romaine lettuce grown in southern arizona was implicated in a multi-state outbreak of escherichia coli o145:h28 infections. this was the first known shiga toxin-producing e. coli (stec) outbreak traced to the southwest desert leafy green vegetable production region along the united states-mexico border. limited information exists on sources of stec and other enteric zoonotic pathogens in domestic and wild animals in this region. according to local vegetable growers, unleashed or stray d ... | 2014 | 25412333 |