Interactions between Escherichia coli and the plant-parasitic nematode Meloidogyne javanica

被引:1
|
作者
Maghodia, A.B. [1 ]
Spiegel, Y. [1 ]
Sela, S. [2 ,3 ]
机构
[1] Department of Nematology, Institute of Plant Protection, Volcani Center, Bet Dagan, Israel
[2] Department of Food Sciences, Institute for Technology and Storage of Fresh Produce, Volcani Center, Bet Dagan, Israel
[3] Department of Food Sciences, Institute for Technology and Storage of Fresh Produce, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
来源
Journal of Applied Microbiology | 2008年 / 105卷 / 06期
关键词
Aims: To determine the potential of the plant-parasitic nematode Meloidogyne [!text type='java']java[!/text]nica to serve as a temporary reservoir for Escherichia coli. Methods and Results: The adhesion to and persistence of E. coli on the surface of M. [!text type='java']java[!/text]nica were evaluated at different times and temperatures. A pure culture of green fluorescent protein (GFP) tagged E. coli was mixed with ca. 1000 J2 M. [!text type='java']java[!/text]nica for 2 h at 25°C. The nematodes were then washed and the rate of the adhesion of the bacteria to the nematodes was determined by counting the viable nematode-associated E. coli; and by fluorescence microscopy. A dose-dependent adhesion rate was observed only at a bacterium to nematode ratio of 104-106 : 1. The adhesion of E. coli to the nematodes was also tested over a 24 h-period at 4°C; 25°C and 37°C. At 4°C and 37°C; maximal adhesion was observed at 5 h; whereas at 25°C; maximal adherence was observed at 8 h. Survival experiments showed that the bacteria could be detected on the nematodes for up to 2 weeks when incubated at 4°C and 25°C; but not at 37°C. Conclusions: Under laboratory conditions; at 4°C and 25°C; M. [!text type='java']java[!/text]nica could serve as a temporary vector for E. coli for up to 2 weeks. Significance and Impact of the Study: These findings support the hypothesis that; in the presence of high concentrations of E. coli; M. [!text type='java']java[!/text]nica might serve as a potential vehicle for the transmission of food-borne pathogens. © 2008 The Authors;
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页码:1810 / 1816
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