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Unformatted text preview: orchard. 5. (2pts) Give two vectors of bacterial plant pathogens. Flies and pollinating insects 6. (2pts) Explain the role of bacterial ooze in Fire Blight epidemics. The ooze is formed my multiplying bacteria and attract flies. The flies spread the bacteria in this ooze to other hosts. 7. (1pt) What is one characteristic of most bacterial leaf spots? Numerous angular spots 8. (2pts) What is bacterial streaming? How is it used in diagnosis of bacterial diseases of plants? Bacterial streaming is the flow of bacteria out of infected plant tissue. An infected leaf is cut open and then a drop of water is added before placing under a microscope. Large numbers of streaming bacteria can be seen is the plant has a bacterial infection....
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This note was uploaded on 03/22/2008 for the course PP 315 taught by Professor Shew during the Spring '08 term at N.C. State.
- Spring '08