PBIO 117 Lecture Notes - Wood-Decay Fungus, Agrobacterium, Erwinia
14 Sep 2013
School
Department
Course
Professor
Document Summary
Bacteria enter through wounds: disease management. Bio control can be effective (using other microbes to inhibit agrobacterium. Erwinia growth: rod shaped, peritichous flagella (on all surfaces, two main groups. Soft rot (renamed pectobacterium: fire blight of apple/pear. Native to north america, first appeared in 1780 (on trees from europe) Remove 1 ft up from infected area. Bees make efficient vectors, infect blossoms: fig. Ooze, bee vector, flower infection: management. Cut, paint and then cut the new stub that grows where the paint is later. Streptomycin & tetracycline: excessive use can promote resistance/ is a public health concern. Infection favored by high temp/soil moisture: produces pectolytic enzymes that break down plant tissue (fleshy organs like tubers, enter via crack/ wound, 2 sub species infect potato. Blackleg (astroseptica: 12-34 disease cycle, management. Pseudomonas: rod shaped, 1 to several polar flagella, produce florescent pigments in low fe environment. Can be used as identifying factor: p. syringae has over 50 pathovars.
