3.Pantoea(泛生菌属) ·Formerly E.herbicola(草生欧文氏菌) ·Straight rod-.shaped(直杆状) ·Peritrichous flagella(most)(周生鞭毛) 。G- ·facultative saprophyte(兼性腐生) ·Diseases caused Maize bacterial wilt(玉米细菌性萎蔫病) Pineapple brown rot(菠萝细菌性褐腐病)
3. Pantoea (泛生菌属) • Formerly E. herbicola (草生欧文氏菌) • Straight rod-shaped（直杆状） • Peritrichous flagella (most)（周生鞭毛） • G- • facultative saprophyte（兼性腐生） • Diseases caused Maize bacterial wilt（玉米细菌性萎蔫病） Pineapple brown rot（菠萝细菌性褐腐病）
4.Pseudomonas（假单胞杆菌属 Straight(most)or curved(few)rods(多数直杆，少数弯曲) One to several polar fllagella(极生鞭毛) 6- Production of fluorescent pigments(Most)(大多数产生荧光色素)
4.Pseudomonas (假单胞杆菌属) – Straight(most) or curved(few) rods（多数直杆，少数弯曲） – One to several polar fllagella（极生鞭毛） – G- – Production of fluorescent pigments (Most)（大多数产生荧光色素）
P.sryingae pv.lachrynams(丁香假单胞菌黄瓜致病变种) cucumber bacterial angular leaf spot(黄瓜细菌性角 斑病) ·Infect through stoma/wound(气孔/伤口) Spreading intercellularly Dispersed polygonal(多角 形)leaf spots Seeds/diseased plant residues carry primary inoculum(接种体) Transmitted by rain/insect ©T.A.ZHer. Management Free bacteria multiply materials Field sanitation Antibiotics-streptomycin
P. sryingae pv.lachrynams（丁香假单胞菌黄瓜致病变种） →cucumber bacterial angular leaf spot (黄瓜细菌性角 斑病) • Infect through stoma/wound（气孔/伤口） • Spreading intercellularly • Dispersed polygonal (多角 形) leaf spots • Seeds/diseased plant residues carry primary inoculum (接种体） • Transmitted by rain/insect • Management Free bacteria multiply materials Field sanitation Antibiotics- streptomycin
5.Ralstonia(劳/拉尔氏菌属) ·Formerly P.solanacearum(茄青枯假单胞杆菌) ·No production of fluorescent pigments(不产生荧光色素) Straight(most)or curved(few)rods ·Polar fllagella 6- Diseases caused wilting (potato,tomato,pepper,eggplant,tobacco)
5. Ralstonia （劳/拉尔氏菌属） • Formerly P. solanacearum (茄青枯假单胞杆菌) • No production of fluorescent pigments（不产生荧光色素） • Straight(most) or curved(few) rods • Polar fllagella • G- • Diseases caused wilting (potato, tomato, pepper, eggplant,tobacco)
R.solanacearum(青枯劳尔氏菌) bacterial wilt of nightshade family(茄科植物青枯 症】 ● whole plant acute wilt, no discolouration (全株急速萎蔫，不变色) ● brown Xylem in stem/tuber (茎/块茎木质部变褐) soil/tuber/seedling-borne (土壤/块茎/种苗带菌传播) infect via root wounds (通过根部伤口侵染) move systemically through the xylem (由木质部全身性地转运) UGA-ExL Plant Pathe
R. solanacearum (青枯劳尔氏菌) → bacterial wilt of nightshade family (茄科植物青枯 病) • whole plant acute wilt, no discolouration （全株急速萎蔫，不变色） • brown Xylem in stem/tuber （茎/块茎木质部变褐） • soil/tuber/seedling-borne （土壤/块茎/种苗带菌传播） • infect via root wounds （通过根部伤口侵染） • move systemically through the xylem （由木质部全身性地转运）