Management of an incursion of sugarcane smut in Australia

摘要: Sugarcane smut is caused by the fungus Ustilago scitaminea, which primarily spread wind-borne spores and infected sugarcane cuttings. Itwas identified as a high-risk exotic disease in pest risk analysis conducted 1997, contingency plan to deal with incursions was prepared 1997. reported for first time Australia Ord River Irrigation Area (ORIA) of Western July 1998. The quickly through susceptible cultivars NCo310 Q117 (30% crop) eradication not feasible. Quarantine regulations were enacted Queensland New South Wales reduce plant material or appliances. ORIA cane growers cooperated ploughing out heavily infested fields had removed all 2001. This has reduced from ORIA. Extensive surveys over 44 000 ha have failed detect smut. Australian are being screened resistance Indonesia ORIA, 75% tested Breeding commenced smut-resistant been propagated preparation possible incursions. DNA fingerprinting isolates collected showed that identical. Further screening around world little variation except Thailand, Philippines Taiwan where there significant between within this region other countries.