Kennedy and King 1962

Xanthomonas fragariae OCT10 Kennedy & King (1962) Kennedy & King(1962) Young Further Reading: early detection limited dispersalmeans of perhaps to theabsence ofalternate and hosts incursions have beensuccessfully eradicated, owing latently infected planting material. Previous alllinkedwith Zealand, the importationNew of incursions and border detections in Australia and Over the past 40 years there havebeen several Emergency PlantPest ResponseDeed. under category 3 asa Quarantine Threat under the irrigation.overhead by Itclassified is is favoured many other bacterial diseasesof foliage, losses prevalent, yield to ALScanbe severe. Like apparent whenconditionsare cooland wet. When not surprising that the effects of infection are most Given itsnormal distribution in cooler climates, it is Impact: provingfruitless. all Rosaceae attempted inoculations onto other members of the host specific. Its onlyknown host is strawberry, with Like most Host Range: of flowers occasionally theplant. America, South Americaand Europe, whereit causes si fragariaeXanthomonas Classification: K: ; P: ; C: ; O: ; agent Causal Common name: Fig. 1. Photo credits A. Young. A. credits Photo Key Contacts: Gillings (1976) &Fahy McGechen ab et al. et al. Upper leaf symptoms (a), bacterial oozing b), and lower leaf symptoms caused by caused by symptoms leaf lower and b), oozing bacterial (a), symptoms leaf Upper et al. strains, (2010) (2010) (1998) (1998) : Anthony Young, Agri-Sciences, DEEDI, Indooroopilly DEEDI, Anthony Young, Agri-Sciences, . Angular LeafAngular Spot (ALS) Xanthomonas fragariae utaainPatPtooy(submitted). Pathology Plant Australasian Australian Plant Pathology PlantPathology Australian Phytopathologv Pathogen ofthemonth Pathogen ofthemonth Australian Plant Pathology Pathology Plant Australian (Fig. 1) isan exoticbacterial pathogen of strawberry. It distributed isnormally inNorth X. fragariae F: ; G: Xanthomonas. X. fragariae 52, , as well as , aswell 873-875. X. fragariae 27 is very , 97-103. 5 , 57-59. gnificant yield losses viadestructiongnificant of yieldlosses the leavesand n odpyoaiaintechniques. and goodphytosanitation important as the use of disease-free planting material used to mitigate against losses to ALS,but isnot as been successfulin the past. Coppersprayscan be The best form of control is eradication, whichhas Control: often cultured, but is notpathogenic. A currently undescribed xanthomonads. characteristicof turneventually yellow, faster-growing growth-rate inferior, round whitish colonies that culturesofshould yield but numerically-superior conduct a dilutionserieson water-eluted ooze. This leaves, the best wayto isolate manypotentialusually contaminantson strawberry a week to appear on culture medium. As there are X. fragariae disease. confirmed, itthat isunlikely it could be anyother ALSsymptoms, exhibit and bacterial oozeis fromdistinguishable anyother disease. If plants The foliar symptoms of areimmediatelyALS Key Distinguishing Features: , soon Boggo Rd. [email protected] Rd. Boggo soon , is a fastidious bacteriumnearly andtakes ais fastidious – – October 2010 October 2010 c atooa fragariae Xanthomonas Xanthomonas Xanthomonas X. fragariae species is is to (c). (c).