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Protectingourcropsagainstthenumberoneplantthreat
Victorian scientists are leading two vital projects intended to defend Australian crops
fromoneoftheworld¡¯smostharmfulplantdiseases.
Xylella fastidiosa is a bacterium transmitted by common sap-sucking insects such as
leafhoppers, spittlebugs and sharpshooters and is considered the number one plant
biosecuritythreattoAustraliaandNewZealand.
Thisimportantresearch,whichisbeingledbyAgricultureVictoria,isplayingacritical
roleinhelpingtosafeguardAustralianagriculturefromexoticbiosecuritythreats.
AgricultureVictoriaSeniorResearchScientistDrRachelMann¡¯sisworkingonanational
planformethodsofdetectionandsurveillanceoftheXylellafastidiosapathogenthrough
the development of innovative diagnostic tools, while Horsham-basedcolleague Dr Piotr
TrebickiisexamininghowthediseasewouldmanifestintheAustralianenvironment.
'TheimpactofXylellafastidiosaoverseashasbeencatastrophic,infectingmorethan200
millioncitrus trees inBrazil, destroying one millionolive trees in Italy anddevastating
the Californian grape sector ? causing annual losses in excess of US$100 million,' Dr
Mannsaid.
'TogetherwithHortInnovationundertheHortFrontiersstrategicco-investment,weare
workingonanationalplanformethodsofdetectionandsurveillanceofXylellafastidiosa
throughthedevelopmentofinnovativediagnostictools.'
This research, which is also supported by New South Wales, Western Australian and
Queensland state-based primary industries and the Ministry for Primary Industries in
New Zealand, will ensure that the major diagnostic labs in Australia and New Zealand
thatprovidediagnosticcapabilitytostateandnationalbiosecurityagenciesandindustry
arepreparedshouldthepathogenpresenthere.
Dr Trebicki¡¯s research, which is being conducted in collaboration with Wine Australia,
HortInnovationandtheNSWDepartmentofPrimaryIndustries,willaddtoAustralia¡¯s
biosecurityarsenal,withincreasedknowledgeofthediseasewithinanAustraliancontext.
Thisproject,whichisbeingsupportedbyinternationalresearchpartnersinNewZealand,
SpainandAmerica,seekstounderstandthebiologyandpopulationdynamicsofinsects
whichmaytransmitXylellafastidiosainat-riskcropssuchasgrape,citrus,cherryand
olive plantations and determine the critical times of the year when disease spread may
bemostrapid.
TheseproactiveresearchprojectswillensureAustraliaisonthefrontfoot,initsdefence
againstXylellafastidiosa.
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