Puccinia psidii Winter MAY10 Tasmania (c). of University M. Glen, and ande) b,d (a, Brazil Viçosa, of University Federal .ZuaEV lea C l ,CuoMF rç RN, Graça MMF, 6237 5689. (03) Tasmania, of K, Couto AC, Old KeyUniversity Contacts:Glen, Morag EAV, Alfenas Zauza 429. 93: 2009.Disease Plant L. Loope J, Uchida 6. 35:549-562. Pathology Plant Australasian 2006. C. K,Grgurinovic JA,Thomas Simpson 57:687-701. Pathology 2008.Plant AC. 5. M, Alfenas Glen SRH, Langrell General of 2009. S. Journal Namba H, 4. Horie H, S,Hamamoto Kagiwada M, Kakishima S, 3. Uematsu T, Kawanishi Mohammed MJ, EAV,Wingfield Zauza AC, M,Alfenas Glen 2. 1. Further Reading: ofAustralia, coast east inFlorida.Alongthehas become weed an invasive quinquenervia Melaleuca P. psidii verylittlehave shown resistance. resistance, though some other Australianspecies species tested havesome degree of genetic susceptible clones. Most populationsof eucalypt of the clone. Highmortalityrates may occur in determinedis mainly byresistance or susceptibility clonal,impact inareaslargely with a suitable climate minor effect. Aseucalypt plantations in Brazilare In initsthe native wild, range, Impact: many speciesof Myrtaceae. P. psidii Host Range: 2007, P. psidii in Jamaicain the1930s.affectedindustry the allspice eucalypt plantations in Brazilandalsorequires control in of plant species in the Myrtaceae.family First described on guava, psidii Puccinia Classification: Disease Common Name: Syzygium jambos; of infections repeated causedby branching andmultiple distortion Fig. 1. a species in river ecosystems. Plant Pathology 75:428-431. 75:428-431. Plant Pathology Puccinia psidii; psidii; Puccinia : is an effective control biological for infects young leaves, shoots and fruits of rie nJpn on Japan, arrived in (Fig. 1) isnative to South Americaand isnot present inAustralia. It causes rust on a widerange (d) Rust ina wide range of Myrtaceous species K: Fungi,D: Basidiomycota,C: Pucciniomycetes, O: F: Pucciniales, Pucciniaceae Guava rust,Eucalyptus rust Psidium guajava; Psidium (a) Symptoms ongrandis Eucalyptus M. quinquenervia , an Australian native that Pathogen ofthemonth Pathogen ofthemonth P. psidii P. psidii Metrosideros polymorpha b b (e) Urediniospores. Photos: A. Alfenas, A. Photos: Urediniospores. (e) causes has onlya is a key P. psidii seedling; Stem (b) P. cygnorum rustsareFew recorded on Myrtaceae. Theseinclude Key Distinguishing Features: repeated defoliations able to kill12m tall trees. onSyzygium with jambos Hawaii, in epiphytotics fe,isueiilstage, uredinial its often, Australia. In Brazil, xanthostemonis Physopella Australia. scale application to plantations or native vegetation in or environmentally feasibleforeconomically broad- control ispossible, but toChemical be unlikely Control: be used to identifyand detect paraphyses inurediniosori. DNAanalysescanalso and the lackof marginal characters of urediniospores featuresDistinguishing includemicroscopic that isnot one of tothe be aboveislikely Campomanesia Maffia LA. 2010. Australasian Plant Pathology. Plant Pathology. LA. 2010. Australasian Maffia guava orchards. Anew strainof the rust severely CL. 2007. Australasian Plant Pathology 36:1-16. 36:1-16. Pathology Plant Australasian CL. 2007. E. grandis, E. grandis, cuttings imported from Hawaii. has spread to Florida, California and Hawaii. In andHawaii. has spread toFlorida, California P. psidii P. psidii uzaericifolia rust on Kunzea , a telial (c) c spp. Rust on anyMyrtaceae species hkpoarossmaniae, Phakopsora became a significantin became a problem d – – hsplajueli, Physopella May 2010 May 2010 on Xanthostemon P. psidii. e P. psidii occurs on In press or more , and spp. in . .