Inocutis jamaicensis (Murr.) Gottlieb, Wright & Moncalvo NOV08 ab may beunderestimated. are not always formed. Hence, impact fruitbodies the xylemandare prone to stem breakage. Again, basesor stems swollen with bark cracking exposing varyfromUruguay 8-20%. Affected trees, have Incidence of stem rot in formed. are not always years to appear and fruitbodies Substantial rot and diseaseexpressionmay take chlorotic leaveswitha tendency to curl-under. with the mainsymptom being the formation of small decay white rot on the main stem or major branches, Argentina.grapevines in Infected vinesdevelopa demalvónisan unusualdiseaseaffecting Hoja Signs, Symptoms & Impact: affected. viminalis Key Contacts: M(2006) Fischer, (2006) etal. Lupo 308 1(3): Progress Mycological Moncalvo.(2002) & Wright Gottlieb, Further Reading: in demalvón. It also causes a stem rot known asHoja grapevines ( rotwhite in the trunks and major branches of families on both deadand livinghosts. It causes a species (native andintroduced) belongingto 16 to Patagonia (Argentina). It occurs on angiosperm been Americas, having reported from Arizona (USA) jamaicensis Distribution, &Pathology: HostRange misidentifications Synonyms & Classification: Disease Perez andGuillermo Martinez PhotoSebastian credits: Fig. 1. by Eucalyptus spp Inocutis jamaicensis jamaicensis Inocutis Stem swelling and bark cracking on Stem andcracking swelling bark : Acacia longifolia and possibly Vitis vinifera Pathogen ofthemonth Pathogen ofthemonth Guillermo Perez, guill Guillermo Perez, htptooi Mediterranea Phytopathologia htptooi Mediterranea Phytopathologia . Plantations of E. globulus : nntsjmiess nntssplitbergeri jamaicensis, Inonotus O:K: Fungi, D: C:Homobasidiomycetes, ,, F: de ma Inocutis stem rot in eucalypt species, ‘Hoja is a widespread is a widespread in the (b); (b); E. saligna E. globulus ), anda foliar symptom I. jamaicensis sas affected. also is in Brazil havebeen ermo.perez@ fabi.up.ac. plantations in basidiomes on a grapevine stem (c); basidia and spore (d). (d). andspore basidia (c); stem grapevine ona basidiomes Eucalyptus globulus Eucalyptus and E. c 45 (supplement), S30-S142. 45 (supplement), S110-S116. South America should bemonitored. plant material stocks andgrapevine from North and and Acacia industry and native and plantation forests of significant quarantine threat. The Australian wine diverse climatic conditions and therefore poses a I. jamaicensis Quarantine: ofcoincide withlowlevels inoculummayproveuseful. forestry operationsand forestrytiming operations to during manipulate branch wounding size, minimizing Ingrapevines. forestry,in density to using stocking and the use of woundtreatments may reduce incidence been fully investigated. duringpruningProper hygiene common infection point. Controlmeasures havenot Though largedead or dyingbranches are alsoa Wood rot fungi commonlyinfect through wounds. &Control: Management methods of detection inhavebeendeveloped. wood are notAs basidiocarps formed, always molecular 6-7 x 4-5 μ toabundant yellowish basidiospores dark brownelliptic monomitic. are 12-15 xBasidia 5-6 brown with 3-5 pores per mm. The systemhyphal is surface isbuff to dark black zonation. Thehymenial upper surface islight to dark brown with some grey- areBasidiocarps resupinate to effused-reflexed. Their Key Distinguishing Features: (a); Transverse section through section (a); Transverse za; Francisco za; Tov m. – could be affected.severely Wood products, – can colonise a wide variety of acan widevariety colonise hosts in November lvón’ or‘chloroticleaflvón’ ingrapevines roll’ November ar, Murdoch Uni., 9360 ar, Murdoch Uni., Ph: 6272 d d E. globulus μ m andproduce 2008 2008 stem affected Eucalyptus