02517naa a2200253 a 450000100080000000500110000800800410001902200140006002400380007410000170011224501430012926000090027250001930028152015820047465000310205665000260208765000150211365000110212865000190213970000200215870000150217870000210219377300490221410501642019-11-11       2013    bl uuuu     u00u1 u    #d  a1878-61467 a10.1016/j.funbio.2012.12.0022DOI1 aPÉREZ, C.A.  aSpecies of Mycosphaerellaceae and Teratosphaeriaceae on native Myrtaceae in UruguaybEvidence of fungal host jumps.h[electronic resource]  c2013  aArticle history: Received 25 July 2012 / Received in revised form 1 December 2012 / Accepted 6 December 2012 / Available online 21 December 2012. Corresponding Editor: H. Thorsten Lumbsch.  aABSTRACT: Mycosphaerella species are well-known causal agents of leaf diseases on many economically and ecologically important plant species. In Uruguay, a relatively large number of Mycosphaerellaceae and Teratosphaeriaceae are found on Eucalyptus, but nothing is known of these fungi on native Myrtaceae. The aim of this study was to identify Mycosphaerellaceae and Teratosphaeriaceae species associated with leaf diseases on native Myrtaceae in Uruguay and to consider whether host jumps by the pathogen from introduced Eucalyptus to native Myrtaceae have occurred. Several native forests throughout the country were surveyed with special attention given to those located close to Eucalyptus plantations. Five species belonging to the Mycosphaerellaceae and Teratosphaeriaceae clades were found on native Myrtaceous trees and three of these had previously been reported on Eucalyptus in Uruguay. Those occurring both on Eucalyptus and native Myrtaceae included Pallidocercospora heimii, Pseudocercospora norchiensis, and Teratosphaeria aurantia. In addition, Mycosphaerella yunnanensis, a species known to occur on Eucalyptus but not previously recorded in Uruguay, was found on leaves of two native Myrtaceous hosts. Because most of these species occur on Eucalyptus in countries other than Uruguay, it appears that they were introduced in this country and have adapted to be able to infect native Myrtaceae. These apparent host jumps have the potential to result in serious disease problems and they should be carefully monitored.  © 2012 The British Mycological Society.  aENFERMEDADES EN EUCALYPTUS  aENFERMEDADES FUNGOSAS  aEUCALYPTUS  aHONGOS  aMYCOSPHAERELLA1 aWINGFIELD, M.J.1 aALTIER, N.1 aBLANCHETTE, R.A.  tFungal Biology, 2013gv.117, no.2, p.94-102.