Identification and pathogenicity of Chrysoporthe cubensis on Eucalyptus and Syzygium spp. in South China

Show simple item record Chen, ShuaiFei Gryzenhout, Marieka Roux, Jolanda Xie, YaoJian Wingfield, Michael J. Zhou, Xudong 2010-10-27T06:13:05Z 2010-10-27T06:13:05Z 2010-09
dc.description.abstract The genus Chrysoporthe includes important pathogens of plantation-grown Eucalyptus spp. and has been reported from several tree genera in the order Myrtales in tropical and subtropical areas of the world. During disease surveys in South China, fruiting structures typical of Chrysoporthe spp. were observed on cankers on Eucalyptus spp. and Syzygium cumini trees. The aim of this study was to confirm the identity of the Chrysoporthe cubensis infecting the Eucalyptus spp. and S. cumini and to test the pathogenicity of the fungus. Following glasshouse trials to select virulent isolates , field inoculations were undertaken to screen different commercial Eucalyptus genotypes for their susceptibility to the fungus. Isolates were characterized based on their morphology and DNA sequence data for the β-tubulin and internal transcribed spacer regions of the ribosomal DNA. Results showed that the putative pathogen represented the Asian form of C. cubensis, which occurred on numerous different Eucalyptus spp. and hybrid clones as well as S. cumini. Field inoculations showed that all six of the Eucalyptus genotypes tested are susceptible to infection by C. cubensis. Significant differences were observed between them, providing prospects to select disease-tolerant planting stock in the future. en
dc.description.sponsorship This study was initiated through the bilateral agreement between South Africa and China, and funded through projects 30771732 and 2007DFA31190. We thank the members of the Tree Protection Cooperative Programme (TPCP) for financial and logistical support; T. Burgess (Murdoch University, Australia) for providing some isolates used in this study; H. Groeneveld and M. van der Linde for assistance with the statistical analyses, and colleagues at the LeiZhou Forestry Bureau (X.-T. Mou, G.-X. Zhao, and C.-Y. Xie) for their valuable assistance in the field. en_US
dc.identifier.citation Chen, SF, Gryzenhout, M, Roux, J, Xie, YJ, Wingfield, MJ & Zhou, XD 2010, 'Identification and Pathogenicity of Chrysoporthe cubensis on Eucalyptus and Syzygium spp. in South China', Plant Disease, vol. 94, no. 9, pp. 1143-1150. [] en
dc.identifier.issn 0191-2917
dc.identifier.other 10.1094/PDIS-94-9-1143
dc.language.iso en en_US
dc.publisher American Phytopathological Society en_US
dc.rights American Phytopathological Society en_US
dc.subject Chrysoporthe cubensis en
dc.subject Syzygium cumini en
dc.subject Cubensis en
dc.subject.lcsh Eucalyptus -- Diseases and pests -- China en
dc.subject.lcsh Pathogenic fungi -- China -- Identification en
dc.title Identification and pathogenicity of Chrysoporthe cubensis on Eucalyptus and Syzygium spp. in South China en
dc.type Article en

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