A new genus of Cryphonectriaceae isolated from Lagerstroemia speciosa in southern China

作者：Chen, S. F.^*; Liu, Q. L.; Li, G. Q.; Wingfield, M. J.; Roux, J.

来源：Plant Pathology, 2018, 67(1): 107-123.

DOI：10.1111/ppa.12723

• Lythraceae
• Myrtaceae
• Myrtales
• pathogenicity
• tree pathogens

Numerous species in the Cryphonectriaceae have been recorded on the Myrtales and many of these are economically important pathogens of Eucalyptus. Some species have also recently been shown to be endophytes of native Myrtaceae and to have undergone host jumps to infect Eucalyptus species established as exotics in plantations. Recent surveys in the GuangDong and HaiNan Provinces of South China reveal the presence of a species of Cryphonectriaceae associated with cankers on trees of Lagerstroemia speciosa (Lythraceae, Myrtales). Fungal structures were observed on the surface of dead bark covering cankers and on branch stubs. Multigene phylogenetic analyses were conducted based on DNA sequence comparisons of the partial LSU gene, ITS region of the nuclear ribosomal RNA gene and two regions of the -tubulin (BT) gene. The results revealed the presence of a previously undescribed genus and species in the Cryphonectriaceae. The fungus is described here as Chrysomorbus lagerstroemiae gen. et sp. nov. Inoculation tests showed that it is an aggressive pathogen on L.speciosa and that it can also infect Eucalyptus.

• 出版日期2018-1
• 单位中国林业科学研究院