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Australasian Plant Pathology

, Volume 34, Issue 4, pp 587–590 | Cite as

DNA based characterization of Ceratocystis fimbriata isolates associated with mango decline in Oman

  • M. van WykEmail author
  • A. O. Al-Adawi
  • B. D. Wingfield
  • A. M. Al-Subhi
  • M. L. Deadman
  • M. J. Wingfield
Short Research Notes

Abstract.

A serious mango decline disease has recently been reported from the Sultanate of Oman. Based on morphological characteristics, the pathogen responsible for the disease was previously identified as Ceratocystis fimbriata. C. fimbriata is one of the most important pathogens of mango in Brazil and its appearance in Oman is of great concern. Recent phylogenetic studies have shown that C. fimbriata most likely represents a species complex. The aim of this study was to confirm the identity of the mango pathogen in Oman based on DNA sequences. Sequence data were obtained for the internal transcribed spacer 1 and 2 regions and the 5.8S rRNA gene regions and these were compared with sequence data of C. fimbriata from several hosts and geographic areas. The isolates from Oman where shown to represent C. fimbriata sensu lato and also to be most closely related to an isolate from mango in Brazil. This provides some evidence that the mango pathogen in Oman might have originated in Brazil.

Keywords

Internal Transcribe Spacer Oman Australasian Plant Pathology Mango Tree Wilt Pathogen 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Australasian Plant Pathology Society 2005

Authors and Affiliations

  • M. van Wyk
    • 1
    Email author
  • A. O. Al-Adawi
    • 2
  • B. D. Wingfield
    • 1
  • A. M. Al-Subhi
    • 3
  • M. L. Deadman
    • 3
  • M. J. Wingfield
    • 1
  1. 1.Department of Genetics, Forestry and Agricultural Biotechnology InstituteUniversity of PretoriaPretoriaSouth Africa
  2. 2.Ghadafan Agriculture Research StationMinistry of Agriculture and FisheriesSoharSultanate of Oman
  3. 3.Department of Crop Sciences, Collage of Agricultural and Marine SciencesSultan Qaboos UniversityAl-KhodSultanate of Oman

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