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Tropical Plant Pathology

, Volume 40, Issue 1, pp 26–34 | Cite as

Novel Pathotypes of Elsinoë australis Associated with Citrus australasica and Simmondsia chinensis in Australia

  • Andrew K. Miles
  • Yu Pei Tan
  • Roger G. Shivas
  • André Drenth
Article

Abstract

Molecular phylogenetic analysis, morphology and pathogenicity to citrus fruit were used to study two isolates of Elsinoë australis associated with scab-like symptoms on a fruit of Citrus australasica (finger lime) and Simmondsia chinensis (jojoba) in Australia. In addition to being associated with finger lime, the isolate from finger lime could cause scab symptoms on C. × aurantium cv. Murcott tangor in pathogenicity tests, but could not cause scab symptoms on the other orange, mandarin, lemon or grapefruit tested. Pathogenicity tests also support previous studies showing the isolate from jojoba could not produce symptoms on fruit of C. natsudaidai. Based on the findings of this study, two novel pathotypes of E. australis are designated from Australia; namely the Finger Lime (FL) pathotype associated with finger lime, and the Jojoba Black Scab (JBS) pathotype associated with black scab of jojoba. The significance of these novel E. australis pathotypes on market access and biosecurity issues for citrus are briefly discussed.

Keywords

ITS Phylogeny Scab Taxonomy TEF 

Notes

Acknowledgments

This research was partially funded by Horticulture Australia Limited using the citrus industry levy and matched funds from the Australian Government, and The University of Queensland, and the Queensland Department of Agriculture, Fisheries and Forestry. We wish to thank Dr. Mui Keng Tan and Dr. Nerida Donovan (NSW DPI) for providing the ‘jojoba black scab’ isolates. Dr. Jae-Wook Hyun (Rural Development Administration, National Institute of Horticultural & Herbal Science, Korea) for providing isolates of E. australis and E. fawcettii. Dr. Graeme Sanderson (NSW DPI) for providing the shoots of C. natsudaidai. Dr. Nerida Donovan (NSW DPI), Sylvia Jelinek (NSW DPI) and Tim Hermann (AusCitrus) for supplying various host plants. Dr. Jay Anderson (formerly DAFF Qld), Dr. Dean Beasley (DAFF Qld) and Cecilia O’Dwyer (UQ) for technical assistance, and Pat Barkley for advice on the manuscript.

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Copyright information

© Sociedade Brasileira de Fitopatologia 2015

Authors and Affiliations

  • Andrew K. Miles
    • 1
    • 4
  • Yu Pei Tan
    • 2
  • Roger G. Shivas
    • 2
  • André Drenth
    • 3
  1. 1.Formerly Department of Agriculture Fisheries and ForestryAgri-Science QueenslandDutton ParkAustralia
  2. 2.Department of Agriculture Fisheries and ForestryPlant Pathology Herbarium, Biosecurity QueenslandDutton ParkAustralia
  3. 3.The University of Queensland, Centre for Plant ScienceDutton ParkAustralia
  4. 4.Research and Development for Primary Industries Pty LtdIndooroopillyAustralia

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