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

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Miles, A. K., Tan, Y. P., Shivas, R. G. and Drenth, A. (2015) Novel Pathotypes of Elsinoe australis Associated with Citrus australasica and Simmondsia chinensis in Australia. Tropical Plant Pathology, 40 (1). pp. 26-34.

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Article Link: http://dx.doi.org/10.1007/s40858-015-0005-0


Molecular phylogenetic analysis, morphology and pathogenicity to citrus fruit were used to study two isolates of Elsinoe 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. x 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.

Item Type:Article
Business groups:Biosecurity Queensland
Additional Information:Miles, Andrew K. Tan, Yu Pei Shivas, Roger G. Drenth, Andre Horticulture Australia Limited; Australian Government; University of Queensland; Queensland Department of Agriculture, Fisheries and Forestry 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. 0 SPRINGER NEW YORK TROP PLANT PATHOL
Subjects:Plant culture > Fruit and fruit culture
Plant pests and diseases > Plant pathology
Live Archive:13 Jul 2015 02:09
Last Modified:03 Sep 2021 16:50

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