Detection of a new pathotype of Elsinoe australis causing black scab of jojoba in New South Wales and Queensland

 

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Publication Date

Fri, 23 Jun 2023, 05:51

Last Updated

June 23, 2023, 5:51 a.m.

Report Number

AUS-48/2

Country

Australia

Pest Id

Elsinoe australis - (ELSIAU)

Report Status

Preliminary

Hosts

Jojoba (Simmondsia chinensis)

Pest Status (old values from ISPM 8 -1998 )

• Present: only in some areas

Pest Status (ISPM 8 - 2021)

• Present: not widely distributed and under official control

Geographical Distribution

New South Wales and Queensland

Summary

In 2005, a black scab of jojoba was seen in jojoba plantations in New South Wales and Queensland. Black scab lesions were detected on leaves and stems.

Identification of the cause was undertaken and it has been determined that it is a new distinct pathotype, separate from other Elsinoe species found in Australia.Further work is ongoing to define host range and pathogenicity.

Danger

A new pathotype of E. australis has been detected on jojoba. It has not been found on sweet oranges in Australia.

Contact for info

Australian Chief Plant Protection Officer Australian Government Department of Agriculture, GPO Box 858 Canberra ACT 2601 Australia [email protected]

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