EPPO Global Database

Ralstonia syzygii(RALSSY)

Distribution details in Australia

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2022: Absent, pest no longer present
Pest status declared by NPPO: Absent: pest no longer present; Absent: pest records invalid (2022-02)
Comments
Wicker et al. (2012): The aberrant biovar 2 strain (ACH0732) isolated from tomato in the Northern Territory of Australia in 1979 was identified as R. syzygii subsp. indonesiensis [phylotype IV sequevar 11].
Plant Health Australia Ltd (2021): No further report of R. syzygii subsp. indonesiensis was found since then.
References
* IPPC website. Official Pest Reports – Australia (AUS-107/1 of 2022-02/24) Absence of Ralstonia syzygii subsp. indonesiensis from Australia. https://www.ippc.int/fr/countries/australia/pestreports/2022/02/absence-of-ralstonia-syzygii-subsp-indonesiensis-from-australia/

* Plant Health Australia Ltd (2021) Biosecurity plan for the potato industry (version 3.2, 2021). Plant health Australia, Canberra, ACT. 166 pp
------- R. solanacearum phylotype IV has not been isolated since the finding on tomato in Darwin in 1979.

* Wicker E, Lefeuvre P, de Cambiaire JC, Lemaire C, Poussier S, Prior P (2012) Contrasting recombination patterns and demographic histories of the plant pathogen Ralstonia solanacearum inferred from MLSA. The ISME Journal 6, 961–974 (2012). https://doi.org/10.1038/ismej.2011.160
------- Australia/Indonesia is considered as the origin of Phylotype IV.