Ralstonia solanacearum(RALSSL)
Distribution details in Portugal
Current pest situation evaluated by EPPO on the basis of information dated
2017: Present, few occurrences
Pest status declared by NPPO: Present, under eradication, only in some parts of the Member State concerned (2019-04)
Pest status declared by NPPO: Present, under eradication, only in some parts of the Member State concerned (2019-04)
Under official control.
The bacterium was found in potato fields in the 1940s and early 1950s and successfully eradicated.
EPPO Reporting Service (1996/22) : new outbreak found in April/May 1995 in the centre-coastal region. Source was probably infected seed potatoes imported from Netherlands. Under eradication.
EPPO Reporting Service (1997/111) : measures maintained in outbreak area. Only one field found infested in 1996.
NPPO (2019): found in one ware potato field in Centro region in the framework of annual official survey. Under eradication.
The bacterium was found in potato fields in the 1940s and early 1950s and successfully eradicated.
EPPO Reporting Service (1996/22) : new outbreak found in April/May 1995 in the centre-coastal region. Source was probably infected seed potatoes imported from Netherlands. Under eradication.
EPPO Reporting Service (1997/111) : measures maintained in outbreak area. Only one field found infested in 1996.
NPPO (2019): found in one ware potato field in Centro region in the framework of annual official survey. Under eradication.
* Cellier G, Remenant B, Chiroleu F, Lefeuvre P, Prior P (2012) Phylogeny and population structure of brown rot- and mokodisease-causing strains of Ralstonia solanacearum Phylotype II. Applied and Environmental Microbiology 78, 2367-237.
------- Reference isolates (CFBP3784, CFBP3785 and CFBP4787) obtained from potato in 1995 were confirmed as R. solanacearum [phylotype IIB-1].
* Cruz L, Eloy M, Quirino F, Carrinho H (2008) Ralstonia solanacearum biovar 1 associated with a new outbreak of potato brown rot in Portugal. Phytopathologia Mediterranea 47, 87-91
------- Between 1999 and 2006 all isolates of R. solanacearum were characterized as belonging to biovar 2A (R. solanacearum [phylotype IIB-1]). In 2007, biovar 1 strains were recorded in potato fields under a confined area in Baixo Mondego (former Lower Mondego sub-region of the Centro region), now the Coimbra district of the Centro region of Portugal.
* Cruz L, Eloy M, Quirino F, Oliveira H, Tenreiro R (2012) Molecular epidemiology of Ralstonia solanacearum strains from plants and environmental sources in Portugal. European Journal of Plant Pathology 133, 687–706.
* Directorate-General for Health and Food Safety (European Commission) (2017) Potato ring rot and brown rot surveys in the EU: Annual report 2016/2017. Luxembourg: Publications Office of the European Union. 36 pp.
------- In annual surveys from 1996-2016, R. solanacearum [phylotype IIB-1] was detected in 283 lots of ware potato (43 lots in 1996, 1 in 1997, 84 in 1998, 49 in 1999, 20 in 2000, 7 in 2001, 5 in 2002, 6 in 2003, 4 in 2004, 2 in 2005, 10 in 2006, 7in 2007, 1 in 2008, 8 in 2010, 19 in 2011, 1 in 2013, 2 in 2014, 3 in 2015 and 1 in 2016) but not in seed seed potato tested during this period. Only in 2009 and 2012, were there no findings in potato during this period. Official eradication measures were taken. R. solanacearum was detected in 1 of 7 samples of irrigation water in 2015.
* NPPO of Portugal (1996-02, 1997, 2019-04)
------- Reference isolates (CFBP3784, CFBP3785 and CFBP4787) obtained from potato in 1995 were confirmed as R. solanacearum [phylotype IIB-1].
* Cruz L, Eloy M, Quirino F, Carrinho H (2008) Ralstonia solanacearum biovar 1 associated with a new outbreak of potato brown rot in Portugal. Phytopathologia Mediterranea 47, 87-91
------- Between 1999 and 2006 all isolates of R. solanacearum were characterized as belonging to biovar 2A (R. solanacearum [phylotype IIB-1]). In 2007, biovar 1 strains were recorded in potato fields under a confined area in Baixo Mondego (former Lower Mondego sub-region of the Centro region), now the Coimbra district of the Centro region of Portugal.
* Cruz L, Eloy M, Quirino F, Oliveira H, Tenreiro R (2012) Molecular epidemiology of Ralstonia solanacearum strains from plants and environmental sources in Portugal. European Journal of Plant Pathology 133, 687–706.
* Directorate-General for Health and Food Safety (European Commission) (2017) Potato ring rot and brown rot surveys in the EU: Annual report 2016/2017. Luxembourg: Publications Office of the European Union. 36 pp.
------- In annual surveys from 1996-2016, R. solanacearum [phylotype IIB-1] was detected in 283 lots of ware potato (43 lots in 1996, 1 in 1997, 84 in 1998, 49 in 1999, 20 in 2000, 7 in 2001, 5 in 2002, 6 in 2003, 4 in 2004, 2 in 2005, 10 in 2006, 7in 2007, 1 in 2008, 8 in 2010, 19 in 2011, 1 in 2013, 2 in 2014, 3 in 2015 and 1 in 2016) but not in seed seed potato tested during this period. Only in 2009 and 2012, were there no findings in potato during this period. Official eradication measures were taken. R. solanacearum was detected in 1 of 7 samples of irrigation water in 2015.
* NPPO of Portugal (1996-02, 1997, 2019-04)
| Country | State | Status | |
|---|---|---|---|
| Spain | Present, few occurrences | ||
| Spain | Islas Canárias | Absent, pest no longer present |