Ralstonia solanacearum(RALSSL)
Distribution details in Kenya
Current pest situation evaluated by EPPO on the basis of information dated
2023: Present, widespread
On potato, pelargonium.
EPPO Reporting Service (2023/129) : first report on Ipomoea hildebrandtii, a native invasive weed in East Africa.
EPPO Reporting Service (2023/129) : first report on Ipomoea hildebrandtii, a native invasive weed in East Africa.
* Cellier G, Omagwa J, Shem E, Mburu H, Aduwa M, Sekanjako I, Awuor EO, Ireri D, Cortada L. (2023) First report of Ralstonia solanacearum on Ipomoea hildebrandtii in Kenya. New Disease Reports 47(1), e12163. https://doi.org/10.1002/ndr2.12163.
------- on the weed Ipomoea hildebrandtii.
* Chamedjeu RR, Masanga J, Matiru V and Runo S (2018) Isolation and characterization of Ralstonia solanacearum strains causing bacterial wilt of potato in Nakuru County of Kenya. African Journal of Biotechnology 17, 1455-1465 DOI: 10.5897/AJB2018.16659
------- In Kenya, the disease affects 77% of potato farms causing yield losses of up to 100%. Potato farms surveyed in 3 sub-counties in Nakuru county in the Great Rift Valley. Reported identification of all four phylotypes amongst 20 isolates (all biovar 3) requires further investigation.
* Janse JD, van den Beld HE, Elphinstone J, Simpkins S, Tjou-Tam-Sin NNA, van Vaerenbergh J (2004) Introduction to Europe of Ralstonia solanacearum biovar 2 race 3 in Pelargonium zonale cuttings. Journal of Plant Pathology 86, 147-145
------- Isolates from Pelargonium produced in Kenya were biovar 2 (R. solanacearum [phylotype II-1]) although a wider diversitiy of phylotypes were detected in river water (Elphinstone, pers. comm.).
* N'Guessan CA, Brisse S, Le Roux-Nio A-C, Poussier S, Koné D, Wicker E (2013) Development of variable number of tandem repeats typing schemes for Ralstonia solanacearum, the agent of bacterial wilt, banana Moko disease and potato brown rot. Journal of Microbiological Methods 92, 366-374. https://doi.org/10.1016/j.mimet.2013.01.012
------- Isolate from Pelargonium x asperum in Naivasha identified as R. solanacearum [phylotype IIB-1]. Isolates from potato identified as R. solanacearum [phylotype IIA-7] and R. pseudosolanacearum [phylotype III-20].
* Smith JJ, Offord LC, Holderness M, Saddler GS (1995) Genetic diversity of Burkholderia solanacearum (synonym Pseudomonas solanacearum) race 3 in Kenya. Applied and Environmental Microbiology 61 (12), 4263-4268.
------- R. solanacearum [phylotype IIB-1] (identified as race 3 biovar 2) in 45 of 46 potato isolates from major potato growing areas of Kenya.
------- on the weed Ipomoea hildebrandtii.
* Chamedjeu RR, Masanga J, Matiru V and Runo S (2018) Isolation and characterization of Ralstonia solanacearum strains causing bacterial wilt of potato in Nakuru County of Kenya. African Journal of Biotechnology 17, 1455-1465 DOI: 10.5897/AJB2018.16659
------- In Kenya, the disease affects 77% of potato farms causing yield losses of up to 100%. Potato farms surveyed in 3 sub-counties in Nakuru county in the Great Rift Valley. Reported identification of all four phylotypes amongst 20 isolates (all biovar 3) requires further investigation.
* Janse JD, van den Beld HE, Elphinstone J, Simpkins S, Tjou-Tam-Sin NNA, van Vaerenbergh J (2004) Introduction to Europe of Ralstonia solanacearum biovar 2 race 3 in Pelargonium zonale cuttings. Journal of Plant Pathology 86, 147-145
------- Isolates from Pelargonium produced in Kenya were biovar 2 (R. solanacearum [phylotype II-1]) although a wider diversitiy of phylotypes were detected in river water (Elphinstone, pers. comm.).
* N'Guessan CA, Brisse S, Le Roux-Nio A-C, Poussier S, Koné D, Wicker E (2013) Development of variable number of tandem repeats typing schemes for Ralstonia solanacearum, the agent of bacterial wilt, banana Moko disease and potato brown rot. Journal of Microbiological Methods 92, 366-374. https://doi.org/10.1016/j.mimet.2013.01.012
------- Isolate from Pelargonium x asperum in Naivasha identified as R. solanacearum [phylotype IIB-1]. Isolates from potato identified as R. solanacearum [phylotype IIA-7] and R. pseudosolanacearum [phylotype III-20].
* Smith JJ, Offord LC, Holderness M, Saddler GS (1995) Genetic diversity of Burkholderia solanacearum (synonym Pseudomonas solanacearum) race 3 in Kenya. Applied and Environmental Microbiology 61 (12), 4263-4268.
------- R. solanacearum [phylotype IIB-1] (identified as race 3 biovar 2) in 45 of 46 potato isolates from major potato growing areas of Kenya.
| Country | State | Status | |
|---|---|---|---|
| Ethiopia | Present, widespread | ||
| Tanzania | Present, restricted distribution | ||
| Uganda | Present, widespread |