Characteristics of South African Strains of Pseudomonas solanacearum

Swanepoel, Anita E.; Young, B. W.

doi:10.1094/pd-72-0403

Cited by 11 publications

(4 citation statements)

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“…We believe that the validity of this inoculation procedure (mixed cultures of bacterial strains) for breeding programs is increased by using representative strains of the pathogen in term of host range (race classification) and biochemical characteristics (biovar classification). This strategy is consistent with other eggplant (Goth et al, 1986;Li et al, 1988) and potato (Swanepoel and Young, 1988) breeding programs. P solanacearum strains originating from the French West Indies appear to be highly pathogenic compared with strains from other countries (Prior et al, 1989b) …”

Section: Discussionsupporting

confidence: 87%

A new source of resistance to bacterial wilt of eggplants obtained from a cross: Solanum aethiopicum L × Solanum melongena L

et al. 1991

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Section: Discussionsupporting

confidence: 87%

A new source of resistance to bacterial wilt of eggplants obtained from a cross: Solanum aethiopicum L × Solanum melongena L

et al. 1991

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“…By comparison, the identification of 10 distinct PFG types within field populations of race 3 biovar II isolates in one growing season and a further 27 from 39 reference isolates of worldwide origin represents a significant advance in our appreciation of the genetic diversity within race 3 biovar II. The recovery of a biovar N2 isolate (IMI360288) is also of interest, since the majority of biovar N2 isolates have been isolated from South America, with a few exceptions (32).…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of Burkholderia solanacearum (synonym Pseudomonas solanacearum) race 3 in Kenya

Smith

Offord

Holderness

et al. 1995

Appl Environ Microbiol

106

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Genetic diversity among isolates of the bacterial plant pathogen Burkholderia solanacearum (synonym Pseudomonas solanacearum) race 3 biovar II of Kenya was determined by PCR with repetitive sequences (ERIC and BOX repetitive primer sets) and pulsed-field gel electrophoresis of genomic DNA digested by rare-cutting restriction endonucleases (RC-PFGE). The study comprised 46 isolates collected during 1992 from the major potato-growing regions of Kenya (45 were identified as race 3 biovar II, and 1 belonged to race 3 biovar N2) and 39 reference isolates from 19 other countries. RC-PFGE identified 10 distinct profile types among the Kenyan race 3 biovar II isolates (29 of the isolates exhibited identical profiles) and a further 27 distinct profile types among the reference isolates. ERIC and BOX primer sets were unable to differentiate race 3 biovar II isolates within the Kenyan population but differentiated a further two distinct profile types among the reference isolates. The race 3 biovar N2 isolate had a highly distinct RC-PFGE and repetitive sequence PCR profile. Statistical analysis of the data identified biogeographic trends consistent with conclusions drawn from previous studies on the origin and worldwide dissemination of race 3 biovar II isolates; however, genomic fingerprinting by RC-PFGE revealed a level of genetic diversity previously unrealized.

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“…This aspect has received surprisingly little attention. In South Africa, potato is infected mainly by race 3 and tomato (with few exceptions) by race 1 (Swanepoel & Young, 1988). Apart from a recent publication by Singh (1994) for race 1, there is only proof by artificial inoculation (Devi & Menon, 1980;Shakya, 1993).…”

mentioning

confidence: 99%

“…If seed transmission occurs or soil of planting beds is contaminated, transplants would be the main vehicle for spread (Gitaitis et al, 1992;McCarter & Ratcliffe, 1977). In South Africa, potato is infected mainly by race 3 and tomato (with few exceptions) by race 1 (Swanepoel & Young, 1988). Almost certainly infected potato (or tomato) material has been the main vehicle for distribution of race 3 all over the world, especially to remote areas such as southern Argentina (French, 1986), Australia and Sweden (Olsson, 1976a).…”

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confidence: 99%

Potato brown rot in western Europe – history, present occurrence and some remarks on possible origin, epidemiology and control strategies

Janse

1996

EPPO Bulletin

126

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Since 1992 an increased number of outbreaks of potato brown rot, caused by the bacterium Ralstonia (Burkholderia, Pseudomonas) solanacearum race 3, biovar 2, has been reported in several EPPO member countries, including more northern states like Belgium, France, The Netherlands and the UK. The largest outbreak took place in The Netherlands in 1995, mainly through one heavily infected seed‐tuber line. The bacterium was found in most infested countries in surface water and in the weed Solanum dulcamara growing along waterways. In some countries, tomato was also found to be infected. The history of the so‐called‘low‐temperature’race 3, adapted to more temperate climates (also occurring at higher altitudes in the tropics) is described, together with details on its host range and geographical distribution. Possible origins of the disease in western Europe are discussed, including introduction through import of infected early ware or industrial potatoes from some countries in the Mediterranean area, where the disease is established. The brown rot bacterium has many similarities concerning its biology and epidemiology with some other infectious diseases, e.g. with cholera, and useful comparisons can be made for control strategies. A detailed account on the epidemiology of P. solanacearum and possible prevention and control strategies is presented. These strategies are: (1) responsibility for prevention and control is for the country where the disease occurs; (2) countries where the disease occurs should report outbreaks as soon as possible; (3) early and sure detection and diagnosis of the pathogen are the core of the system; (4) adequate prevention and control measures should be taken after an outbreak; (5) production of healthy seed tubers should be guaranteed and surveys and (laboratory) checks for (latent) infections performed; (6) education of scientific personnel and the public (farmers, traders, advisory service, etc.) is essential. It is foreseen that hygienic measures and avoidance of surface water for irrigation will be key factors in successful control of the disease.

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Characteristics of South African Strains of Pseudomonas solanacearum

Cited by 11 publications

References 0 publications

A new source of resistance to bacterial wilt of eggplants obtained from a cross: Solanum aethiopicum L × Solanum melongena L

A new source of resistance to bacterial wilt of eggplants obtained from a cross: Solanum aethiopicum L × Solanum melongena L

Genetic diversity of Burkholderia solanacearum (synonym Pseudomonas solanacearum) race 3 in Kenya

Potato brown rot in western Europe – history, present occurrence and some remarks on possible origin, epidemiology and control strategies

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