Taxonomie studies on streptomycetes causing potato common scab: a review

Goyer, Claudia; Otrysko, B.; Beaulieu, Carole

doi:10.1080/07060669609500633

Cited by 41 publications

(28 citation statements)

References 37 publications

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“…S. acidiscabies, a species tolerant of acidic soil conditions, has also been described from the northeastern US and Canada (Faucher et al 1992;Lambert and Loria 1989;Lambert et al 2006). At least three, and perhaps as many as 10, CS-causing Streptomyces species or strains have now been delineated in North America (Goyer et al 1996;St-Onge et al 2008;Wanner 2009). All of these species or strains cause a similar spectrum of CS symptoms on potatoes.…”

Section: Introductionmentioning

confidence: 95%

Aggressiveness of Streptomyces on Four Potato Cultivars and Implications for Common Scab Resistance Breeding

Wanner

Haynes

2009

Am. J. Pot Res

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Common scab (CS), caused by several species of Streptomyces, is a serious problem for potato growers. Although the mechanism of pathogenicity, based on the phytotoxin thaxtomin, is presumably conserved in all pathogenic species, Streptomyces isolates vary in aggressiveness, and regional patterns in Streptomyces species distribution have recently emerged. We demonstrate that Streptomyces isolates differ significantly in aggressiveness, and there are specific plant genotype-pathogen isolate interactions in four contrasting potato cultivars treated with Streptomyces isolates belonging to different species and molecular types. There were significant differences between experiments, among isolates, among cultivars, and some of the two-way interactions were significant. The sum of all main and interaction effects among plant, pathogen, and experiment accounted for only 50-55% of total variation in CS disease symptoms. More information on specific plantpathogen interactions combined with knowledge of the distribution of CS-causing species could form the basis for successful recommendations of suitable potato cultivars, and will contribute to more accurate and reproducible phenotyping required for genetic studies of CS resistance in potato.Resumen La roña común (CS), causada por varias especies de Streptomyces, es un problema grave para los cultivadores de papa. Aunque el mecanismo de patogenicidad, basado en la fitotoxina taxtomina, se conserva presumiblemente en todas las especies patógenas, los aislamientos de Streptomyces varían en agresividad, y han surgido recientemente patrones regionales en la distribución de las especies de Streptomyces. Demostramos que los aislamientos de Streptomyces difieren en agresividad de forma significativa, y hay interacciones especificas entre genotipo de planta-aislamiento del patógeno en cuatro diferentes cultivares de papa tratadas con aislamientos de Streptomyces pertenecientes a diferentes especies y tipos moleculares. Hubo diferencias significativas entre experimentos, entre aislamientos, entre cultivares, y algunas de las interacciones de dos vías fueron significativas. La suma de todos los efectos principales y de interacción entre plantas, patógenos, y experimentos representaron sólo el 50-55% del total de la variación en los síntomas de la enfermedad CS. Más información sobre las interacciones planta-patógeno especificas combinado con el conocimiento de la distribución de las especies que causan CS podría constituir la base para recomendaciones exitosas de cultivares adecuados de papa, y contribuirá a la más exacta y reproducible fenotipificación necesaria para los estudios genéticos de resistencia a CS en la papa.Keywords Plant-pathogen-disease triangle . Resistance breedingAbbreviations CS common scab MA mean area tAI transformed mean area ML mean lesion PAI pathogenicity island Am.

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Section: Introductionmentioning

confidence: 95%

Aggressiveness of Streptomyces on Four Potato Cultivars and Implications for Common Scab Resistance Breeding

Wanner

Haynes

2009

Am. J. Pot Res

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“…Streptomyces scabies) is the main causal agent of common scab, a widely-distributed disease that causes important economic losses in potato production (Lambert and Loria, 1989;Goyer et al, 1996). Common scab symptoms consist of superficial to deep corky lesions on the tubers.…”

Section: Introductionmentioning

confidence: 99%

Effect of chitosan and a biocontrol streptomycete on field and potato tuber bacterial communities

et al. 2006

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Four treatments applied on potato seed tubers i.e. talc only, chitosan only, Streptomyces melanosporofaciens strain EF-76 in talc and S. melanosporofaciens strain EF-76 in chitosan were compared for their efficiency to reduce common scab incidence. As previously reported the joint application of the geldanamycin-producing S. melanosporofaciens strain EF-76 and chitosan was effective to control common scab of potato. Nevertheless, field application of S. melanosporofaciens EF-76 did not allow the selection of geldanamycin-resistant actinomycetes (GRA) in the bulk soil during the potato growing season. The number of GRA on harvested potato tubers was, however, significantly higher in treatments that contained chitosan than in other treatments suggesting that chitosan might promote the establishment of the antagonistic actinomycete on progeny tubers. Biolog EcoPlates were used to determine the metabolic profiles of the bacterial soil communities. A permutation MANOVA analysis detected significant differences within the metabolic profiles of the bacterial communities at the potato flowering period but not at the beginning of the season or a week before harvest. A combination of S. melanosporofaciens EF-76 and chitosan thus represents a promising tool against common scab, with low short-term impact on soil bacterial communities.

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“…Unique species have been described from Korea (Park et al 2003a, b). In North America, three distinct groups or species have been differentiated in eastern Canada (Goyer et al 1996), and four species of scab-causing Streptomyces were found from nine locations in six US states (Wanner 2006). A new group of scab-causing Streptomyces was identified in Idaho (Wanner 2007b), suggesting that greater species diversity may exist.…”

Section: Introductionmentioning

confidence: 99%

A Patchwork of Streptomyces Species Isolated from Potato Common Scab Lesions in North America

Wanner

2009

Am. J. Pot Res

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To determine distribution and prevalence of Streptomyces species associated with common scab in North America, more than 1,400 isolates were made from scabby potato tubers. Samples were obtained from locations across the continent, and from multiple sites in close geographic proximity. Most potentially pathogenic isolates belonged to four species previously associated with common scab, S. scabies, S. europaeiscabiei, S. stelliscabiei, and S. sp. IdahoX. Additionally, small numbers of potentially pathogenic isolates were identified as S. acidiscabies, S. turgidiscabies and six additional ribotypes. S. europaeiscabiei was most common in the west and S. scabies predominated in the middle and eastern Midwest. Beyond this geographic trend, species distribution was patchy. A single species often predominated in a field while neighboring fields had different species. Local and regional variation was seen when isolates were genotyped for repetitive sequence element patterns, reflecting the conserved or core genome, and genes characteristic of the Streptomyces pathogenicity island, reflecting flexible components of the Streptomyces genome. This is the largest survey to date of the distribution of common scab-causing species, and will be a resource for population biology studies and for tracing the evolutionary history and spread of common scabassociated Streptomyces.Resumen Para determinar la distribución y prevalencia de especies de Streptomyces asociadas con la sarna común en Norteamérica, se hicieron más de 1,400 aislamientos de tubérculos de papa con sarna. Las muestras fueron obtenidas de localidades de todo el continente y de múltiples lugares geográficamente próximos. Los aislamientos potencialmente más patogénicos fueron de cuatro especies previamente asociadas con sarna común, S. scabies, S. europaeiscabiei, S. stellicabiei y S. sp. IdahoX. Adicionalmente, un número pequeño de aislamientos potencialmente patogénicos fueron identificados como S. acidiscabies, S. turgidiscabies y seis ribotipos adicionales. S. europaeiscabiei fue el más común en el oeste y S. scabies predominó en el centro y este del Medio Oeste. Más allá de esta tendencia geográfica, la distribución de especies fue en parches. Una sola especie a menudo predominó en un campo mientras en los campos vecinos se encontraron diferentes especies. Se vieron variaciones locales y regionales cuando a los aislamientos se les determinó el genotipo para patrones de elementos con secuencias repetitivas que reflejan el genoma conservado o central, y genes característicos de la isla de patogenicidad de Streptomyces, reflejando componentes flexibles del genoma de Streptomyces. Este es la pesquisa más extensa a la fecha sobre la distribución de las especies que causan sarna común, y será un recurso para estudios de biología poblacional y para determinar la historia evolutiva y diseminación de Streptomyces asociado a la sarna común.Keywords Streptomyces scabies . Population genetics . Pathogenicity island Abbreviations CSCommon scab PAI Pathogenicity islan...

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Taxonomie studies on streptomycetes causing potato common scab: a review

Cited by 41 publications

References 37 publications

Aggressiveness of Streptomyces on Four Potato Cultivars and Implications for Common Scab Resistance Breeding

Aggressiveness of Streptomyces on Four Potato Cultivars and Implications for Common Scab Resistance Breeding

Effect of chitosan and a biocontrol streptomycete on field and potato tuber bacterial communities

A Patchwork of Streptomyces Species Isolated from Potato Common Scab Lesions in North America

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