Characterization of Streptomycetes Causing Russet Scab in Quebec

Faucher, Esther; Otrysko, B.; Paradis, Éric; Hodge, N. C.; Stall, R. E.; Beaulieu, Carole

doi:10.1094/pd-77-1217

Cited by 42 publications

(15 citation statements)

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“…To confirm this possibility, we will quantitatively analyze FD-891 content during the course of the development of symptoms and attempt to reproduce the symptoms by applying FD-891 on growing potato tubers. Faucher et al (1993) found a high similarity in taxonomic characteristics between the russet scab-inducing organisms in Canada and members of the cluster S. aureofaciens. Finnish netted scab pathogen was also classified as S. aureofaciens (Kreuze et al 1999).…”

Section: Discussionmentioning

confidence: 84%

Phytotoxin produced by Streptomyces sp. causing potato russet scab in Japan

et al. 2005

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Section: Discussionmentioning

confidence: 84%

Phytotoxin produced by Streptomyces sp. causing potato russet scab in Japan

et al. 2005

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“…The netted scab pathogen S. reticuliscabiei is genetically very closely related to another species causing CS, S. turgidiscabies (Bouchek-Mechiche et al 2006). A netted scab-like disease referred to as russet scab has also been described in North America (Faucher et al 1993;Harrison 1962).…”

Section: Introductionmentioning

confidence: 99%

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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“…Such Actinobacteria gain opportunistic entry into the plant system through wounds, while few others are considered as typical plant pathogens. Actinobacteria belonging to families Microbacteriaceae (Clavibacter, Curtobacterium and Leifsonia) and family Nocardiaceae ( Rhodococcus fascians) are known to cause various plant pathogenic symptoms viz., galls, fasciation, gummosis, stunting and wilt in several vascular plants (Harrison 1962;Faucher et al 1993;Bouchek-Mechiche et al 2000;Agbessi et al 2003). The most popular of the Actinobacterial diseases is "scab" caused by members of the genus Streptomyces.…”

Section: Actinobacteria As Plant Pathogensmentioning

confidence: 99%