Interaction of Pseudomonas syringae and Freezing in Bacterial Canker on Excised Peach Twigs

Weaver, D. J.

doi:10.1094/phyto-68-1460

Cited by 41 publications

(36 citation statements)

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“…persicae) in the development of bacterial canker in excised peach twigs. Veaver (1978) provide direct evidence that development of bacterial canker in peach twigs is associated with below-freezing temperatures that follows mild periods during winter. A freezing-thawing cycle created a water-soaked condition in the bark of shoots of peach and apricot that induced a quick ingress (1 min) and a noticeable spread (15-35 mm) of bacterial and dyes in tissues.…”

Section: Reduced Risk Of Damage Of Stone Fruit Trees By Ice Nucleatiomentioning

confidence: 81%

Potential impact of climate change on geographic distribution of plant pathogenic bacteria in Central Europe

Kůdela¹

2009

Plant Prot. Sci.

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Abstract:This review provides an overview of variety of bacterial plant pathogens which can serve as an example of how plant pathogenic bacteria can adapt very specifically to anticipated climate change in Central Europe. In the centre of attention are the themes such as: emerging of heat-loving bacteria; changes in the spectrum of pectolytic bacteria; an decrease of the frequency of occurrence of cold tolerant pseudomonads and an increase of more thermophilic xanthomonads; increased risk of xylem-limited bacteria which overwinter in insect vectors; reduced risk of damage of stone fruit trees by ice nucleation active pseudomonads and subsequent winter freeze temperatures. Of plant pathogenic prokaryotes, mollicutes and phloem-limited bacteria are not discussed in this review.

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Section: Reduced Risk Of Damage Of Stone Fruit Trees By Ice Nucleatiomentioning

confidence: 81%

Potential impact of climate change on geographic distribution of plant pathogenic bacteria in Central Europe

Kůdela¹

2009

Plant Prot. Sci.

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“…Frost control by warming the air or the use of overhead sprinklers will prevent frost damage and consequently reduce disease severity (Young, 1987a). Disinfection of tools and materials, in particular pruning tools, may help to prevent the introduction of disease (Weaver, 1978;Canfield et al, 1986). …”

Section: Currently Applied Control Methods In the Eumentioning

confidence: 99%

Scientific Opinion on the pest categorisation ofPseudomonas syringaepv.persicae(Prunier et al.) Young et al.

2014

EFSA Journal

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The European Commission requested the EFSA Panel on Plant Health to perform the pest categorisation for Pseudomonas syringae pv. persicae (P. s. pv. persicae). The agent is responsible for bacterial die-back in peach, nectarine, Japanese plum and, possibly, myrobalan plum. The disease is caused by a genetic clade within genomic species 3 of P. syringae, but there is only limited knowledge of the diversity of the causative agent. The host plants are cultivated throughout Europe, although it is only in southern European countries that the production of peaches and/or nectarines is of economic importance, and the cultivation of Japanese plums is restricted to some parts of southern Europe. Outbreaks are rare and currently the disease occurs only sporadically in Portugal, France and Germany. P. s. pv. persicae causes symptoms on the bark, shoots, leaves and fruit. Detection is based on symptomatology and isolation; no DNA amplification (polymerase chain reaction) protocols are available. The pathogen can be identified on the basis of disease symptoms, including shoot dieback and leaf spots, and on the basis of distinct biochemical and genetic properties. No effective management strategies are available, although disease incidence and severity can be somewhat reduced by disinfection of tools, machines and materials, the use of planting material from disease-free areas, and the avoidance of conditions favouring disease expression. Initial infections may be due to the use of (latently) infected plant material, but infections may also occur from the environment. No effective biological or chemical control agents are registered for bacterial die-back in Europe. The outbreaks, although they occur sporadically, are usually severe and can result in the loss of entire orchards. © European Food Safety Authority, 2014 KEY WORDSPseudomonas syringae pv. persicae, bacterial die-back of peach, bacterial decline of nectarine and peach, bacterial canker of peach, quarantine pest, regulated non-quarantine pest

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“…Les résultats mettent en évidence une variabilité importante liée aux souches et aux méthodes (Gross et al, 1984a; Gaignard, 1987a; Cottin, 1989 (Gardan et al, 1972; Luisetti et Paulin, 1972 (Crosse, 1971; Gaignard, 1992 (Luisetti et al, 1973b Crosse, 1964;Vigouroux, 1970;Luisetti, 1978; Luisetti et al, 1984;Samson et al, 1988; Gaignard, 1989a; Gaignard, 1992 (Vigouroux, 1974;1979; 1991) et par P s pv syringae (Weaver, 1978) et de l'abricotier par P s pv syringae (Klement et al, 1974;Vigouroux, 1989 (1987) et des cellulases. Des souches de P s pv savastanoi induisant la tuberculose de l'olivier et des tumeurs sur le laurier rose produisent in vitro de l'acide indole acétique et des cytokinines (Surico et al, 1975 (Coléno et al, 1982).…”

Section: * Correspondance Et Tirés à Partunclassified

Pseudomonas syringae, bactérie épiphyte, glaçogène et pathogène

Gaignard¹,

Luisetti²

1993

Agronomie

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L'aptitude épiphyte de Pseudomonas syringae s'exprime par une capacité à coloniser la surface des organes aériens des plantes, à s'y multiplier de façon importante. Elle conduit à l'existence de niveaux de population élevés au printemps, et en automne aussi pour les plantes pérennes; ces populations épiphytes constituent un réservoir d'inoculum et sont essentielles pour l'initiation de l'infection. La distribution de ces populations épiphytes, en général abondantes, n'est pas homogène ni entre plantes, ni entre organes d'une même plante ; leur répartition à la surface de la feuille qui constitue leur support essentiel est aussi très hétérogène. La nature de l'interaction entre l'hôte et les bactéries épiphytes n'est pas connue ; l'existence d'un lien entre spécificité parasitaire et la spécificité épiphyte au sein de l'espèce syringae est suspectée. Le pouvoir glaçogène de l'espèce syringae s'exprimant par une capacité à induire une rupture précoce de la surfusion de l'eau ne concerne qu'une fraction de pathovars, essentiellement le pathovar syringae. On a montré qu'il était impliqué dans la gélivité des plantes au printemps (vigne, arbres fruitiers, tomate, pomme de terre...) et qu'il est l'un des facteurs favorisant les premières phases de l'infection bactérienne.Le pouvoir pathogène de Pseudomonas syringae montre une spécificité d'hôte liée au pathovar considéré, sauf pour le pathovar syringae dont la gamme d'hôtes est actuellement contestée par plusieurs auteurs. Le développement de l'infection est conditionné par l'existence de voies de pénétration naturelles (elles sont limitées) ou artificielles (blessures) offertes à l'inoculum ; les conditions climatiques pendant les phases initiales de l'infection et durant l'incubation apparaissent capables de moduler l'intensité de l'infection. La connaissance de l'ensemble de ces données permet une esquisse générale de cycle biologique à partir duquel des stratégies de lutte peuvent être élaborées ; différents exemples sont alors présentés en appui. Diverses perspectives de recherches sur cette espèce bactérienne sont discutées.Pseudomonas syringae / aptitude épiphyte / activité glaçogène / pouvoir pathogène / lutte Summary — Pseudomonas syringae, an epiphytic ice nucleation active and phytopathogenic bacterium. Pseudomonas syringae, one of the 50 phytopathogenic bacterial species, is the most frequently occurring bacterium under temperate climatic conditions. P syringae has been isolated from = 400 different plant hosts (177 hosts for pv syringae) and is characterized by high genetic, physiological and biological variability expressed through 52 pathovars. Three important properties are associated with this species: pathogenicity, ice nucleation activity and ability for epiphytic survival. The general characteristics of P syringae, apart from the genetic aspects, which have not been examined here, are presented in the first part of this review. In the second part, the 3 remarkable properties of the species have been analyzed. Epiphytic survival, expressed by ...

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Interaction of Pseudomonas syringae and Freezing in Bacterial Canker on Excised Peach Twigs

Cited by 41 publications

References 0 publications

Potential impact of climate change on geographic distribution of plant pathogenic bacteria in Central Europe

Potential impact of climate change on geographic distribution of plant pathogenic bacteria in Central Europe

Scientific Opinion on the pest categorisation ofPseudomonas syringaepv.persicae(Prunier et al.) Young et al.

Pseudomonas syringae, bactérie épiphyte, glaçogène et pathogène

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