Expression of Erwinia amylovora hrp genes in response to environmental stimuli
نویسندگان
چکیده
منابع مشابه
Erwinia amylovora Expresses Fast and Simultaneously hrp/dsp Virulence Genes during Flower Infection on Apple Trees
BACKGROUND Pathogen entry through host blossoms is the predominant infection pathway of the gram-negative bacterium Erwinia amylovora leading to manifestation of the disease fire blight. Like in other economically important plant pathogens, E. amylovora pathogenicity depends on a type III secretion system encoded by hrp genes. However, timing and transcriptional order of hrp gene expression dur...
متن کاملBacteriophages of Erwinia amylovora.
Fifty bacteriophage isolates of Erwinia amylovora, the causal agent of fire blight, were collected from sites in and around the Niagara region of southern Ontario and the Royal Botanical Gardens, Hamilton, Ontario. Forty-two phages survived the isolation, purification, and storage processes. The majority of the phages in the collection were isolated from the soil surrounding trees exhibiting fi...
متن کاملPhenotypic diversity of Erwinia amylovora in Bulgaria.
Fifty-one strains of Erwinia amylovora isolated from nine host plants in Bulgaria were characterized phenotypically and identified by the API 20E and BIOLOG system. The identification was confirmed by PCR amplification of a specific region of the plasmid pEA29 and the genome ams region. The phenotypic diversity of the strains was studied on the basis of their API 20E and BIOLOG metabolic profil...
متن کاملIntermediary metabolism of carbohydrate by Erwinia amylovora.
Erwinia amylovora ferments glucose to yield mainly ethanol, lactate, and carbon dioxide (Sutton and Starr, 1959). The initial steps in the o.xidation of glucose by this bacterium were reported by Katznelson (1955), who later (Katznelson, 1958) showed the presence of certain key enzymes of the Embden-Meyerhof pathway in sonic extracts. The present study, briefly summarized elsewhere (Sutton and ...
متن کاملVirulence Factors of Erwinia amylovora: A Review
Erwinia amylovora, a Gram negative bacteria of the Enterobacteriaceae family, is the causal agent of fire blight, a devastating plant disease affecting a wide range of host species within Rosaceae and a major global threat to commercial apple and pear production. Among the limited number of control options currently available, prophylactic application of antibiotics during the bloom period appe...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1992
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.174.6.1875-1882.1992