The Plant Pathogenic Corynebacteria

Vidaver, Anne K.

doi:10.1146/annurev.mi.36.100182.002431

Cited by 76 publications

(52 citation statements)

References 78 publications

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“…In the past, attempts to correlate plasmids to virulence in the genus Clavibacter have failed (5,17,18,30); therefore, it was possibly a coincidence that this was the case in strain NCPPB382, which we decided to use in our work. There are pathogenic strains of C. michiganensis subsp.…”

Section: Resultsmentioning

confidence: 99%

Evidence for plasmid-encoded virulence factors in the phytopathogenic bacterium Clavibacter michiganensis subsp. michiganensis NCPPB382

et al. 1993

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The tomato pathogen Clavibacter michiganensis subsp. michiganensis NCPPB382, which causes bacterial wilt, harbors two plasmids pCM1 (27.5 kb) and pCM2 (72 kb). After curing of the plasmids, bacterial derivatives were still proficient in the ability to colonize the host plant and in the production of exopolysaccharides but exhibited a reduced virulence. When one of the two plasmids is lost, there is a significant delay in the development of wilting symptoms after infection and a plasmid-free derivative is not able to induce disease symptoms. By cloning of restriction fragments of both plasmids in the plasmid-free strain CMM100, two DNA fragments which restored the virulent phenotype were identified. Further analysis suggested that a fragment of plasmid pCM1 encodes an endocellulase which is involved in the expression of the pathogenic phenotype.

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Section: Resultsmentioning

confidence: 99%

Evidence for plasmid-encoded virulence factors in the phytopathogenic bacterium Clavibacter michiganensis subsp. michiganensis NCPPB382

et al. 1993

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“…In addition, Clavibacter rathayi, Clavibacter tritici, Clavibacter iranicus, and "Corynebacteriurn sp." strains were isolated only from cereal plants (Table 1) (7, 24,40,48). Thus, the phenotypic and genetic differences, as well as the peculiarities of ecology, of these Clavibacter spp.…”

Section: Resultsmentioning

confidence: 99%

“…strains are similar to R. iranicus in cell wall sugar composition (glucose, mannose, and rhamnose) (Table 2) but are clearly differentiated from R. iranicus, R. rathayi, and R. tritici by their morphology (shorter rods [0.4 to 0.6 by 0.5 to 1.6 pm]), nutrient requirements, time needed to reach the stationary growth phase (4 and 2 days, respectively), physiological properties, absence of plasmids (52), host specificity (Table l), and the predominant symptoms of diseases (8, 38,40,48). A phenotypic similarity analysis (53) showed that R. rathayi, R. tritici, R. iranicus, and the Rathayibacter sp.…”

Section: Resultsmentioning

confidence: 99%

Rathayibacter gen. nov., Including the Species Rathayibacter rathayi comb. nov., Rathayibacter tritici comb. nov., Rathayibacter iranicus comb. nov., and Six Strains from Annual Grasses

Zgurskaya¹,

Evtushenko²,

Акимов³

et al. 1993

International Journal of Systematic Bacteriology

125

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A new genus, Ruthuyibucter, is proposed to accommodate three species of gram-positive, aerobic, coryneform bacteria previously placed in the genus Clavibucter (Ruthuyibucter ruthuyi comb. nov., Ruthuyibucter tritici comb. nov., and Ruthuyibucter irunicus comb. nov.), as well as six strains that were isolated from annual cereal grasses, may be responsible for ryegrass toxicity, and are very similar to the recently described organism Chvibacter toxicus sp. nov. (I. T. Riley and K. M. Ophel, Int. J. Syst. Bacteriol. 42:64-68, 1992). The properties of members of the genus Ruthuyibacter include coryneform morphology, peptidoglycan based on 2,4-diaminobutyric acid (type B2y), predominant menaquinones of the MK-10 type, and phosphatidylglycerol and diphosphatidylglycerol as basic polar lipids. The DNA base compositions range from 63 to 72 mol% G+C. The members of the new genus form a phenetic cluster distinct from Clavibucter spp. at a level of 71% (simple matching coefficient) and exhibit 7 to 9% DNA-DNA reassociation with strains of Chvibucter spp. In contrast to Clavibacter spp., most Ruthuyibucter strains are associated with nematodes belonging to the genus Anguina, The Ruthayibucter species differ from species belonging to related genera (e.g., Chvibucter and Agromyces species) in the following characteristics: menaquinone and whole-cell sugar compositions, results of lysozymesodium dodecyl sulfate test (which indicates differences in cell wall composition), ability to utilize a number carbon sources, resistance to bacteriocins of some Chvibucter spp., and other characteristics. The Ruthayibucter species can be differentiated from each other by following characteristics: presence or absence of xylose and galactose in the cell walls, fatty acid composition, ability to assimilate various sources of carbon and nitrogen, hydrolytic activity, tolerance to 5% NaCl and 0.03% potassium tellurite, susceptibility to iranicin, and absence or presence of plasmids of certain sizes. The type species of the genus Ruthuyibucter is R. ruthuyi. The type strains of the species are R. ruthuyi VKM Ac-1601 (= ICMP 2574), R. irunicus VKM Ac-1602 (= ICMP 3496), and R. tritici VKM Ac-1603 (= ICMP 2626).

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“…R Anguina funesta was considered synonymous with Anguina agrostis by some authors (Stynes & Bird, 1980). & Vidaver, 1982). Rathayibacter toxicus (referred to in earlier publications as Corynebacterium sp., Corynebacterium rathayi, annual raygrass toxicity bacteria or ' ARGT ' bacteria) can produce a neurotoxin that can be fatal to grazing animals (Bird, 1981 ;Vogel et al, 1982 ;Jago et al, 1983 ;McKay & Ophel, 1993 ;Ophel et al, 1993).…”

Section: Nematode Associated ‡ No Datamentioning

confidence: 99%

“…Rathayibacter spp. cause gumming diseases, usually characterized by yellow bacterial slime on seedheads, stems and leaves of the plant host (Sabet, 1954 ;Gupta & Swarup, 1972 ;Vidaver, 1982 ;Carlson Cell-wall sugar :…”

mentioning

confidence: 99%

Rathayibacter caricis sp. nov. and Rathayibacter festucae sp. nov., isolated from the phyllosphere of Carex sp. and the leaf gall induced by the nematode Anguina graminis on Festuca rubra L., respectively.

Dorofeeva

Evtushenko

Krausova

et al. 2002

International Journal of Systematic and Evolutionary Microbiology

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The Plant Pathogenic Corynebacteria

Cited by 76 publications

References 78 publications

Evidence for plasmid-encoded virulence factors in the phytopathogenic bacterium Clavibacter michiganensis subsp. michiganensis NCPPB382

Evidence for plasmid-encoded virulence factors in the phytopathogenic bacterium Clavibacter michiganensis subsp. michiganensis NCPPB382

Rathayibacter gen. nov., Including the Species Rathayibacter rathayi comb. nov., Rathayibacter tritici comb. nov., Rathayibacter iranicus comb. nov., and Six Strains from Annual Grasses

Rathayibacter caricis sp. nov. and Rathayibacter festucae sp. nov., isolated from the phyllosphere of Carex sp. and the leaf gall induced by the nematode Anguina graminis on Festuca rubra L., respectively.

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