Phytopathogenic bacteria

ISHIGAMI T (1991) Antibacterial activity of tea polyphenols against foodbome, cariogenic and phytopathogenic bacteria , in Proc of Intern Symp on Tea Sci, 26-29 August, 1991, Shizuoka, Japan, 248-52. 

Fom- title compounds, 5-deoxy KDG Me estw, 5-epi KDG Me ester, 4-0-Me KDG Me ester and 4-deoxy KDG Me ester were prepared either from D-glucono-l,5-lactone or from 1,2 5,6 di-O-isopropylidene-D-mannitol. Biological tests perfcHined rat these molecules have shown that the compounds modified on the C-5 position (5-deoxy KDG Me ester and 5-epi KDG Me ester) are gratuitous inducers of the e>q>ression of pectinase genes in the phytopathogenic bacteria Erwinia Chrysanthemi when the C-4 modified molecules (4-0-Me KDG Me ester and 4-deoxy KDG Me ester) are not inducers. 

DeGray, G., Rajusokaran, K., Smith, F., Sanford, J., and Daniell, H. (2001). Expression of an antimicrobial peptide via the chloroplast genome to control phytopathogenic bacteria and fungi. Plant Physiol. 127 852-862. 

Shaw, J. J. and Kado, C. I. 1986. Development of a Vibrio bioluminescence gene-set to monitor phytopathogenic bacteria during the ongoing disease process in a non-disruptive manner. Bio/Technol. 4, 560-564... 

Bedini, E., Parrilli, M., Unverzagt, C. Oligomerization of a rhamnanic trisaccharide repeating unit of O-chain polysaccharides from phytopathogenic bacteria. Tetrahedron Lett 43 (2002) 8879-8882. 

Other putative CKX genes and gene fragments have been found in gene databases of phytopathogenic bacteria, such as Streptomyces spp. [99] causing potato scab, Legionella pneumophila and cyanobacterium Anahaena variabilis (Frebortova, unpublished). 

E. Bedini, A. Carabellese, D. Comegna, C. De Castro, and M. Parrilli, Synthetic oligorhamnans related to the most common O-chain backbone from phytopathogenic bacteria, Tetrahedron, 62 (2006) 8474-8483. 

BIOACTIVE METABOLITES FROM PHYTOPATHOGENIC BACTERIA AND PLANTS... 

Table 1. Plant Growth Regulators from Phytopathogenic Bacteria...

The isolation and structure determination of phytopathogenic bacteria LPS, and in particular that of the corresponding O-chain, have assumed great importance for the probable role of this molecule in the host-pathogen specificity. Furthermore, knowledge of the chemical structure... 

P. savastanoi strain isolated from infected oleander plants (see above), proved to be virulent on both oleander and olive plants, while olive strain was shown to be virulent only on the host plant. The molecular basis of this host-pathogen specificity is poorly understood. Exopolysaccharides (EPS) and cell-wall LPS of phytopathogenic bacteria have been correlated with pathogenesis its chemical structure and tridimensional conformation may play a role in the early infection process and in the determination of plant-bacteria interaction specificity [92]. The LPS of three strains of P. savastanoi were isolated and the structure of their O-chain portion were determined by chemical and NMR spectral analysis. For all the strains the O-chain consists of a tetrasaccharide repeating unit of three a-L-Rhap and one terminal non-reducing a-D-Fuc-p3NAc. Two rhamnosyl residues are 3-linked and the third one 2,3-linked as reported [93]. 

Bioactive metabolites from phytopathogenic bacteria and plants 581... 

The arrival in Italy of the phytopathogenic bacteria Erwinia amylovora has shown how honey bees, branded as dangerous carriers of the microorganism, may, if wisely exploited, prove to be an excellent tool for detecting the presence of the bacteria in a certain area before the disease has a chance to manifest itself, so that prompt action may be taken to halt its progress. 

Trias, R., Baneras, L., Montesinos, E., Badosa, E. (2008). Lactic acid bacteria from fresh fruit and vegetables as biocontrol agents of phytopathogenic bacteria and fungi. International Microbiology, II, 231—236. 

Bacterial growth susceptibility was determined by the MIC method. Drops of chitin derivatives of different concentrations were applied to the surface of agarose plates containing cultures of bacteria in nutrient dextrose medium or LB medium for phytopathogenic bacteria and E. coli, respectively. MIC was defined as the lowest concentration of chitin derivatives that inhibited bacterial growth after overnight incubation of the agarose plates at 37°C. 

Fernandez de Caleya, R., Gonzalez-Pascual, B., Garcia-Olmedo, F. and Carbonero, R, 1972, Susceptibility of phytopathogenic bacteria to wheat purothionins in vitro, Appl Microbiol, 23 998. 

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