Phytopathogens

Compounds of formula 26,27 (Section II.B) were shown to be effective against phytopathogens (93EUP571326). 

A number of compounds of invention (95EUP658547) include derivatives 116 which have excellent fungicidal activity. They exert excellent preventive effects on various phytopathogenic fungi, which makes them useful as an agricultural/ horticultural fungicides. 

I refer, of course, to the toxins produced by phytopathogenic fungi and bacteria. Considering the widespread damage which they cause, it is remarkable that so little is known about the chemistry of these substances. Perhaps the first toxin to receive detailed chemical examination was lycomarasmin (XIX) (36), an isolate from... 

Zarnowski, R., Kozubek, A., Pietr, S. Effect of rye 5-n-alkylresorcinols on in vitro growth of phytopathogenic Fusarium and Rhizoctonia fungi. Bulletin of the Polish Academy of Sciences, Vol.47, No.2-4, (1999), pp. 231-235, ISSN 0239-7269... 

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. 

Plants are continually exposed to a vast array of potential phytopathogenic fungi nevertheless, plants resist to most of them by blocking fungal development soon after penetration. Resistance against pathogens can be distinguished in resistance at the species level (non-host resistance) and resistance at the cultivar level (race-cultivar resistance). Plants lack a circulatory system and antibodies and have evolved a defense mechanism that is distinct from the vertebrate immune... 

MOLECULAR GENETICS AND REGULATION OF PECTINASE BIOSYNTHESIS IN SAPROPHYTIC AND PHYTOPATHOGENIC MICROBIAL SYSTEMS... 

As a first step in the study of the pectinolytic activity of AzospihUvm irakense (non-phytopathogen), we isolated and partially characterised A. irakeme genes that confer pectinolytic activity to Escherichia coU and Azospirillurn hrasilense... 

Identification of a seventh endo-pectate lyase of the phytopathogenic bacterium Erwinia chrysanthemi... 

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. 

Biocontrol agent Antibiotic compound Phytopathogen Protected host Disease References... 

R. P. Lcite, G. U. Miinsavage, U. Bonas, and R. E. Stall, Detection and identification of phytopathogenic Xanthomonas species by amplification of DNA-.sequences related to the HRP genes of Xanthomonas-campestris pv. vesicatoria. Appl. Environ. Microbiol. 60 1077 (1994),... 

Collection I rancaise des Bacteries Phytopathogenes (CFBP) (in French). 

Mayer R T, Inbar M, McKenzie C L, Shatters R and Borowicz V (2002), Multitrophic interactions of the silverleaf whitefly host plants, competing herbivores, and phytopathogens , Arch Insect Biochem Physiol, 51, 151-169. 

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