Conjugated Phenols in the Fusarium Wilt Syndrome

Davis, David W.; Waggoner, Paul E.; Dimond, A. E.

doi:10.1038/172959a0

Cited by 61 publications

(17 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Johnson & Schaal (1952) reported that tyrosinase converts chlorogenic acid to the quinone in damaged potato tissue, and that the latter compound may be important in resistance to Actinomyces scabies. It has also been suggested that a polyphenoloxidase produced by the host may play a part in the resistance of tomato plants to Fusarium oxysporum (Davis, Waggoner & Dimond, 1953).…”

Section: Discussionmentioning

confidence: 99%

Studies of the Significance of Polyphenolic Host Metabolites in the Nutrition of Venturia inaequalis and Venturia pirina

Kirkham

1957

Journal of General Microbiology

View full text Add to dashboard Cite

SUMMARY : Extracts of the polyphenolic fractions of the water-soluble metabolites (that is, the complex mixtures of plant phenols extracted by ethyl acetate) were prepared from apple and pear varieties characterized by different degrees of resistance to the scab pathogens. Qualitative differences were chiefly interspecific and extracts of resistant varieties did not contain major components lacking in those of lessresistant varieties of the same species. Cultural reactions of distinct clones of each pathogen to the extracts, in the presence of various basal media, were observed. Growth and sporulation were inhibited independently by extracts of less-resistant as well as resistant host varieties. The clones were not equally susceptible, those of A study of distinct clones of Venturia inuequalis (Cke.) Wint. and V. pirilna Aderh., the causal fungi of apple and pear scab, respectively (Kirkham, 1957) has shown that interspecific and interclonal differences in pathogenicity and host range are not necessarily associated with corresponding differences in nutritional requirements. Clones of V. inaequalis which were pathogenic on the greatest number of apple varieties were the most stable in artificial culture, but no other indications were obtained of relationships between the reactions of either pathogen in natural and artificial environments. These observations, and the work of Wiltshire (1915), Johnstone (1931) and Rudloff (1934), point to the importance of considering all groups of host metabolites, including the plant phenols, as factors in the metabolism of Venturia species and in the determination of their host relations. Bradfield & Flood (1949) showed that the main qualitative differences between the water-soluble constituents of apple and pear shoots lie in the polyphenolic fractions (that is, the complex mixtures of plant phenols extractable by ethyl acetate). In the present communication polyphenolic fractions of apple and pear varieties characterized by different degrees of resistance are compared, and the results of cultural studies of the possible significance of these and other host metabolites in the, nutrition of the pathogens are given. Some results of this study have already been briefly reported (Kirkham, 1954).

show abstract

Section: Discussionmentioning

confidence: 99%

Studies of the Significance of Polyphenolic Host Metabolites in the Nutrition of Venturia inaequalis and Venturia pirina

Kirkham

1957

Journal of General Microbiology

View full text Add to dashboard Cite

show abstract

“…The effect of Fusarium infections on the phenols content of resistant and susceptible tomato plants has been investigated by different authors with contradictory results (Davis et al, 1953;Rohl"inger et al, 1958;Menon and Schachinger, 1957;de Leo, 1964;van den Briel, 1967). More recently, in plants harvested at different times after inoculation we have observed that an increase in phenols concentration as a response to the infections with Fusarium oxysporum f. sp.…”

mentioning

confidence: 91%

Effect of mixed inoculations with Fusarium oxysporum f. sp. lycopersici and F. oxysporum f. sp. dianthi on the phenols content of tomato plants

Matta

Gentile

Giai

1970

Netherlands Journal of Plant Pathology

View full text Add to dashboard Cite

Forms of Fusarium oxysporum specific on hosts other than tomato induce in this plant greater initial increases of the phenols content than the pathogenic f. sp. lycopersici. Mixed inoculations of f. sp. lycopersici and f. sp. dianthi are on the contrary no more effective in inducing the phenol accumulation 24 h after the infection than f. sp. lycopersici alone. This observation suggests that the pathogen can suppress the phenolic response that is typical of the incompatible combinations.

show abstract

“…A correlation has been shown to exist between the natural phenol level in plants and the degree of disease resistance (Walker and Link, 1935;Lee and Le Tourneau, 1958;Patil et al, 1962). Other research has provided evidence indicating that the production or liberation of phenols by plant tissue after infection is important in disease resistance (Davis et al, 1953;Kuc et al, 1956;Cruickshank and Perrin, 1960;Kiraly and Farkas, 1962). Their part in the host-parasite interaction in Dutch elm disease is unknown.…”

Section: Resistancementioning

confidence: 99%

Electron microscopy of elm infected with Ceratocystis ulmi (Buism) C Moreau

MacDonald

View full text Add to dashboard Cite

Conjugated Phenols in the Fusarium Wilt Syndrome

Cited by 61 publications

References 2 publications

Studies of the Significance of Polyphenolic Host Metabolites in the Nutrition of Venturia inaequalis and Venturia pirina

Studies of the Significance of Polyphenolic Host Metabolites in the Nutrition of Venturia inaequalis and Venturia pirina

Effect of mixed inoculations with Fusarium oxysporum f. sp. lycopersici and F. oxysporum f. sp. dianthi on the phenols content of tomato plants

Electron microscopy of elm infected with Ceratocystis ulmi (Buism) C Moreau

Contact Info

Product

Resources

About