1887

Abstract

SUMMARY: 2,2-Dichloro-3,3-dimethyl-cyclopropane carboxylic acid (WL 28325) is a systemic fungicide highly specific for the rice leaf ‘blast’ disease caused by Cav. Antifungal activity of WL 28325 against was dependent on the composition of the growth medium, growth being unaffected in two complex non-defined media but inhibited in a medium of defined composition. The antifungal effects of WL 28325 are probably not related to its activity as a rice ‘blast’ fungicide. Its intrinsic fungitoxicity was low. The ability of various di-chlorocyclopropanes of similar structure to WL 28325 to inhibit growth of did not correlate with their ability to prevent ‘blast’ on rice. Also, despite the high degree of pathogen specificity of WL 28325 as a disease protectant, WL 28325 inhibited the growth of several plant pathogens in culture.

No evidence was obtained to suggest that WL 28325 is converted, after its application to the rice plant, to a derivative of higher intrinsic fungitoxicity. These compounds may act by stimulating the disease-resistance mechanisms of the rice plant.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-88-2-295
1975-06-01
2024-12-08
Loading full text...

Full text loading...

/deliver/fulltext/micro/88/2/mic-88-2-295.html?itemId=/content/journal/micro/10.1099/00221287-88-2-295&mimeType=html&fmt=ahah

References

  1. Arneson P. A., Durbin R. D. 1968; Studies on the mode of action of tomatine as a fungitoxic agent. Plant Physiology 43:683–686
    [Google Scholar]
  2. Langcake P., Beechey R. B., Lindop C. R., Wickins S. G. A., Leworthy D. P., Wiggins D. E., Broughall J. M. 1974; The isolation and properties of Venturicidin A. Biochemical Society Transactions 2:202–205
    [Google Scholar]
  3. Otsuka H., Tamari K., Ogasawara N. 1965; Variability of Piricularia oryzae in culture. In The Rice Blast Disease p. 69 Baltimore, Maryland: The Johns Hopkins Press;
    [Google Scholar]
  4. Perkins D. D. 1962; Preservation of Neurospora stock cultures with anhydrous silica gel. Canadian Journal of Microbiology 8:591–594
    [Google Scholar]
  5. Ragsdale N. N., Sisler H. D. 1970; Metabolic effects related to the fungitoxicity of carboxin. Phytopathology 60:1422–1427
    [Google Scholar]
  6. Reilly J. J., Klarman W. L. 1972; The soybean phytoalexin, hydroxyphaseollin, induced by fungicides. Phytopathology 62:1113–1115
    [Google Scholar]
  7. Richmond D. V., Pring R. J. 1971; The effects of benomyl on the fine structure of Botrytis fabae. . Journal of General Microbiology 66:79–94
    [Google Scholar]
  8. Sijpesteijn A. K. 1969; Mode of action of phenylthiourea, a therapeutic agent for cucumber scab. Journal of the Science of Food and Agriculture 20:403–405
    [Google Scholar]
  9. Sims J. J., Mee H., Erwin D. C. 1969; Methyl-2-benzimidazole carbamate, a fungitoxic compound isolated from cotton plants treated with methyl-1-(butyl carbamoyl)-2-benzimidazole carbamate (benomyl). Phytopathology 59:1775–1776
    [Google Scholar]
  10. Tamari K., Ogasawara N., Kaji J. 1965; Biochemical products of the metabolism of Piricularia oryzae. . In The Rice Blast Disease p. 35 Baltimore, Maryland: The Johns Hopkins Press;
    [Google Scholar]
  11. Vogel H. J. 1956; A convenient medium for Neurospora. . Microbial Genetics Bulletin 13:42–43
    [Google Scholar]
  12. Vonk J. W., Sijpesteijn A. K. 1971; Methyl benzimidazol-2-ylcarbamate, the fungitoxic principle of thiophanate methyl. Pesticide Science 2:160–164
    [Google Scholar]
/content/journal/micro/10.1099/00221287-88-2-295
Loading
/content/journal/micro/10.1099/00221287-88-2-295
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error