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Fungicidal activity of the polyamine analogue, keto-putrescine.
- Source :
- Pesticide Science; 1993, Vol. 37 Issue 3, p267-272, 6p
- Publication Year :
- 1993
-
Abstract
- The polyamine analogue, keto-putrescine, was shown to provide substantial control of infections by six economically important plant pathogens, with EC<subscript>50</subscript> values ranging between 57 and 82 mg litre<superscript>−1</superscript>. However, keto-putrescine was relatively less effective in vitro against Phytophthora infestans, Pyricularia oryzae and Pyrenophora avenae, with EC<subscript>50</subscript> values ranging from 145 to 340 mg litre<superscript>−1</superscript>. In contrast, the polyamine analogue N-acetylputrescine had to effect on in-vitro growth of P. avenae or P. oryzae or infection of barley seedlings with powdery mildew. When P. avenae was grown in the presence of keto-putrescine, there were small, insignificant reductions in ornithine decarboxylase activity, with more substantial, significant reductions in S-adenosylmethionine decarboxylase activity. These changes were accompanied by a 43% reduction in spermidine concentration and increased concentrations of spermine and cadaverine. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0031613X
- Volume :
- 37
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Pesticide Science
- Publication Type :
- Academic Journal
- Accession number :
- 91109263
- Full Text :
- https://doi.org/10.1002/ps.2780370306