期刊
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
卷 67, 期 2, 页码 85-94出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/pest.2000.2485
关键词
fenpropidin; fenpropimorph; fungitoxicity; fungus; Microdochium nivale; piperalin; spiroxamine; sterols; sterol Delta(8) -> Delta(7)-isomerase; tridemorph
Microdochium nivale, a wheat pathogenic filamentous fungus, appeared to be very sensitive in in vivo laboratory assays to fenpropimorph and tridemorph and to a lesser extent to fenpropidin, piperalin, and spiroxamine. It accumulated Delta(8)-sterols when grown in the presence of one of these sterol biosynthesis inhibitors. Thus, in M. nivale, these fungicides seemed to be Very good inhibitors of the sterol Delta(8) --> Delta(7)-isomerase. This hypothesis was then confirmed by sterol Delta(8) --> Delta(7)-isomerase inhibition assays in cell-free enzyme systems. (C) 2000 Academic Press.
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