Reference

Resistance to fungicides which inhibit ergosterol biosynthesis in laboratory strains of Botrytis cinerea and Ustilago maydis

Resistance to fungicides which inhibit ergosterol biosynthesis in laboratory strains of Botrytis cinerea and Ustilago maydis. Leroux, Pierre; Gredt, Michel (Stn. Phytopharm., INRA, Versailles 78000, Fr.). Pestic. Sci., 15(1), 85-9 (English) 1984. CODEN: PSSCBG. ISSN: 0031-613X. 60029-23-4 and 63284-71-9 which are cas registry numbers are also used here. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 10 The strains of B. cinerea or U. maydis selected on fenarimol [60168-88-9], triarimol [26766-27-8] or triadimefon [43121-43-3] were also resistant to the other inhibitors of sterol C-14 demethylation; the sterol compn. of the strains was normal. Among the isolates of U. maydis resistant to dodemorph [1593-77-7], fenpropidine [67306-00-7], fenpropemorph [67306-03-0], and tridemorph [81412-43-3], some were resistant to the 15-azasteroid A 25822B [50686-98-1] and did not contain ergosterol [57-87-4]. The other strains remained sensitive to A 25822B and had a normal sterol compn. All the resistant isolates and the wild-type were inhibited to the same extent by nystatin [1400-61-9] and pimaricin [7681-93-8]. .

Influence of choline derivatives on the sterol composition of Chlorella vulgaris grown in continuous culture

Influence of choline derivatives on the sterol composition of Chlorella vulgaris grown in continuous culture. Orcutt, D. M.; Davis, G. A.; Moore, L. D. (Dep. Plant Pathol. Physiol., Virginia Polytech. Inst. and State Univ., Blacksburg, VA 24061, USA). Can. J. Bot., 62(1), 78-80 (English) 1984. CODEN: CJBOAW. ISSN: 0008-4026. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) CCC [999-81-5], (2-hydroxyethyl)trimethylammonium chloride (CC) [67-48-1], and (2-hydroxyethyl)trimethylammonium chloride phosphate (PCC) [107-73-3] decreased ergosterol (I) [57-87-4], as a percentage of total sterol extd. from C. vulgaris cells grown in continuous culture. Each compd. was tested sequentially at 10-6, 10-5, and 10-4 M. The greatest redn. in the relative percentage of I occurred with 10-4M CC. CCC and PCC treatment increased the relative percentage of 22-dihydroergosterol [516-79-0], yet no accumulation of 22-dihydroergosterol was obsd. with the CC treatments. All 3 chems. increased the relative amts. of C27 sterols. Abs. concns. of total sterols were significantly reduced by CC at 10-6 and 10-4 M. 434-16-2 and 516-79-0 are just another two chemicals used in this study. CC, at 10-5 M, significantly increased abs. concns. of total sterols as did PCC at 10-6 and 10-5 M. .