Differential effects of fenpropimorph and fenhexamid, two sterol biosynthesis inhibitor fungicides, on arbuscular mycorrhizal development and sterol metabolism in carrot roots

Two sterol biosynthesis inhibitor fungicides affect differently sterols and arbuscular mycorrhizal (AM) development of carrots roots. Fenhexamid affects the frequency of arbuscules without change in sterol profile, whereas fenpropimorph causes modifications of sterol composition with an apparition of unusual sterols as well as a drastic reduction in the AM fungus.