| Differential effects of fenpropimorph and fenhexamid, two sterol biosynthesis inhibitor fungicides, on arbuscular mycorrhizal development and sterol metabolism in carrot roots. | |
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MedLine Citation:
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PMID: 19007946 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Sterols composition of transformed carrot roots incubated in presence of increasing concentrations of fenpropimorph (0.02; 0.2; 2mgl(-1)) and fenhexamid (0.02; 0.2; 2; 20mgl(-1)), colonized or not by Glomus intraradices was determined. In mycorrhizal roots treated with fenpropimorph, normal Delta(5)-sterols were replaced by unusual compounds such as 9beta,19-cyclopropylsterols (24-methylpollinastanol), Delta(8,14)-sterols (ergosta-8,14-dienol, stigmasta-8,14-dienol), Delta(8)-sterols (Delta(8) sitosterol) and Delta(7)-sterols (ergosta-7,22-dienol). After application of fenpropimorph, a drastic reduction of the mycorrhizal root growth, root colonization and extraradical fungal development was observed. Application of fenhexamid did not modify sterol profiles and the total colonization of roots. But the arbuscule frequency of the fungal partner was significantly affected. Comparison of the effects caused by the tested fungicides indicates that the usual phytosterols may be involved in symbiosis development. Indeed, observed modifications of root sterols composition could explain the high fenpropimorph toxicity to the AM symbiosis. However, the absence of sterolic modifications in the roots treated with fenhexamid could account for its more limited impact on mycorrhization. |
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Authors:
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Estelle Campagnac; Joël Fontaine; Anissa Lounès-Hadj Sahraoui; Frédéric Laruelle; Roger Durand; Anne Grandmougin-Ferjani |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-11-12 |
Journal Detail:
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Title: Phytochemistry Volume: 69 ISSN: 0031-9422 ISO Abbreviation: Phytochemistry Publication Date: 2008 Dec |
Date Detail:
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Created Date: 2008-11-25 Completed Date: 2009-02-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0151434 Medline TA: Phytochemistry Country: United States |
Other Details:
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Languages: eng Pagination: 2912-9 Citation Subset: IM |
Affiliation:
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Université du Littoral Côte d'Opale, Laboratoire de Mycologie Phytopathologie Environnement, Calais, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Amides
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pharmacology* Daucus carota / microbiology Fungal Proteins / genetics, metabolism Fungicides, Industrial / pharmacology Gene Expression Regulation, Fungal / drug effects Morpholines / pharmacology* Mycorrhizae / drug effects*, growth & development, metabolism* Phytosterols / biosynthesis* Plant Roots / metabolism, microbiology |
| Chemical | |
Reg. No./Substance:
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0/Amides; 0/Fungal Proteins; 0/Fungicides, Industrial; 0/Morpholines; 0/Phytosterols; 0/fenhexamid; 67306-03-0/fenpropimorph |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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